Physics

The calculation of kinetic energy uses the formula, KE = 1 2 mv2. Identify the unit that is required for mass and velocity, respectively, to determine the kinetic energy in Joules.

• mass in g, velocity in m s
• mass in kg, velocity in m s
• mass in g, velocity in km hr
• mass in kg, velocity in km hr

When was the International system unit adopted in the Philippines?

• January 1, 1893
• January 1, 1993
• January 1, 1883
• January 1, 1983

What is an energy that can be transferred from one object to another causing a change in temperature

• HEAT

What is the first step in Scientific Method?(Answer should be in ALL CAPITAL LETTERS)

• OBSERVATION

What is defined a region in space chosen for study?

• SURROUNDINGS
• BOUNDARY
• SYSTEM
• VOLUME

Which among the following is a vector quantity?

• Mass
• Displacement
• Temperature
• Density

Which type of electromagnetic radiation has the shortest wavelength?

• Gamma ray
• Radio wave
• X-ray
• Microwave

What is the name of the region where a mass experiences a force?

• Gravitational Field

The change in electric potential energy per unit charge is

• amperes
• current
• gravity
• voltage

The gravitational force between Earth and the Sun is a two-way force. Both the planet and the Sun attract each other. However, Earth revolves around the Sun rather than the Sun revolving around Earth. Which statement BEST explains the orbit of the Earth around the Sun?

• The Sun is at the center of the Solar System.
• The Sun’s mass is much greater than Earth’s.
• Earth rotates about its axis, but the Sun does not.

Gravity is pulling you to the .....................of the Earth

• Center

During nuclear decay, a new isotope is created. How is the nucleus of the new isotope different from the parent if the parent isotope has undergone beta decay?

• the atomic number increases by 4 and the mass increases by 2.
• the atomic number increases by 2 and the mass decreases by 4.
• the atomic number increases by 1 and the mass remains the same.
• the atomic number remains the same and the mass decreases by 1.

Which of the following is the corresponding of the word Physics

• Cell
• Solar system
• Energy
• Zoology

DEGREE CELSIUS IS _______________ UNIT OF TEMPERATURE

• KELVIN
• C.G.S
• S.I

According to Newton’s third law of motion, when a hammer strikes and exerts force on a nail, the nail

• creates a friction with the hammer.
• disappears into the wood.
• exerts an equal and opposite force on the hammer.
• moves at a constant speed.

What is a closed path for electrons to flow through?

• static electricity
• circuit
• amperes

Where a dry cell is used

• Torch
• Bells
• Lamp
• Christmas lights

Weight is measured in.....

• Kilogram
• Newtons
• Kilometer

CLINICAL THERMOMETER IS USED TO MEASURE THE TEMPERATURE OF ______________.

• HUMAN BODY
• TREES
• CHEMICALS
• NONE

black is more likely to ____ light than white

• absorb

One source of sound

• Tuning fork

Which resistor will prevent the most current flow?

• 1000 Ω
• 100 Ω
• 10 Ω
• 1 Ω

Which student correctly identifies a similarity and a difference between vector quantities and scalar quantities?

• Binyam
• Carlita
• Dante

Torque is also called

• Stationary moment
• Moment of force
• Force of moment
• None of these

What is the second step in Scientific Method?(Answer should be in ALL CAPITAL LETTERS)

• QUESTION

Which of these following states in India are vulnerable to cyclones

If a 2 kg mass is 3 m above the ground, and g is 10 N/kg, then what will the gravitational PE be?

• 60 J
• 6 J
• 10 J
• 4 J

The first law of thermodynamics is based on which of the following principles?

• CONSERVATION OF MASS
• ACTION AND REACTION
• CONSERVATION OF ENERGY
• THE ENTROPY-TEMPERATURE RELATIONSHIP

Energy can be created but not destroyed

• TRUE
• FALSE

This type of error is caused by faulty instruments or the correct handling of instruments.

• Systematic error
• Unsystematic error
• Random error
• Organized error

When opening a door, the hardest way is

• Applying the force at the door's part that is closest to the hinges
• Applying the force at the door's middle part a bit far from the hinges
• Applying the force at the door's edge that is far from the hinges
• None of these

Scientists have used the force of gravity knowledge to send

• Aeroplane
• Ship
• Satellites
• Submarine

What is the voltage of a battery that powers a light with 0.43 A and has a resistance of 3.5 ohms?

• 1.505 V
• 3.07 V
• 3.93 V
• 8.13 V

Using your knowledge of the properties of the different states of matter, determine which state of matter would travel the fastest.

• liquid carbon dioxide
• gaseous carbon dioxide
• dry ice – solid carbon dioxide
• none – sound travels at a constant rate

Which has the lower temperature: 0 degrees Celsius or 32 degrees Fahrenheit?

• The same

How is a lady voice different from a man

Mention characteristics of a sound

• Loudness and pitch

Newton's law of gravity was used to predict the existence of the planet

• Saturn
• Pluto
• Neptune

If three resistors are connected in parallel,then effective resistance is ___ μF.Given: C1=5μF; C2=10μF; C3=15μF

• 0.35
• 2.86
• 20.1
• 30.0

What does the term “steady” implies?

• NO CHANGE WITH VOLUME
• NO CHANGE WITH LOCATION
• NO CHANGE WITH MASS
• NO CHANGE WITH TIME

As you tune your radio to a higher frequency, from 88.5 FM to 103.3 FM, the wavelength of the wave that you are tuning in

• increases
• decreases
• stays the same

It is the ability to do work.

• ENERGY

A Newton is equal to which of the following?

• kilogram-meter per second
• meter per second squared
• kilogram-meter per second squared
• kilogram per meter-second

Can energy be wasted?

• Yes
• No

S.I UNIT of heat IS ___________.

• JOULE

When opening a door, the easiest way is

• Applying the force at the door's part that is close to the hinges
• Applying the force at the door's middle part a bit far from the hinges
• Applying the force at the door's edge that is far from the hinges
• None of these

In the color spectrum, ________ has the highest wavelength.

• Infrared

Sound is produced by ______ in a body

• Vibration
• Tunning
• Dancing
• Reading

Which among the following activities is not an example of the third law of motion?

• Running
• Cycling
• Skiing
• Walking on a boat

Pressure can be reduced by increasing the area

• TRUE
• FALSE

m x g = ...

• force

work done = ...

• energy transformed

THE HEAT FLOWS FROM A BODY AT _______ TEMPERATURE TO _________ TEMPERATURE?

• HIGHER , LOWER
• HIGHER , HIGHER
• LOWER , HIGHER
• LOWER , LOWER

1 hp is equivalent to ____.

• 746 watts
• 764 watts
• 756 watts

It is how closed the measured value from the other.

• Accuracy
• Precision
• Random error
• No answer

In the formula C = Q / V, _____ is represented by "Q."

• Capacitance
• Charge
• Quality
• Potential Difference

The forces are considered ___________ when the directions of the forces to which they are applied intersect or meet at a common point.

• Concurrent

Identify the conductor below.

• cloth rag
• plastic bottle
• gold ring

What is the approximate equivalent resistance between points A and D?

• 320 Ω
• 410 Ω
• 1.1 Ω
• 1.8 Ω

Alpha radiation is another type of radiation. Alpha particles consist of two protons and two neutrons bound together into a particle identical to a helium nucleus. They have much less energy than either beta particles of gamma waves. Suppose a Geiger counter was placed 10 cm from an alpha emitter, and clicks were recorded for three minutes. Based on the recorded data, predict the number of clicks you would detect on the far side of the aluminum shield.

• 0 clicks
• 2 clicks
• 5 clicks
• 10 clicks

CONVECTION IS POSSIBLE IN ________

• SOLIDS
• LIQUIDS
• GASES
• LIQUIDS & GASES

The force of Friction does this to objects

• fast
• slow

A quantity which has both magnitude and direction.

• Scalar quantity
• Vector Quantity
• Speed
• Velocity

Torque is also known as the force that causes

• Zero force
• Electrical force
• Gravitational force
• None of these is true.

When and where was the magnet found

• 5000 years ago , in a town magnesia which is in greece
• 500 years go in europe

What happens with an object when it experiences a net torque?

• It is being pushed.
• It is being pulled.
• It is static.
• It is rotating.

Another unit used to measure atmospheric pressure is the “torr”. 1 atm is how many torr?

• 760

HEAT IS TRANSFERRED BY CONDUCTION IN

• SOLIDS
• LIQUIDS
• GASES
• ALL OF THEM

The weight of a person is different on different massive objects e.g. planets

• TRUE
• FALSE

It is the science that deals with the study of matter and energy.

• Physics
• Physical Science
• Chemistry
• Matter and Energy

LABORATORY THERMOMETER range ?

• -1100C TO 100C
• - 100C TO 1100C
• 00C TO 1100C

What does KE stand for?

• Kinetic energy

A battery of 10 volt carries 20,000 C of charge through a resistance of 20 Ω. The work done in 10 seconds is

• 2 × 10 5 Joule
• 2 × 10 3 Joule
• 2 x 10 4 Joule
• 2 x 102 Joule

HEAT IS A ____________ QUANTITY

• SCALER
• VECTOR

What is the vector quantity whose dimensional formula is similar to that of energy?

• Moment of force
• Moment of inertia
• Momentum
• None of these

What is the basic unit of electric current?(Answer should be in ALL CAPITAL LETTERS)

• AMPERE

efficiency = useful power output/ ...

• total power input

What is the equivalent or total resistance (Re) across this circuit?

• 3 kΩ
• 13 kΩ
• 10 kΩ
• 18 kΩ

There is an atmosphere (air) on the Moon.

• True
• False

two vectors in the same line.

• Collinear vector

How much joules is one megajoule?

• 1 000 000
• 100 000
• 100 000 000
• 10 000 000

Which of the following is not associated with cyclones

• strong winds
• heavy rains
• volcanic eruption
• storm

Defined as distance travelled per time

• speed

In the color spectrum, which has the highest frequency?

• red
• violet
• indigo
• blue

The formula for computing power is _____.

• w x t
• w / t
• w + t

Physics derived from the Greek word _____, which means nature or natural things.

• Fusis

A wire of length /, made of material resistivity ρ is cut into two equal parts. The resistivity of the two parts are equal to,

• ρ

_Select the odd one out

• Water
• Torch
• Electromagnet
• Book

TRANSFER OF HEAT DUE TO THE CONVECTION OCCUR IN

• SOLIDS
• LIQUIDS
• GASES
• B AND C

A student who weighs 500 Newtons climbed the stairs from the first floor to the third floor, 15 meters above, in 20 seconds. How much work did she do? What was her power?

• 7500 375

This is the movement of an object that goes back and forth about a central point.

• Uniform Motion
• Vibrational Motion
• Translational Motion
• Circular Motion

What is the fourth step in Scientific Method?(Answer should be in ALL CAPITAL LETTERS)

• EXPERIMENT

This type of error occurs when there are variations in the environment or the measurement technique.

• Systematic error
• Unsystematic error
• Random error
• Organized error

Ohm's law describes the relationship between what?

• Current and velocity
• Current, voltage, and resistance
• Frequency, wavelength, and velocity
• Kinetic energy and momentum

Air exerts ___________ on kite to fly higher

• pressure
• force
• weight
• mass

Why can lights travel in a vacuum but not sound?

• Light waves are dual in nature
• Due to the electromagnetic nature of light waves.
• Due to the electromagnetic nature of sound waves.
• Speed of sound is very slow than light

What is the third step in Scientific Method?(Answer should be in ALL CAPITAL LETTERS)

• HYPOTHESIS

A French engineer in 1824 who made an effort to understand the efficiency of real engines and describe the theoretical engine as the most efficient

• SADI CARNOT

Name the Indian mathematician and astronomer who did observations of the Earth, moon, and forces.

• Bhaskaracharya

A change in position of any body or object with respect to a fixed reference point.

• Motion
• Uniform Motion
• Circular Motion
• Linear Motion

Sound needs a ______ to travel

• Box
• Bottle
• Median
• Medium

The shock you sometimes feel when you touch a metal doorknob on a dry day is electric ________.

• Circuit
• Current
• Discharge
• Resistance

λ is the symbol for _____ in waves

• Wavelength

What do you call on the process for experimentation that is used to explore observations and answer questions?(Answer should be in ALL CAPITAL LETTERS)

• SCIENTIFIC METHOD

The term “thermodynamics” comes from Greek words “therme” and “dynamis” which means ___

• HEAT POWER
• HEAT ENERGY
• HEAT TRANSFER
• NONE OF THESE
• A OR B

to determine the mechanical advantage of a pulley system, you

• count all of the ropes
• you count all of the rope segments but the first
• you count the ropes segments and divide by 2

What is the mass or region outside the system called?

• SURROUNDINGS
• VOLUME
• BOUNDARY
• SYSTEM

Energy is neither ________ or __________ it is _______________.

• created, destroyed, converted

A force is a ____________________

• push or pull
• motion
• speed
• net force

How many colors are there in the spectrum when white light is separated?

• 6
• 7
• 8
• 9

Two devices are connected between two points say A and B in parallel. The physical quantity that will remain the same between the two points is

• Current
• Voltage
• Resistance
• Resistivity

Which mirror(s) create a real image?

• Concave
• Convex
• Plane

Which description best applies to Lenz's Law?

• An induced current occurs when a magnet passes through a tube.
• The direction of an induced current is such to align with the change that created it.
• When a change in magnetic field occurs to a coil the direction of current goes in the in the other direction to this change.
• A magnet is a tube is always slowed by its magnetic field.

Define the term inertia.

• the amount of matter in an object
• the amount of space an object takes up
• the tendency of an object to resist a change in motion, determined by mass
• The force that one surface exerts on another when the two rub against each other

NORMAL TEMPERATURE OF HUMAN BODY IS ?

• 370K
• 370F
• 370C

What does PE stand for?

• gravitational potential energy

750 million years ago, there was enough Uranium-235 present in Oklo, Gabon to have a natural fission reaction occur and generate a chain reaction. If there is currently 50kg of U-235 present in Oklo, how much must have been present 750 million years ago when the reaction took place?

• 50 kg
• 100 kg
• 200 kg
• 375 kg

What is the thermodynamic temperature scale in the SI system?

• KELVIN

Mass is measured in.....

• Kilograms
• Kilometers
• Newtons

What is the amount of current flowing through an electric press, if the amount of charge passing through a conductor in 10 minutes is 300 0 C?

• 30 A
• .3 A
• .5 A
• 5 A

What is considered as the heat content of a system?

• ENTHALPY

The standard metric unit of power is _____.

• Joules
• Newtons
• Watt

What is the function of a capacitor?

• To capacitate
• To consume energy
• To resist current
• To store energy as electric charge

A 16N force is applied to an object and 96J of work is done. How far was the object moved?

• 6 meters
• 16 meters
• 80 meters
• 1536 meters

A system which consists of fixed amount of mass and no mass can cross its boundary called _____.

• CLOSED SYSTEM
• OPEN SYSTEM
• EQUILIBRIUM SYSTEM
• THERMAL EQUILIBRIUM SYSTEM

Who discovered that a moving magnet generates electric current known as electromagnetic induction?

• Benjamin Franklin
• Nikola Tesla
• Michael Faraday
• Wilhelm Rontgen

Which device or devices could be removed without breaking the electric circuit?

• Only the bulb
• Only the switch
• The battery and the switch
• The bulb and the switch

Which statement is true regarding the relationship between distance and displacement?

• Distance and displacement are always equal.
• Distance is always different than displacement.
• Distance is always less than or equal to displacement.
• Distance is always greater than or equal to displacement.

work done = force times ...

• distance

What is the basic unit of mass?(Answer should be in ALL CAPITAL LETTERS)

• KILO GRAM

W = ___

• f x d
• f / t
• f / a
• f x a

Cycles put oil in the axles of their bicycle to reduce friction. This is called

• Condesation
• Friction
• Oil formation
• Lubrication

Describe how resistance affects the flow of current in a circuit.

• Efficiency of a circuit is dependent on decreasing the resistivity of the material.
• Current in the circuit increases with increasing of the innate resistivity of the material.
• Flow of electrons within the wire is increased by reducing the resistance by using a longer wire.
• The flow of current in a circuit is reduced by resistance from collisions of the electrons within the wire.

Speed of sound in air is

• 330m s¹
• 330m s–¹
• 1500m s–¹
• 5960m s–¹

The SI unit for energy and work done is ___

• JOULE

What is a process during which the temperature remains constant?

• ISOBARIC PROCESS
• ISOCHORIC PROCESS
• ISOTHERMAL PROCESS
• ISOMETRIC PROCESS

At what hz bats and dogs an hear the sound

• 50,000hz and 100,000hz

The first law of thermodynamics is also known as ________________.

• Conservation of energy

Ancient people used units of measurement that were based on ______.

• Parts of the Human body
• Size of the old tree
• Size of the long rope
• Days on the calendar

Solve for the total current in the circuit.

• 0.02 A
• 0.09 A
• 9 A
• 50 A

vector quantity is?

• a physical quantity that has both magnitude and direction

Which of these is the unit of torque?

• N
• Nm
• Mn
• Nn

It is something that causes stationary objects to move, change speed or direction of motion of moving bodies. It can also change the size or shape of an object.

• Acceleration
• Magnetism
• Force
• Gravity

A candela is an SI unit for what?

• Radioactivity
• Luminous intensity
• Amount of substance
• Inductance

The size of the force of gravity depends on the following. Choose all correct answer

What is the real or imaginary surface that separates the system from its surroundings?

• DIVISION
• BOUNDARY
• WALL
• INTERFACE

△v→ represents?

• acceleration
• velocity
• change in acceleration
• change in velocity

What is the net force of an object when you combine a force of 10 N north with a force of 5 N south?

• 5 N north

How can we calculate the velocity of a vehicle?

• Divide the travelled distance by the taken time
• Divide the taken time by the travelled distance
• Multiply the travelled distance with the taken time
• Multiply the taken time by the travelled distance

____________ is a combination of vertical and horizontal motions that are completely independent of each other.

• Projectile Motion

All moving objects have .... energy.

• Radiated
• Thermal
• Kinetic
• Elastic potential

A system in which there is a flow of mass is known as _____.

• EQUILIBRIUM SYSTEM
• OPEN SYSTEM
• CLOSED SYSTEM
• ISOLATED SYSTEM

Comparing series vs parallel resistor circuits:

• Series: voltage changes, current is constant
• Parallel: both voltage AND current change
• Series: Current changes, voltage is constant
• Parallel: neither voltage nor current change

The distance from red line to red line is the ...

• wavelength
• amplitude
• crest
• trough

Who was the name 'torque' given by?

• Ancient Africans
• Ancient Romans
• Ancient Greece
• Ancient China

Which is not a type of friction?

• rolling
• static
• sliding
• fluid
• air

The sum of all the microscopic form of energy is called _____.

• INTERNAL ENERGY

It is the gravitational force exerted by the Earth on any object. It is measured in newton (N) because it is a kind of force.

• Weight
• Mass
• Gravity
• Contact force

My mass would change on different planets.

• True
• False

A strachem rubber band and a compressed spring can both have ... energy.

• Elastic Potential
• Gravitational Potential
• Potential
• Kinetic

What is the formula of weight?

• Weight = Mass * Gravitational Field Strength

How many significant figures are in the number 0.00150?

• 2
• 3
• 5
• 6

A solenoid has 1800 turns and an area of 0.10 m2. It is linked by a uniform magnetic field parallel to the axis of solenoid. The flux density of the field is 0.003 T. What is the magnetic flux linkage for the solenoid?

• 0.3 Wb
• 3 x 10−410^{-4}10−4 Wb
• 0.54 Wb
• 540 Wb

Who was the father of modern Physics?(Answer should be in ALL CAPITAL LETTERS)

• GALILEO GALILEI

The layer of air surrounding the earth is called (Its an obvious answer)

• atmosphere

Which among the following is an accurate depiction for the deceleration when a car is travelling in a north direction and produces a deceleration of 80 m/s2 to stop?

• Westwards, 80 m/s2
• Southwards, 80 m/s2
• Eastwards, 80 m/s2
• Northwards, 80 m/s2

___________ is the measureof how much the measured value deviates from the standard or expected value.(Answer should be in ALL CAPITAL LETTERS)

• UNCERTAINTY

As the resistance in a circuit increases, the electric current __________.

• increases
• decreases
• stays the same

if a 4 N force moves an object 3 meters, what will be the work done?

• 16 J
• 7 J
• 8 J
• 12 J

In winters,the temperature of water in the sea is ________________

• the same
• lower
• higher
• none of these

There is a force of gravity on the Moon.

• True
• False

Newton's first law of Motion is

• An object in motion stays in motion, an object at rest stays at rest, unless acted upon by an outside force

The ______________ can also be denoted as the point of origin of the motion of any moving body or object. It can also be pointed in the coordinate system that refers to starting positions of a particle in motion.

• Frame of Reference

A box is pushed across the floor for a distance of 5 meters with a force of 50 Newtons in 5 seconds. How much work and power is done?

• 250 50

How much joules is one kilojoule?

• 100
• 1000
• 10
• 0.1

The energy stored in the fuel is called ... energy

• Chemical
• Potential
• Kinetic
• Nuclear

HEAT IS THE FORM OF

• FORCE
• ENERGY
• MATTER
• MOTION

_Select the correct definition of mass.

• It is the amount of matter in an object.
• It is the force of Earth's gravity on an object.

What is the basic unit of time?(Answer should be in ALL CAPITAL LETTERS)

• SECOND

It is the force between two surfaces in contact. It has a direction opposite to the motion and parallel to the surface.

• Tension
• Magnetic Field
• Friction
• Non-contact Force

_________________ THERMOMETERS RANGE IS 350C TO 420.

• LABORATORY
• MAXIMUM AND MINIMUM
• CLINICAL
• ALL

W = 500 J T = 25 secondsP = ?

• 12500 W
• 20 W
• 525 W

In a parallel circuit, when one light bulb goes out the other light bulbs ___________

• stay lit
• go out
• flash

A quantity which has only magnitude and is completely specified by a number and a unit.

• Vector
• Resultant Force
• Scalar Quantity
• Net Force

Defined as distance with direction.

• Circular Motion
• Speed
• Velocity
• Displacement

Power is _____

• the push or pull of an object
• the application of energy when an object moved
• is the rate of doing work

The point where the whole weight of a certain body can be considered concentrated.

• Point of Equilibrium
• Static Equilibrium
• Center of Gravity
• Net

What is a cyclone called in philippines

• typhoons
• .

LABORATORY THERMOMETER -____________

• LABORATORY PURPOSES
• FOR HUMAN BODY

Who's third law states that every action has an equal and opposite reaction?

• Newton's law of motion

The work done by a friction force is:

• always positive
• always negative
• always zero
• either positive or negative depending upon the situation

This can be found in the middle of a structure of an atom

• Electrons
• Protons
• Neutrons

The type of sound that is greater than 20Hz but lower than 20,000Hz

• Audible sound

what is the formula for finding the final velocity?

• (a)(vi)+t
• (vi)(t)-a
• vi-(a)(t)
• vi+(a)(t)

What is being represented by the formula above?

• Parallel capacitance
• Parallel resistance
• Series resistance
• Series capacitance

A body is said to have the power of 1 Watt if it does work at the rate of ______.

• 1 joule
• 1 joule in 1 second
• 1 second
• 1 radian / second

The highest point of a wave is the ....

• crest
• trough
• amplitude
• wavelength

What is the rate of acceleration of gravity at the Earth's surface?

• 6.7 m/s2
• 7.8 m/s2
• 9.8 m/s2
• 11.2 m/s2

With simple machines, you exchange force for ...

• distance
• energy
• work
• effort

Peanut ran 50 meters in 10 seconds. What was Peanut's average speed?

• 2 m/s
• 5 km/h
• 5 m/s
• 5 m/s North

Scientists never stop asking....

• questions

_____________ is the total distance traveled by an object in the total time of changing position.

• Average Speed

A bridge that is anchored resting on two pillars have

• Equilibrium torque
• Disequilibrium torque
• No torque
• The torque that can break the bridge

There are three ways to give an object a static charge. They are friction, conduction, and induction. Two pieces of cellophane tape are stuck to a lab table. Each piece is quickly ripped off the table. What prediction would you make about what happens when the two pieces of tape are brought near one another?

• Nothing will happen. The tape only sticks when you touch the adhesive.
• The two pieces of tape will repel as both have obtained a static charge.
• The two pieces of tape will attract as both have obtained a static charge.
• The two pieces will cling to each other as a sock clings when it is removed from a clothes dryer.

A physical quantity that has only magnitude

• Scalar

The prefix “iso” used to designate a process means ______

• CANNOT BE INTERCHANGED
• SLIGHT DIFFERENCE
• APPROXIMATE EQUAL
• REMAINS CONSTANT

_Select the correct definition of weight.

• It is the force of gravity acting on the object.
• It is the amount of matter in an object.

Force is measured in ...

• Newtons

Which mirror(s) create virtual image?

the pivot point on a lever is called the ...

• fulcrum
• base
• lever point

Type frequency range for infrasonic sound

• Below 20Hz

THE MATERIALS THAT ALLOW HEAT TO PASS THROUGH THEM EASILY ARE CALLED ____________.

• INSULATORS
• CONDUSTORS

You can reduce friction by doing the following:

• Fabrication
• Lubrication

Consider the free body diagram. If the sum of the tension forces is equal to the force of gravity, which description BEST applies?

My weight would change on different planets.

• True
• False

If you have a 1 milli-farad capacitor and a 10 kilo-ohm resistor is series, what is the time constant?

• 1 second
• 10 seconds
• 100 seconds
• 1000 seconds

If F = force, which equation illustrates the Law of Conservation of Momentum?

• F1 = F2
• F1 = -F2
• -F1 = -F2
• F1 + - F2 = F3

HEAT FROM THE SUN REACHES THE EARTH BY

• CONVECTION
• CONDUCTION
• RADITION

It is a change in magnetic flux which results to the production of current and electromotive force.

• Electromagnetic Induction

Name any main part of electric bell

• A hammer

It is the study of forces due to heat or heat due to forces

• THERMODYNAMICS

S.I UNIT OF TEMPERATURE IS Fahrenheit

• TRUE
• FALSE

What is the SI unit of work?

• Watt
• meters per second
• Joule
• Newton

True or falseIn simple machinesInput work = output work

• true
• false

Describing how far an object from the PoR.

• Position

A 10.0 kilogram mass of iron on earth exerts a downward force of 98 Newtons. On the moon this same 10.0 kilograms of iron is weighed and found to exert a downward force of 16.3 Newtons. How is this possible?The gravity on the moon is one sixth the gravity of Earth.

• The earth is farther away reducing the pull.
• Weight is the same everywhere, but mass changes.
• Mass begins to evaporate in the vacuum of space.
• The gravity on the moon is one sixth the gravity of Earth.

It is advisable to exceed the maximum holding value marked on the capacitor to keep it working.

• True
• False

Sound travels faster in metals because they are more "stronger" than rubber bands.

• True
• False

Thicker wires have _______ resistance than thinner wires.

• more
• less
• the same

Most radiation is released as particles. Identify the type radiation that is not a particle.

• alpha
• beta
• gamma
• positron

In the wave spectrum, _____ has the highest frequency?

• Gamma Ray

Engines use ... energy to run.

• Thermal
• Kinetic
• Hydro
• Fuel

It is _________ to ride a bicycle in the direction of wind.

• easy
• difficult
• very difficult
• very easy

The calculation of kinetic energy uses the formula, KE = ½ mv2. Identify the unit that is required for mass and velocity, respectively, to determine the kinetic energy in Joules

• Mass in g, velocity in m/s
• Mass in kg, velocity in s
• Mass in kg, velocity in m/s
• Mass in g, velocity in s

Can we hear our friend on moon if we are not wearing any equipments

F = __

• m / a
• m x a
• m x d
• m / d

Change in velocity over time

• Acceleration

It is a branch of physics dealing with the behaviour of bodies that are at rest, or moving at a constant velocity under the influence of two or more forces.

• Combining Forces
• Net
• Net Force
• Statics

Whenever an object moves, work is done.

• TRUE
• FALSE

A 0.5kg ball of clay originally moving at 6 m/s strikes a wall and comes to rest in 0.25s, what is the magnitude of the impulse given to the ball of clay?

• 0.75 kg m/s
• 1.5 kg m/s
• 3.0 kg m/s
• 12 kg m/s

THE DEGREE OF HOTNESS OR COLDNESS OF A BODY IS CALLED

• TEMPERATURE
• KELVIN
• THERMOMETER

You are sitting in a car that isn't moving; suddenly, the car quickly accelerates. Your body seems to be pushed back against the seat. Which word best explains why your body seemed to be pushed backward against the seat?

• newton
• vector
• inertia
• gravity

parallel waves

• Longitudinal wave

While texting his girlfriend that he was running late for their date, Jordan rear-ended a car stopped at a red light. Since this was clearly an inelastic collision, some of his car's kinetic energy was transformed to other types of energy. What types of energy are most likely to result from such a collision?

• Thermal and potential
• Thermal and mechanical
• Chemical and potential
• Mechanical and chemical

In this process, every state along the path is an equilibrium state, so the system can return to its initial conditions by going along the same path in the reverse direction

• REVERSIBLE

________ IS USED AS A THERMOMETER FLUID

• HYDROGEN
• HELIUM
• MERCURY
• OXYGEN

What generates the magnetic field that surrounds a wire carrying an electric current?

• Compasses placed near a long straight current-carrying wire indicate that field lines form circular loops centered on the wire.
• Compasses placed near a short straight current-carrying wire indicate that field lines form circular loops centered on the wire.
• Compasses placed near a short curved current-carrying wire indicate that field lines form circular loops centered on the wire.
• Compasses placed near a long straight current-carrying wire indicate that electric current form circular loops centered on the wire.

which of these are related to storms ( pick more than one answers)

In this ticker tape diagram, which one represents an accelerating speed to the left?

• 3
• 2
• 1
• 4

Rube Goldberg was an engineer and cartoonist who created drawings of machines that completed a ______ task in a ___________ manner.

• hard, easy
• simple, complex
• simple, easy
• hard, complex

A horse performs 15000 joules of work pulling a wagon for 20 seconds. What is the horse's power?

• 300 000 W
• 750 W
• 15020 W

It is more difficult to walk on a sandy road than on a concrete road because ____________.

• Sand is soft and concreter is hard
• The friction between sand and feet is more than that between concrete and feet
• The friction between sand and feet is less than that between concrete and feet
• The sand is grainy but concrete is smooth

Vectors having rotational effect

• Axial vector

What is the law of conservation of energy?

• Energy cannot be made or destroyed, but it can change from one form to another.
• Every action has an equal and opposite reaction.
• If a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.

Mutt and Jeff are running along a path each pushing a cart loaded with rocks. If Mutt's wagon has a mass two times greater than Jeff's and they want to stay together, arriving at their destination at the same time, what must happen?

• Jeff should slow down, so Mutt can catch up.
• Mutt must use half as much force to push his car.
• Mutt must use twice as much force to push his cart.
• Mutt and Jeff will use the same force, but Mutt will take bigger steps.

Can energy be destroyed?

• Yes
• No

v→ is the symbol for

• speed
• Velocity
• Acceleration
• Position

The _____________ states that if a body is at rest, it will continue to remain at rest or will keep moving if it is moving unless acted upon by a force.

• Law of Inertia

It is known as the insulating layer of the capacitor.

• dielectric

It is the pressure exerted by the air in the earth's atmosphere

• ATMOSPHERIC PRESSURE

Magenta and cyan makes?

• Blue
• Green
• Red

Which type of circuit only has one path?

• series
• parallel
• combination

It is the amount of force acting perpendicularly on a unit area

• PRESSURE

What is the gravitational field strength of Earth?

• 10

The force that one surface exerts on another when the two rub against each other is called a.c.b..d..

• friction.
• inertia.
• acceleration
• gravity

_Select the odd one

• trade winds
• cyclone
• westerlies
• polar winds

A magnet is strongest at the

• poles

______________ ENERGY IS CALLED AS THERMAL ENERGY

• HEAT

The central calm area of a cyclone is the

• eye
• hurricane
• core
• corona

A stone is thrown upwards, at its highest point what energy does it have?

• Potential
• Kinetic
• Gravitational
• Chemical

It is how closed the measured value to the actual true value.

• Accuracy
• Precision
• Random error
• Systematic error

TEMPERATURE IS MEASURED BY A DIVICE CALLED ___________.

• THERMOMETRE
• THERMOMETER
• THRMOMETER

Which of these defines torque the best?

• "Force exerted on an object TIMES the distance of the lever arm (away from the center)."
• "Force exerted on an object TIMES the distance of the motion."
• Both A & B
• None of these