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Physics > Multiple Choice > Flashcards

Multiple Choice Flashcards

0
Q

A golf ball is struck by a golf club on the green, 3m above the tree. Where is the gravitational potential energy the greatest?

a) Just before the ball is struck
b) Just after the ball is struck
c) When it lands on the green
d) At huge highest point in its flight

A

d) At the highest point in its flight

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1
Q

The application of _____ ______ explains the visual effects of soap bubbles and gasoline spills on water

A

Thin films

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3
Q

Momentum of an object is independent of its:

a) inertial
b) mass
c) speed
d) Acceleration

A

d) inertia

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4
Q

Which situation does NOT represent zero work being done?

a) A women pushing a cart in a complete circle
b) A ball being swung around the end of a string
c) Carrying a jug of water forward at a constant velocity
d) Lifting a 145lb barbell up above your head

A

d) Lifting a 145lb barbell above your head

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5
Q

Hooke found that the relationship between force and extension of a spring is:

a) Exponential
b) Root
c) Linear
d) Inverse

A

c) Linear

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6
Q

If two 1.52kg cantaloupes are 45cm apart, how much gravitational potential energy is between them?

a) 6.7 J
b) 3.4 x 10^-10 J
c) 2.3 x 10^-10 J
d) 3.4 x 10^-12 J

A

b) 3.4 x 10^-10 J

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8
Q

TRUE OR FALSE

Light can travel through a vacuum

A

TRUE

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9
Q

TRUE OR FALSE

A photon of light with wavelength 450nm has a frequency of 2/3 x 10^14 Hz

A

FALSE

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11
Q

Momentum is expressed in the following units:

a) kg/m
b) g/s
c) (kg m s)/s^2
d) kg/(m s)

A

c) (kg m s)/s^2

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12
Q

TRUE OR FALSE

At a constant speed, the wavelength of a wave is directly proportional to its frequency

A

FALSE

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14
Q

Two oppositely charged parallel plates are separated by 12mm. An electric field between them has strength of 3.0 x 10^3 N/C. An electron moves from the negative plate to the positive plate. The kinetic energy of the electron when it reaches the positive plate is:

a) 5.76 x 10^-18 J
b) 1.4 x 10^-18 J
c) 2.9 x 10^-18 J
d) 0 J

A

a) 5.76 x 10^-18 J

E-W=E`
mgh - Eqd = Ek

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15
Q

As we move farther from a planet, the escape velocity will decrease because:

a) The strength of the planet’s gravity decreases
b) The gravity from other objects pulls harder
c) A rockets engines work more efficiently at high altitudes
d) Disco Lights provide extra propulsion

A

a) The strength of the planet’s gravity decreases

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16
Q

TRUE OR FALSE

Two rays of light from the same source interfere destructively, if their path lengths have a difference of 3.5λ

A

TRUE

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20
Q

A charged sphere hangs (to the right of vertical) in an electric field. You can conclude that:

a) The electric field points right
b) The electric field is zero
c) The electric field points left
d) The net force on the sphere is zero

A

d) The net force on the sphere is zero

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21
Q

TRUE OR FALSE

All waves have the same properties as electromagnetic waves

A

FALSE

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22
Q

An electron moves perpendicularly in a magnetic field of 0.20T [down] at a velocity of 5.0 x 10^5 m/s [left]. The electron will experience the following force:

a) 1.6 x 10^-14 J [out of page]
b) 1.6 x 10^-14 J [left]
c) 1.6 x 10^-14 [into page]
d) 1.6 x 10^-14 [right]

A

a) 1.6 x 10^-14 J [out of page]

F=qvB

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23
Q

In general, for 1-D Inelastic collision:

a) The velocity of the final object is greater than the velocity of the fastest initial object
b) The velocity of the final object is slower than the velocity of the fastest initial object
c) The velocity of the final object is the sum of the velocities of the two initial velocities
d) The velocity of the final object is the difference of the velocities of the two initial objects

A

c) The velocity of the final object is the sum of the velocities of the two initial objects

24
Q

Red light is seen on a section of a soap bubble. Please choose a possible thickness of the bubble:

a) 350nm
b) 700nm
c) 175nm
d) None of the above

A

c) 175nm

25
Q

Electric force is proportional to:

a) The product of k and separation distance
b) The square of the separation distance
c) The product of the two particle’s charges
d) None of the above

A

c) The product of the two particle’s charges

27
Q

TRUE OR FALSE

Another name for a fringe is an antinode

A

TRUE

28
Q

Gravitational and electric forces are governed by a(n) _______ law with respect to separation distance

a) Square
b) Inverse Square
c) Linear
d) Inverse

A

b) Inverse Square

30
Q

Light is defined as what type of wave?

a) Transverse
b) Longitudinal
c) Torsional
d) Electronmagnetic

A

Electromagnetic wave

31
Q

What are the two components that make up a light wave

A

Magnetic and an Electric component

32
Q

Knowing all types of radiation along the electromagnetic spectrum, only two types of radiation are able to pass through Earth’s atmosphere, visible light and what type of wave?

A

Ultraviolet waves

33
Q

Mosquitoes can see visible light and ______________

A

Infrared

34
Q

On the electromagnetic spectrum, this type of radiation has a smaller wavelength than ultraviolet:

a) Microwaves
b) X-Rays
c) Visible Light
d) Radio

A

b) X-Rays

35
Q

The scientist that first predicted that light was a particle was:

a) Galileo
b) Newton
c) Huygens
d) Einstein

A

b) Newton

36
Q

This type of radiation activates vitamin D synthesis in our skin:

a) Microwaves
b) X-rays
c) Ultraviolet
d) Gamma Rays

A

c) Ultraviolet

37
Q

When a wave of amplitude -3 interferes with a wave of amplitude of 5, the resultant amplitude will be:

a) 8
b) -8
c) 2
d) -2

A

c) 2

38
Q

In a Young’s double slit experiment, the wavelength of light being used is halved and the distance between the slits is doubled. The separation of the fringes is:

a) unchanged
b) zero
c) increased
d) decreased

A

d) decreased

39
Q

Red light differs from blue light in its:

a) speed
b) intensity
c) amplitude
d) frequency

A

d) frequency

40
Q

When two polarized films are set at right angles relative to each other:

a) all light is allowed to pass through
b) some light is allowed to pass through
c) no light is allowed to pass through
d) None of the above

A

c) No light is allowed to pass through

41
Q

In a Young’s double slit experiment, the second node on either side of the central bright fringe is on a 5.1 angle. Determine the ratio of the slit separation to the wavelength of the light:

a) 0.06
b) 16.9
c) 0.13
d) 19.4

A

b) 16.9

42
Q

____________ predicted that light was a wave-particle which he called a photon. He performed the _____________ effect experiment to show light’s particle properties

A

Einstein

Photoelectric

43
Q

If an electron is fired directly away from a positively charged plate:

a) Its kinetic energy will decrease
b) Its potential energy will increase
c) Its potential Energy will always equal zero
d) None of the above

A

a) Its kinetic energy will decrease

44
Q

TRUE OR FALSE
If a Young’s double slit apparatus, having operated in air, were to be submerged in water, the fringe pattern would become less spread out

A

TRUE

45
Q

A charged particle in a magnetic field will experience a force perpendicular to:

a) Its velocity and the current in a nearby wire
b) Its velocity and the direction of the magnetic field
c) Its velocity and the direction it is travelling
d) It will not experience a force

A

b) Its velocity and the direction of the magnetic field

46
Q

A 72kg girl is on a skateboard doubles her kinetic energy coasting down hill:

a) Momentum is conserved
b) Her momentum does not change
c) The momentum will also double
d) None of the above

A

d) None of the above

47
Q

What is the property of a wave that allows it to bend around corners?

A

Diffraction

49
Q

TRUE OR FALSE:

When a student sends a positive pulse towards the fixed-end of a spring, the reflected pulse returns in a positive pulse

A

FALSE

50
Q

In a 1-D elastic collision, when the masses of the two objects are equal:

a) The initial velocity of object 1 equals the final velocity of object 1
b) The initial velocity of object 1 equals the final velocity of object 2
c) The final velocities of each object are independent of the initial velocities
d) There will be no change in velocities since the masses are equal

A

b) The initial velocity of object 1 equals the final velocity of object 2

52
Q

An electron experiences a force of 1.6 x 10^-16 N [Left] from an electric field. The electric field is:

a) 1.6 x 10^3 N/C
b) 1.0 x 10^3 N/C [right]
c) 1.0 x 10^3 N/C [left]
d) 1.6 x 10^3 N/C [right]

A

b) 1.0 x 10^3 N/C [right]

Fe=Eq

Physics (4 decks)

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