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Physics > Regents > Flashcards

Regents Flashcards

1
Q

which pair of quantities represent scalar (direction doesn’t matter) quantities?

A

energy and time

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2
Q

which pair of quantities represent vector (direction does matter) quantities?

A

displacement and velocity

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3
Q

A ball is thrown straight up from the surface of Earth. Which statement best describes the ball’s velocity and acceleration at the top of it’s flight?

A

Velocity is 0

Acceleration is nonzero (9.8)

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4
Q

A student runs a plastic comb through her hair, the comb acquires a negative charge. This charge results from the transfer of

A

electrons from the hair to the comb

protons never move

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5
Q

How would the mass and the weight on the moon compare to the mass and the weight on Earth

A

Mass would be the same but weight would be different

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6
Q

AN object is moving w/ constant speed in a circular path. The object’s centripetal accelerations remains constant in

A

Magnitude, only

Magnitude means speed

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7
Q

when pulling a string diagonally - which way is it actually being exerted?
what mode does calculator have to be in?

A

horizontal = cos

degree

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8
Q

Tip: Don’t assume that every # given

A

is needed

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9
Q

As a student walks down hill at constant speed, his gravitation potential energy

A

decreases and kinetic energy remains the same

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10
Q

Resistance is proportionate to ______

Halving the _____ Halves the Resistance

A

Length

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11
Q

In an opening electrical circuit, the source of potential difference is

A

battery

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12
Q

which way do the North Side arrows point

South

A

1) OUt

2) IN

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13
Q

A student claps his hands once to produce a sudden loud sound that travels through the air.
This sound is classified as a

A

longitudinal mechanical wave

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14
Q

A STUDENT GENERATES WATER WAVES IN A POOL of water.

In order to increase the energy carried by the waves, the student should generate waves w/

A

greater amplitude

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15
Q

As frequency increases what will decrease

A

wavelength

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16
Q

angle of reflection or reaction I always respect to what

A

normal line

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17
Q

what characteristic of the wave can not change as the wave enters the second medium

A

frequency

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18
Q

the Doppler effect is best described as the

A

shift in the observed frequency and wavelength of a wave caused by the relative motion btwn the wave’s source and an observer

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19
Q

if there is a picture of a rod what is the dotted line

A

reflection

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20
Q

which type of forces exist btwn the two protons in a helium nucleus
What’s repulsive
What’s attractive

A

repulsive electrostatic force

and attractive strong nuclear force

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21
Q

if it mentions benson or other weird words where to look (most likely)

A

classification of matter

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22
Q

if it asks about an excited mercury of hydrogen number in the energy level (any letter)
where to look

A

energy level diagrams

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23
Q

electron =

A

negative

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24
Q

internal energy

A

friction

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25
Q

charged objects can

A

attract and repel neutral objects

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26
Q

microwaves can have a wavelength closet to

A

length of a physics students thumb

27
Q

which combo correctly Pais a vector quantity with its corresponding unit

A

vector - m/s

28
Q

how does inertia change

A

all based on mass
more mass = more inertia
less mass = less inertia

29
Q

which change would have resulted in a greater time of flight for the projectile

A

increasing the height to 2h

30
Q

mg cos =

A

push you into hill

31
Q

mg sin =

A

dragging u down the hill

32
Q

as a toy car moved in a clock wise horizontal circular path at a constant speed where is acceleration and velocity (which way are arrows pointing)

A 
V = up
A = towards center
33
Q

which forces can either be attractive or repulsive

A

magnetic and electrostatic

34
Q

longer wire =

thinner wire=

A

More resistance

Less

35
Q

work per unit charge required to move a charge btwn two points in an electric circuit defines electric

A

potential diff

36
Q

a light wave can travel through

A

both water and vacuum

37
Q

resonance

A

two or more things that work simetanuosly to produce max sound

38
Q

which characteristics of a light wave remain constant when the light waves travels from air into corn oil

A

period and frequency

39
Q

the spreading out of a wave after passing through an opening in a barrier is an ex of

A

diffraction

40
Q

after two light waves have interfered in a vacuum the two waves will be

A

changed in amp

41
Q

out of phase

A

not in sync

42
Q

A unit used for a vector quantity is

A

Newton

43
Q

If an object is in equilibrium

Acceleration always has to be

A

Zero

44
Q

Which statement describes the gravitation force and the electrostatic force between two charged particles

A

The gravitation force MUST be attractive

Whereas the electrostatic force may be either attractive or repulsive

45
Q 
An electrostatic force exists between two
\+3.20x10^-19 coulomb point charges
separated by a distance of .03 meter
As the distance between the two point
charges is decreased, the electrostatic
force of
A

Repulsion between the two charges

increases

46
Q

Frequency is

A

WAVES/SECONDS

47
Q

If a metal conducts better electricity than what must the resistance be

A

Less

48
Q

When only one lightbulb blows out, an entire string of decorative lights goes out. The lights in this string must be connected in

A

Series with one current pathway

49
Q

When a wave travels through a medium, the wave transfers

A

Only energy

50
Q

Glass may shatter when exposed to sound of a particular frequency.
This phenomenon is an ex of

A

Resonance

51
Q

Which waves require a material medium for transmission

A

Sound waves = air

52
Q

What will charges objects produce

A

Electric and magnetic fields

53
Q

When an isolated conductor is placed in the vicinity of a positive charge, the conductor is attracted to the charge. The charge of the conductor

A

Could be neutral or negative

54
Q

When the sound is coming to you

What happens to the frequency and wave length

A

Higher frequency

Shorter wavelength

55
Q

How many quarks do protons and neutrons have

A

3 quarks

56
Q

Charge of porton
Electron
Neutron

A

+1
-1
0

57
Q

What fundamental interaction is responsible for binding together the protons and neutrons in a helium nucleus

A

Strong nuclear force

58
Q

Why the lightning strike is seen b4 thunder is heard

A

Light travels faster than sound

59
Q

If another resistors would be added in a parallel circuit

What would happen to the current through the first resistor

A

Stay the same

60
Q

How to measure with protractor

A

Center protractor

And subtract what you have with 90

61
Q

How many ft in 1 meter

A

3 feet

62
Q

What does 180° rep

What happens if one is going west but presses the brakes

A

It means opposite

The direction will become east because brakes act in opposition

63
Q

Units for impulse

A

N/S

Physics (7 decks)

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