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Newton's & Coulomb's

Total questions: 51

Worksheet time: 52mins

Name
Class
Date
1.
What states that "every object in the universe attracts every other object"?
a)
Law of Universal Gravitation
b)
Newton's First Law of Motion
c)
My mother
d)
Inertia & gravity
2.
Which of the following is Newton's Law on Gravitation?
a)
F=Gm1m2/r
b)
F = Gm1m2/r2
c)
F = Gm1m2/2r
d)
F = m1m2/2r
3.

Two factors affecting the magnitude of the force of gravity between 2 objects are...

a)
mass and distance 
b)
mass and matter
c)
distance and weight 
d)
weight and mass
4.
Force of gravity is directly proportional to
a)
Mass
b)
Weight
c)
Distance
d)
Time
5.
If I double the distance between two objects, what happens to their gravitational Force?
a)
4x bigger
b)
4x smaller
c)
2x bigger
d)
2x smaller
6.
If I double the mass of one object, but don't change anything else... WHat happens to the gravitational force between two objects?
a)
Doubles
b)
Quadruples
c)
Cut in Half
d)
4x Smaller
7.
What happens to Gravitational force if I double both of the masses but don't change their distance?
a)
doubles
b)
half as big
c)
4x bigger
d)
4x smaller
8.
The law of universal gravitation is credited to whom?
a)
Einstein
b)
Galileo
c)
Darwin
d)
Newton
9.
Gravity attracts all objects towards one another.
a)
False
b)
True
c)
It depends
10.
Complete the following statement: The farther away two planets are the _______ the gravitational force between them.
a)
more
b)
same
c)
dosen't matter
d)
less
11.

How is the gravitational force between to objects related to their mass

a)

They are directly proportional

b)

They are inversely proportional

c)

They do not affect each other

d)

They are equal

12.

If the distance between 2 masses is increased then the force of gravitation between them will...

a)

increase

b)

decrease

c)

stay the same

13.

If the mass of either m1 or m2 is increased then the force of gravitation between them will...

a)

increase

b)

decrease

c)

stay the same

14.

Which of the following formulas is the correct equation for the law of Universal gravitation?

a)

F=GM1M2d2F=\frac{GM_1M_2}{d^2}

b)

F=mgF=mg

c)

F=Gd2m1m2F=\frac{Gd^2}{m_1m_2}

d)

F= F=KQ1Q2d2F=\frac{KQ_1Q_2}{d^2}

15.

The reason why ocean tides happen is

a)

Electrical forces between the sun and the moon

b)

gravitational forces between the Earth and the moon.

c)

Magnetic forces between the Earth and the moon

d)

Motion of the moon around the earth

16.

At what point is the force of gravity on an object greatest

a)

At the center of the earth (Core of the earth)

b)

At twice the distance from the surface of the earth

c)

At the surface of the earth

d)

The force of gravity ios the same irrespective of distance from the center of the earth

17.

why does a bungee jumper feel weightless on their way down?

a)

Because of Lack of support force as they fall

b)

because they are really weightless

c)

because their mass is negligible as they fall

d)

because they are falling at constant velocity

18.

Centripetal force, created by swinging something in a circle, acts in a direction--

a)

along the path of motion

b)

away from the center of the circle

c)

toward the center of the circle

d)

tangent to the circle

19.

What did Newton say about the gravitational force between distant objects?

a)

It is independent of distance

b)

It is inversely related to distance squared

c)

It is proportional to distance squared

d)

It is inversely related to mass squared

e)

It is zero, unless the objects are touching

20.

Earth pulls satellite, and satellite pulls Earth. Which of the forces is stronger?

a)

Earth pulling satellite

b)

Satellite pulling Earth

c)

Both the same

d)

Not enough information to determine

21.

Observers using different ___________________ may measure different velocities for an object in motion

a)

frame of reference

b)

relatives of motion

c)

projectile motions

d)

constant velocity

22.
The amount of matter in an object
a)
mass
b)
weight
c)
inertia
d)
gravity
23.
The moon and other satellites rotate around the earth. Identify the force that keeps these satellites in orbit.
a)
gravity
b)
friction
c)
a strong force
d)
electromagnetic force
24.
If each of the charges doubles, what happens to the force?
a)
Quadruples
b)
Doubles
c)
Stays the same
d)
Reduced by half
25.
If the distance doubles, what happens to the force?
a)
Reduced by half
b)
Reduced by 1/4
c)
Stays the same
d)
Quadruples
26.
If the distance is reduced by half, what happens to the force?
a)
Quadruples
b)
Doubles
c)
Triples
d)
Reduces by half
27.
The Electric Force is strongest when charges are...
a)
close together
b)
far apart
c)
the electric force is constant everywhere
28.

Coulomb's law says that the force between any two charges depends

a)

directly on the size of the charges

b)

inversely on the square of the distance between the charges

c)

both are correct

29.

According to Coulomb's Law, when the distance increases, the electrostatic force ____________.

a)

increases

b)

decreases

c)

remains unchanged

d)

has no relationship to distance

30.

The Coulomb is the unit for:

a)

Charge

b)

Force

c)

Distance

d)

Mass

31.

What happens to the force between two charged objects when you double the distance between them?

a)

it doubles

b)

it is cut in half

c)

it quadruples

d)

it is cut by 1/4

32.

What is the unit for electrostatic charge?

a)

Coulombs

b)

Newtons

c)

Meters

d)

Joules

33.

Coulomb’s law states that the force between two charged objects will __________ when the magnitude (value) of the object’s charge increases.

a)

increase

b)

decrease

c)

stay the same

d)

first increase, then decrease

34.

The variable "r" in Coulomb's Law would have what units?

a)

Joules

b)

Coulombs

c)

Newtons

d)

Meters

35.

Which is the value of the constant in Coulomb's equation?

a)

ke = 9·10-9

b)

ke = 9.8

c)

ke = 6.67·10-11

d)

ke = 9 ·109

36.

What does "r" measure?

a)

the distance between the two charged objects

b)

the amount of charge carried by the objects

c)

the amount of force between two charged objects

d)

the constant value for forces between the objects

37.

What does Fe stand for?

a)

the electrostatic force

b)

the symbol for iron

c)

the constant for the charges

d)

the charges of the particles

38.

What will be the units of F (or Fe)?

a)

Newtons

b)

Meters

c)

Coulombs

d)

Joules

39.

As the value of r increases, what happens to the value of F?

a)

F increases

b)

F decreases

c)

F never changes, q does

d)

Cannot know from the information

40.

What does q measure?

a)

the distance between the two charged objects

b)

the amount of charge carried by the object

c)

the amount of force between two charged objects

41.

Why are there two q's in the equation?

a)

because there are two charged objects

b)

because there are protons and electrons

c)

because the particles are moving away from each other

d)

because the particles are moving towards each other

42.

What can you do to increase the value of k?

a)

change the force

b)

change the distance

c)

change the charge

d)

nothing can be done to change the value of k; it is a constant

43.

An attractive force exists between which two particles?

a)

Two neutrons

b)

An electron and a neutron

c)

An electron and a proton

d)

Two electrons

44.

Coulomb's Law is __________ proportional.

a)

directly

b)

inversely

c)

polymetrically

d)

exponentially

45.

Which setup of charged particles shown below has the two exert the most force on one another?

a)
b)
c)
d)
46.

Since Coulomb's Law is written as

Fe=k⋅q1⋅q2d2F_e=k\cdot\frac{q_1\cdot q_2}{d^2}   this means that as the distance between the two charged objects gets smaller, the electric force ---.

a)

gets weaker

b)

gets stronger

c)

changes unpredictably

d)

does not change

47.

One key difference between the way that Newton's Law of Universal Gravitation says gravity behaves and the way Coulomb's Law says the electric force behaves is ---.

a)

there are two types of electric charge that can neutralize each other, but only one type of mass

b)

the electric force depends on the distance between charges but the gravity force does not depend on the distance between masses

c)

gravity can both attract and repel, but electric force can only attract

d)

gravitational force can act over long distances, but electric force only acts over short (subatomic) distances

48.

What direction will the charge in the middle move?

a)

to the right

b)

to the left

c)

stay still

d)

cannot be determined

49.
When distance increases, electrostatic force ____________; we call this relationship ____________ proportional
a)
decreases;directly
b)
decreases;inversely
c)
increases;inversely
d)
increases;directly
50.

Which of the following charges will attract each other?

a)

-4 μC & -5 μC

b)

4 μC & 5 μC

c)

4 C & 5 C

d)

-4 μC & 5 μC

51.

Select Multiple Answers.


A negative force between two charges mean they:

a)

Attract

b)

Repel

c)

Are the same sign

d)

Are opposite signs

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