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WorksheetsCoulomb's and Gravity Comparison
Total questions: 55
Worksheet time: 3hrs 59mins
The graph shows the relationship between the force of interaction and the magnitude of charge. What type of relationship is this?
Direct
Indirect
Inverse
Reverse
Which two particles are attracted to each other?
Two neutrons
A proton and an electron
Two protons
An electron and a neutron
A repulsive force exists between which two particles?
Two neutrons
An electron and a neutron
An electron and a proton
Two protons
Electrical forces are stronger than gravitational forces.
True
False
Coulomb's law says that the force between any two charges depends
directly on the size of the charges
inversely on the square of the distance between the charges
both are correct
Which is the value of the constant in Coulomb's equation?
k = 9·10-9
k = 9.8
k = 6.67·10-11
k = 9 ·109
What is the name of a body or object that orbits a larger body?
moon
comet
asteroid
satellite
If I double the mass of one object, but don't change anything else... What happens to the gravitational force between two objects?
Doubles
Quadruples
Cut in Half
4x Smaller
What happens to Gravitational force if I triple both of the masses but don't change their distance?
triples
a third as big
9x bigger
9x smaller
What happens to Gravitational force if I triple one of the masses and quadruple the other but keep them at the same distance?
7x bigger
12x bigger
81x bigger
Two asteroids exert a gravitational force, F, on each other. Some time later, the asteroids are now 9 times as far from each other as before. Which of the following represents the gravitational force at this distance?
F/3
F/9
F/81
F/4.5
Two objects are attracted to each other with 125 N of gravitational force.
What would the force between them be if the distance between them were 5x bigger?
5 N
25 N
100 N
3125 N
Two objects are attracted to each other with 1000 N of gravitational force.
Assume one of the masses is replaced with one 4x smaller and the distance between the masses is 10x smaller. What is the new gravitational force?
2,500 N
25,000 N
2.5 N
6,250 N
Planet Z has about 500 times the mass of Earth and about 15 times Earth's radius. Estimate the size of g on the surface of Planet Z.
2.22 m/s^2
21.56 m/s^2
33.33 m/s^2
45.27
If somehow Earth started to shrink in size but kept the same mass, would would happen to the value of g on Earth's surface?
increase
decrease
of F?
Compared to the Gravitational constant G, coulombs constant k is ___________
much larger
much smaller
the same
better
Which diagram best shows the gravitational interaction between Earth and a satellite?
What is the SI unit of universal gravitational constant?
N m²/kg²
N m²/kg
N m/kg²
Newton
The space shuttle is orbiting the Earth clockwise. Which vector shows the direction of the gravitational force acting on the shuttle?
a
b
c
d
The space shuttle is orbiting the Earth clockwise. Which vector shows the direction of the shuttle's instantaneous velocity?
a
b
c
d
Two satellites of equal mass are in circular orbit around a planet. Satellite b is twice as far out. Which feels a stronger gravitational force?
Satellite a
Satellite b
Both the same
Why do astronauts in this space shuttle feel weightless?
They are in free fall, at the same rate as the shuttle
There is an equal force pulling them away from Earth
The gravity at that distance is too small to feel
They pull on Earth as hard as it pulls on them
Why do we not feel a gravitational attraction to the objects around us?
The masses are too small for the Fg value to be noticeable
Gravitational forces are not found on Earth
The radius between us and the objects is too great
Electrical forces overpower the gravitational forces
What is acceleration due to gravity on Earth?
98 m/s2
9.8 m/s2
0.98 m/s2
What is the formula to calculate Weight from mass(m) and gravity (g) ?
mass (m) / gravity (g) = weight
mass (m) + gravity (g) = weight
mass (m) - gravity (g) = weight
mass (m) x gravity (g) = weight
When something comes toward you it is a ______.
friction
push
pull
gravity
A _______ is any push or pull
gravity
friction
force
lubricant
___________ is an invisible force that pulls objects.
force
gravity
push
pull
The strength of the gravitational force between two objects depends on
Mass and Matter
Mass and Weight
Mass and Distance
Mass and Strength
The variables that affect the gravitational interaction between two objects are:
masses and directions of motions of the objects.
masses and speeds of the objects.
masses and distances between the objects.
distance between and speeds of the objects.
The force of gravity is directly proportional to ___ and inversely proportional with ___ F = G⋅r2m1 ⋅ m2
momentum & distance
distance & time
time & mass
mass & distance
Two objects attract with a force of 18N. If distance doubles, the new force will be
36 N
4.5 N
9 N
6 N
Two objects attract with a force of 18 N, if the distance triples, the force will be
2 N
18 N
9 N
54 N
The amount of matter in an object
Weight
Mass
Volume
Circumference
Weight is _________.
the quantity of matter in an object.
the measure of an object's inertia.
the force exerted by gravity on an object's mass.
equal to the mass of an object.
Earth's gravity, 9.8 m/s2, is considered a/an...
force
weight
acceleration
mass
Calculate the weight of a 10 kg pot roast
10 kg
10 N
98 kg
98 N
Which of the following measures the amount of gravitational force?
Mass
Time
Weight
Dreads
