Motion & Momentum
Forces
Energy & Work
Waves
Electricity & Magnetism
100
This is the formula for velocity
What is distance/time
100
Draw a force diagram for a book sitting on a table, all labels correct.
(see board)
100
Energy is measured in this unit
Joules
100
This is the furthest a wave vibrates from its resting position
amplitude
100
What happens to the current as the resistance of a series circuit increases?
Current decreases
200
A change in velocity is called this
What is acceleration
200
What is the net force on a box being pushed with a 45 N force to the left and experiencing a frictional force of 30 N to the right
What is 15 N left (or -15 N)
200
Name 4 of the 8 types of energy
chemical, light, heat, sound, nuclear, kinetic, gravitational potential, electrical
200
this is what it is called when waves overlap and add to a higher amplitude
constructive interference
200
Draw a charge diagram for a negatively charged balloon that comes very close to a wall, but doesn't touch? Bonus points: what is this phenomenon called?
(see board)
Polarization
300
This is the most important factor when trying to protect an object in a collision (to reduce the force on the object)
Make the collision occur over a longer time interval
300
A bug smashes against the windshield of a tractor trailer moving at 60 miles per hour. Which exerts more force, and why?
Tractor trailer pushing on Bug OR
Bug pushing on Tractor Trailer
SAME force, Newton's 3rd Law!!
300
As an object slides down a hill (with some friction), what energy conversion is taking place?
Gravitational potential energy --> heat and kinetic
300
Waves carry______ from place to place, and not ___________.
energy, not matter
300
What is it called when electrons want to travel so badly that an insulator becomes a conductor and there is a spark?
Dielectric breakdown
400
this is what happens when an object falls through the air for a long time and air resistance ends up canceling out the gravitational force
Object reaches terminal velocity
400
What happens to acceleration if mass is doubled and net force stays the same?
Acceleration is cut in half
400
What does work depend on?
force exerted and the distance over which the object is pushed/pulled
400
When wavelength increases, this will always decrease if the medium stays the same
Frequency
400
Explain what happens to current in a circuit if more resistors are added in parallel, and why
Current INCREASES because more paths for current to flow means resistance decreases
500
An object's motion is graphed. What is the object doing? Describe specifically.
The object is moving forward at a velocity of 5 m/s for 5 seconds, and then standing still for five seconds.
500
If a light bullet and heavy bullet are each shot downward with of the same type of gun, which will reach the ground first, or will they reach at the same time? Bonus points: WHY?
light bullet first--it has a higher acceleration when being pushed out of the gun because it has less mass with the same force from the gun. This makes it start out moving faster, so it reaches the ground faster.
500
If the velocity of an object is doubled, and the mass is cut in half, what happens to the kinetic energy?
It doubles
500
What are the typo wave types (shapes) and the difference between them?
Transverse - vibrations/oscillations perpendicular to the wave
Longitudinal - vibrations/oscillations parallel to the wave
500
What are the 4 main parts of an electric motor?
Commutator, electromagnet, rotor (with magnets in it)