Term 1
If two protons repel each other, what are the action/reaction pairs?
proton 1 pull proton 2, proton 2, pulls proton 1
What are three differences between gravity and coulomb's law?
gravity is weak, involves mass, and can only attract
What are the two ways to increase the electrostatic force?
More charge, less distance
Draw a transverse wave and label the amplitude and wavelength.
amplitude is midpoint to top or bottom.
wavelength is crest to crest to trough to tough
Draw a roller coaster going over a bump labeling the points where there is the most potential and kinetic energy?
PE at the top of the bump and KE at both bottoms.
Draw a velocity vs time graph showing an object moving at constant speed, slowing down, and then moving at a new non zero constant speed.
An object is pushed with a force of 4N for 2 seconds. What is the change in momentum of the object?
8 kgm/s
What are the 4 ways to maximize the current created from a magnet?
Stronger magnet
Faster moving magnet
more loops
tighter loops
If a student shakes a slinky up and down 12 times in 8 seconds, what is the frequency and the period of the wave created?
1.5 Hz=F
0.67s=P
Draw a parallel circuit with a current of 2 amps in one branch and a current of 4 amps in the other branch.
A voltage in the battery that double one resistance and 4x the other resistance.
Describe the motion of an object in equilibrium.
Constant speed or Stopped
A 5kg object is held rest 4 meters above the ground and released. What is the kinetic energy of the object 1m above the ground?
150J
What are the three ways to increase the current in a parallel circuit?
Increase voltage, decrease the resistance on a branch, add additional branches
Draw the law of reflection.
Normal line perpendicular. Angle in equal to angle out.
Draw a transverse and a longitudinal wave. Label each.
Transverse like an ocean wave. Longitudinal with clear compression.
As two protons move away from each other how does their speed change?
How can two people do the same amount of work?
Both apply no force
Both move no distance
both do the same force and distance
one does more force but less distance
Draw the schematic diagram symbols for a fuse, light bulb, resistor, battery, switch, and wire.
know these!
What are three similarties and three differences between XRays and Microwaves?
Xrays have more frequency and energy. Less wavelength
Both are transverse, pass through a vacuum, and move at the speed of light
Draw a temperature vs time graph for a hot and a cold object in thermal contact.
Hot gets colder, cold gets hotter, end at thermal equilibrium
How FAR does an object fall in 4 seconds?
80m
A 4kg trains is moving at 2 m/s when it collides and sticks to a motionless train with equal mass. The carts after move connected with a speed of 1 m/s. How much is "lost" during the collision?
4J
Create an experiment to prove Ohm's law.
Constant R, change V and measure I
Constant V, change R and measure I
What causes a wave to refract?
Changing wave speed
Draw a force diagram for a 4kg object accelerating at 2m/s^2 if friction is 1N.
40N down and up. 9N right, 1N to the left.