Momentum and Impulse
Conservation of Momentum
Waves
Wave Math
Static Electricity
Electromagnetics
100
Use impulse momentum to explain the effect of an air bag in a car.
Slows the impulse - longer time = less force
100
A 2 kg ball has a momentum of 8 kg· m/s. This is the ball’s speed.
What is 4 m/s?
100
The distance between identical parts of a wave
What is wavelength?
100
The velocity of a 3 m wave with a frequency of 20 Hz.
What is 60 m/s
100
This type of material tends to take electrons and become negatively changed
What is an insulator?
100
In magnets, like charges do this
What is repel each other?
200
The change in momentum of a plane (4740 kg) going from stationary to 270 m/s while taking off.
What is 1,279,800 kg*m/s?
200
When a person falls off a skateboard in the west direction, the skateboard does this.
increases momentum (or velocity) east
200
The time needed for a wave to complete one cycle
What is period?
200
The wavelength if there are 8 waves between 2 objects that are 40 m apart.
What is 5 m?
200
Electrical charge is always DRAWN going this direction
What is + to -?
200
This machine converts mechanical energy into electrical energy
What is a generator?
300
The amount of force necessary to stop a 60-gram (0.060 kg) object (initial speed 20 m/s) in 0.2 seconds.
what is 6 N?
300
Elastic or inelastic: a bowling ball hits a bowling pin.
What is elastic?
300
A point where a wave crosses equilibrium
what is a node?
300
The amount of time it will take for waves with a frequency of 60 Hz and a wavelength 10 cm of to travel 4.5 m
What is 0.75 s?
300
If you bring a positively charged item A NEAR a neutral item B (not a conductor), the side of B facing A will become this.
what is negatively charged?
300
These are the 3 ways to increase the strength of an electromagnet
What are increase voltage or battery, increase number of coils, increase core size
400
The average force necessary to take a plane (4740 kg) from stationary to 270 m/s in 60 seconds.
What is 21,330 N?
400
Object 1: car, 1200 kg, 20 m/s
Object 2: mailbox, 20 kg, stationary
This is their speed after a perfectly inelastic collision:
what is 19.67 m/s?
400
This indicates the power of a wave
what is amplitude
400
this type of interference:
What is destructive interference?
400
If 2 charged objects move twice as far apart, this happens to the force between them.
What is divided by 4?
400
A compass (north point) will point towards this side.
What is the left (S) side?
500
How a graph of force applied throughout a bicycle crash would change if the rider was wearing a helmet (vs no helmet)
What is a longer (wider) time with helmet, and a lower peak force?
500
Cart A has a mass of 5 kg and is moving with an initial speed of 8 m/s towards cart B.
Cart B has a mass of 3 kg and is initially at rest.
They then crash into and stick to each other. This is their final speed.
What is 5 m/s
500
this determines whether a sound wave is high or low pitched
what is frequency?
500
The wavelength of a wave with 5 nodes on a 62 cm string
What is 31 cm OR 0.31 m
500
The force between an electron (-1.6 x 10^-19) and proton (1.6 x 10^-19) that are 5 micrometers apart
What is 9.2 x 10 -18 N (attractive)
500
The center of this diagram:
What is a wire with current coming out of screen?