Energy
What is the equation for Gravitational Potential Energy?
Eg = mgh
What is the equation for NLUG?
Fg = Gm1m2/r^2
What is the wave equation?
v = (wavelength)*(frequency)
What is the equation for Coulomb's Law?
Fe = kq1q2/r^2
For work to be done, what must be true about the direction of force and displacement?
They must be parallel.
What is the force of gravity between two students, with masses of 70 and 80kg, who are 5 meters apart?
1.5*10^-8N
If you double the frequency of a wave, how does its velocity change?
It doesn't.
Write out the equation for adding resistors in parallel?
(1/R1+1/R2+...)^-1
If Tarzan swings from a height of 15m, how fast is he moving at the bottom of the swing?
17.3m/s
How fast is a geosynchronous satellite orbiting with a radius of 42,164,000m?
3076m/s
If you double a wave's frequency, what happens to its wavelength?
It halves.
A circuit has 2 resistors, 5 and 25 Ohms respectively, connected in series with a 9V battery. What is the current through the 5 Ohm resistor?
0.3A
If a 2kg box is at rest on a spring with a spring constant of 1500N/m, which is compressed .4m, how high will the box fly when released?
6m
Find the escape velocity for a planet with a mass of 5.683*10^26 and a radius of 5.82*10^7m.
36092m/s
If a wave has a frequency of 5Hz, what is its period?
0.2s
A 20, 30, and 60 Ohm resistor are all connected in parallel with a 120V battery. What is the current through the 20 Ohm resistor?
6A
Calculate the kinetic energy of a 500 kg car traveling at a speed of 20 m/s. How does this energy change if the car's speed is doubled?
100000J
It quadruples.
How often do Geosynchronous satellites orbit the earth?
Daily
What is the frequency of a blue light wave with a wavelength of 460nm?
6.52*10^14Hz
A 20, 30, and 60 Ohm resistor are all connected in parallel with a 120V battery. What is the total current in the circuit?
12A