Mechanics
What is mass the same as?
Inertia
What is the symbol for the spring constant?
k
What is the difference between longitudinal and transverse waves?
nucleons (protons and neutrons)
In a collision, what is conserved?
Momentum
What does an ideal mechanical system not account for?
friction/air resistance
What three things do you need to form a current?
a magnet, a wire, and motion
What type of wave can travel through a vaccum?
Light waves; sound waves rely on a medium to travel
When an electron goes up a level, is energy absorbed or emitted?
absorbed
How many degrees between vectors gives the biggest resultant?
0 degrees
Total energy in a system is equal to ... ?
The sum of potential, kinetic, and thermal energy
What type of wires are the best conductors?
cold, fat, and short wires
period
What color do absorption spectral lines appear to be?
black
When an object accelerates upwards in an elevator, is its normal force bigger or smaller than its weight (mg)?
Bigger
What are the different units for energy?
Joules and eV
How does the strength of the field change as you move between parallel plates?
What are the three things that happen when a wave hits an interphase?
Part is reflected, part is absorbed, and part is transmuted
How many frequencies can be emitted from 5 to 1?
10
What is the force of gravity between 2 1kg objects that are 1m apart?
Fg=6.67x10-11 N
What is a non-conservative force? Give an example
One that reduces the mechanical energy of a system, ie friction
What is a capacitator?
A device that can hold charge indefinitely then quickly releases it
What happens to the excess energy left over after an atom is ionized?
It is transformed into the kinetic energy of the electron