Forces
What is acceleration?
The rate at which velocity changes.
kinetic energy=
1/2 x mass x speed^2
What is a wave?
A wave is a disturbance involving the transfer of energy to a place to a place
What is an infrared ray
The invisible heat you feel
If two north poles were facing each other, what would happen.
They repel
How do you calculate momentum?
Mass x velocity
Kinetic energy is due to the
Objects motion
How can you produce a longitudinal wave with an object
push or pull on end of an object
What are two most common broad casting signals
Am and Fm
Why do farmers put magnets in their cows?
To prevent metal from killing the cows
Static friction acts between
object that aren't moving
power=
Energy transferred/time
what is the wave length
Water
Wavelength frequency speed
[ ___ ] [200] [1500]
7.5
FM waves wavelengths ___________
FM frequencies ________
-Stays the same-
-Changes-
What did Orested do in his experiment?
He took a compass and put wires around it with no current then turned it on to find that the needle in the compass moves away from north