Waves
What is a medium
A substance that can transmit energy
How many laws does Newton have?
three
What is power?
The rate at which work is done or how much work is done in a certain amount of time
What is energy?
the ability to do work
What is a magnetic force?
The attractive and repulsive forces between two poles
What do waves do?
Transmit energy from one place to another
What is Newtons law called?
Law of motion
How do you calculate power?
Power= work/time
What are five forms of energy
Heat,chemical,electromagnetic,Nuclear, and mechanical
What are Electric forces?
occur when ions create attractive and repulsive forces
What are two mechanical waves?
Transverse and longitudinal waves
What is Newtons first law?
Things that are still stay still and things that are moving keep moving with a steady speed unless a force of some kind pushes or pulls on them.
What is work?
The transfer of energy when an applied force moves an object over a distance
What are three ways heat can transfer
conduction, convection, and radiation
What is Electromagnetism?
a force combining both electric and magnetic forces
Vibrate parallel to the direction of propagation of the wave.
What is Newtons 2nd law?
When a force acts (pushes or pulls) on an object, it changes the object’s speed or direction. The bigger the force, the more the object accelerates.
How do you calculate work?
Work=force x distance
What is the law of conservation of energy?
Energy cannot be created nor destroyed by ordinary means
What happens if two poles get closer to each other
As poles come close to each other they either attract or repel.
Particles vibrate perpendicular to the direction of propagation of the wave
What is Newtons 3rd law?
When a force acts on an object, there’s equal force acting in the opposite direction.
what is work measured in?
Joules
What two states can energy be in
Potential and kenetic
What is electric current measured in?
Amperes