Show:
Work
Power
Machines
Energy
Other
100
Two factors that must have when doing work.
What is force and motion?
100
The rate at which energy is transferred.
What is Power?
100
Work done on a machine
What is work input?
100
stored energy.
What is potential energy?
100
A group of objects that transfer energy only to each other.
What is a closed system?
200
Must be in the same direction as the force.
What is motion?
200
Formula used to calculate power.
What is Power = Work/time?
200
The product of the output force and the distance through which the force is exerted.
What is Work output?
200
formula for calculating kinetic energy
What is kinetic energy = mv2/2
200
Replaced much more slowly than they are used.
What is nonrenewable resources?
300
Formula used to calculate work.
What is Work = Force x distance?
300
Unit for power.
What is a Watt?
300
Formula for mechanical advantage.
What is MA= output force/input force?
300
The amount of work an object can do because the object's kinetic and potential energy.
What is mechanical energy?
300
Splitting a uranium atom into two smaller nuclei, releasing energy.
What is nuclear fission?
400
A Joule is equal to.
What is a Newton meter?
400
Joules/second
What is a Watt?
400
Why machines can't be 100% efficient.
What is friction?
400
Four forms of energy
What is thermal, chemical, electrical, sound, light, nuclear?
400
Energy can't be created nor destroyed but can be transformed from one form to another.
What is the Law of Conservation of Energy?
500
Force needed to lift an object is equal to...
What is the object's weight?
500
A light bulb is on for 12 seconds. It uses 1200J of electrical energy. What is the wattage for the light bulb?
What is 100 Watts
500
How a machine make works easier.
What is changing the size, direction or both of a force?
500
The kinetic energy of a 100kg dog running at 0.2 m/s?
What is 2J?
500
Out force is between the input force and the fulcrum
What is a second class lever?