Work
Machines
Energy
Thermal Energy
Grab Bag
100
What is work?
What is Force x Distance
100
A device that does work with only one movement and changes the size or direction of a force
What is a simple machine
100
What is stored energy?
What is potential energy
100
The average kinetic energy in a substance is measured by
What is temperature
100
Touching a hot stove is an example of
What is conduction
200
200 kg coach being pushed 3 m/s2 across a 20 m room. How much work was done?
What is 12,000 J
200
A bar that is free to pivot about a fixed point is
What is a lever
200
Kinetic energy + potential energy =
What is mechanical energy
200
30 degrees Celsius is what is kelvins?
What is 303
200
Food has what type of energy
What is chemical
300
It took 1,000 J to lift a bucket of water 5 m. What is the mass of the bucket?
What is 20 kg
300
What makes a block easier to lift by changing the direction of the force needed to lift it
What is a fixed pulley
300
A car has a 2000 kg is going 30 m/s, how much kinetic energy does the car have?
What is 900,000 J
300
What type of heat transfer occurs in a tanning bed?
What is radiation
300
Absolute 0 occurs on what temperature scale
What is Kelvin
400
If it took 10,000 J and 200 N of force to move a car, how far did you move it.
What is 50 m
400
If the output work is 2000 J yet the machine required 4000J of input work, then the machine's efficiency is
What is 50%
400
A football is tossed in the air. At what point of the trajectory does the ball have the greatest amount of potential energy?
What is the ball's peak
400
How much energy is required to heat up 40 g of water from 3 degrees to 8 degrees? 4.184 J/ g * C
What is 837 J
400
Heat moves from ___________ regions to________ regions
What is hot to cold
500
The ramp has a length of 15 m and a height of 5 m. If it takes 100 N of force to push up a box, how much work have you done>
What is 1500 J
500
What is the IMA of a ramp that is 15 m long and 3 m high?
What is 5
500
A 5 kg owl sits on a branch located 12 m above the ground. What is the owl's potential energy?
What is 600 J
500
A phase change ( melt/ freeze or boil/condense) is represented by a flat or slanted line on the Changes of State graph
What is flat
500
Kinetic energy will increase if mass and _____ increases .
What is velocity
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