Mechanical energy includes which 2 subtypes of energy
What is kinetic energy and potential energy
100
If an object with an unknown mass held 4 meters above the ground has 400 J of gravitational potential energy, how much kinetic energy will it have just before it reaches the ground if you drop it?
What is 400 J
100
Oil, natural gas, uranium, and coal are all nonrenewable energy resources. Which is NOT a fossil fuel?
What is uranium
100
If you drop an object from a height of 10 meters on Earth, how fast will it be traveling just before it hits the ground?
(You may ignore air resistance.)
What is 14 m/s
200
The SI unit of force
What is newtons (N)
200
How much kinetic energy does a 2 kg ball traveling at 3 m/s have?
What is 9 J
200
If you throw an object straight up with 200 J of kinetic energy, how much kinetic energy will it have at its highest point?
What is 0 J
200
Name one advantage and one drawback of using hydroelectric energy
What is ...
200
Which has more kinetic energy: a 7 kg bowling ball traveling at 5 m/s or a 1 kg shotput traveling at 20 m/s
What is the shotput
300
The SI unit of weight
What is newtons (N)
300
How much gravitational potential energy does a 10 kg bucket sitting on the ground on Earth have
What is 0 J
300
If a rubber ball doesn't lose any energy when it bounces and you drop it with 50 J of gravitational potential energy, how much gravitational potential energy will it have after bouncing and returning to its original height?
What is 50 J
300
What is the fuel in today's nuclear power plants?
What is uranium
300
Which has more gravitational potential energy: a 50 kg diver on a 10 m platform or a 100 kg diver on a 5 m platform?
What is they are the same
400
The SI unit of power
What is watts (W)
400
If an object's speed goes up by 10 times, how much does its kinetic energy increase?
What is 100 times
400
There are two objects in a closed system. If the first has 10 J of kinetic energy and 20 J of gravitational potential energy, and the second has 5 J of gravitational potential energy and 15 J of elastic potential energy, how much total mechanical energy is there in the system?
What is 50 J
400
Give an example of a way that greater efficiency can be used to consume less energy resources.
What is ...
400
According to Einstein's equation, how much energy is stored in 1 kg of matter?
What is 9 x 10^16 J
500
The SI unit of nuclear energy
What is joules (J)
500
If an object is raised from a height of 5 meters to a height of 20 meters, how much does its gravitational potential energy increase?
What is 4 times
500
When wood is burned, what form of energy is converted into what other form(s) of energy?
What is chemical energy is converted into thermal and electromagnetic energy
500
What are the FOUR types of solar energy we've learned about
What are active, passive, photovoltaic/solar cells, and CSP (concentrated solar power)
500
How much elastic potential energy is stored in a spring if it has a spring-constant of 40 N/m and it is stretched 0.5 m from its rest length?