Energy 01 - Conservation of Energy (P)
* Enter only the minimum amount of energy needed to satisfy the law of conservation of energy.

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1. A system began with 3 units of motion energy and  1 unit of gravitational potential energy. It ended with 2 units of thermal energy, no units of gravitational potential energy and some motion energy. No energy was transferred in or out of the system as work.
6 points
-4
-3
-2
-1
0
1
2
3
4
Motion (initial)
Gravitational Potential (initial)
Work
Motion (final)
Gravitational Potential (final)
ΔThermal
Clear selection
2. A system began with chemical potential energy. It ended with 2 units of sound energy,  1 unit of light energy and 1 unit of thermal energy. No chemical potential energy remained and no energy was transferred in or out of the system as work.
8 points
-4
-3
-2
-1
0
1
2
3
4
Chemical Potential (initial)
Sound (initial)
Light (initial)
Work
Chemical Potential (final)
Sound (final)
ΔThermal
Light (final)
Clear selection
3. A system began with 3 units of gravitational potential energy. It ended with 1 unit of thermal energy and no units of gravitational potential energy. Negative work was done on the system.
4 points
-4
-3
-2
-1
0
1
2
3
4
Gravitational Potential (initial)
Work
Gravitational Potential (final)
ΔThermal
Clear selection
4. Positive work was done on a system with no initial elastic potential energy which resulted in 3 units of elastic potential energy and 1 unit of thermal energy.
4 points
-4
-3
-2
-1
0
1
2
3
4
Elastic Potential (initial)
Work
Elastic Potential (final)
ΔThermal
Clear selection
5. A system began with -2 units of gravitational potential energy and some motion energy. 3 units of work was done on the system which resulted in 2 units of motion energy and 1 unit of gravitational potential energy.
5 points
-4
-3
-2
-1
0
1
2
3
4
Gravitational Potential (initial)
Motion (initial)
Work
Gravitational Potential (final)
Motion (final)
Clear selection
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