alleryStart learning →Rank these machines by efficiency
Read exercise and reference answers
- Questions
- A
- Electric motor
- B
- Coal power plant
- Higher value
- Electric motor
- A
- Steam engine
- B
- Diesel engine
- Higher value
- Diesel engine
- A
- Cycling and climbing
- B
- Swimming at the surface
- Higher value
- Cycling and climbing
- A
- Solar cell
- B
- Residential gas heater
- Higher value
- Residential gas heater
- A
- Weightlifting
- B
- Shoveling
- Higher value
- Weightlifting
- A
- Gasoline engine
- B
- Nuclear power plant
- Higher value
- Nuclear power plant
- Instructions
- Tap the one in each pair with the higher efficiency, the share of input energy that does useful work.
_Source: OpenStax College Physics, section 7.6 Conservation of Energy_