See what we can offer to your school
"SimpleStudy just makes sense...”
Get the best plan for your school
14 cards from this deck
Measure of how well a device converts input energy into useful energy
Wastes little energy
Wastes most of input energy
Thermal energy stores in surroundings
Useful energyTotal energy×100\frac{\text{Useful energy}}{\text{Total energy}} \times 100Total energyUseful energy×100
Joules (J)
Less than 100%
Energy cannot be created (conservation law)
Reduces friction between moving parts
Reduces thermal energy dissipation to surroundings
Wasted heat
Total Energy=Useful Output+Wasted Energy\text{Total Energy} = \text{Useful Output} + \text{Wasted Energy}Total Energy=Useful Output+Wasted Energy
Reduce air resistance
Heat in surroundings
Show more
Select your subjects, and get access to A+ resources today.