1
Q
What does more efficient mean?
A
less energy that is wasted
2
Q
What is the equation for efficiency?
A
Efficiency = useful power output / total power input
Physics
flashcards
Decks in class (57)
# Cards
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Energy Stores and Systems6
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Kinetic and Potential Energy Stores7
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Specific Heat Capacity2
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Conservation of Energy and Power2
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Reducing Unwanted Energy Transfers4
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Efficiency2
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Energy Resources and Their Uses3
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Wind, Solar and Geothermal6
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Hydro-Electricity, Waves and Tides7
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Bio-Fuels and Non-Renewables5
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Trends in Energy Resource Use2
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Current and Circuit Symbols6
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Resistance and V=IR1
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Resistance and I-V Characteristics4
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Circuit Devices5
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Series Circuits3
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Parallel Circuits3
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Electricity in the Home12
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Power of Electrical Appliances3
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More on Power1
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The National Grid6
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The Particle Model and Motion in Gases4
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Density of Materials3
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Internal Energy and Changes of State3
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Specific Latent Heat4
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Developing the Model of the Atom6
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Isotopes and Nuclear Radiation12
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Nuclear Equations5
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Half-life4
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Irradiation and Contamination4
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Contact and Non-Contact Forces6
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Weight, Mass and Gravity6
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Resultant Forces and Work Done4
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Calculating Forces1
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Forces and Elasticity5
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Investigating Springs1
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Distance, Displacement, Speed and Velocity10
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Acceleration5
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Distance-Time and Velocity-Time Graphs11
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Terminal Velocity9
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Newton's First and Second Laws4
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Inertia and Newton's Third Law4
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Stopping Distances5
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Reaction Times4
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Momentum3
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Transverse and Longitudinal Waves6
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Experiments With Waves2
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Wave Behaviour and Electromagnetic Waves4
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Refraction8
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Radio Waves6
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EM Waves and Their Uses4
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More Uses of EM Waves7
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Dangers of Electromagnetic Waves3
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Permanent and Induced Magnets6
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Electromagnetism5
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The Motor Effect5
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Electric Motors6
