1
Q
What is efficiency
A
Tells how much energy we put into an appliance is transferred to useful forms of energy
2
Q
How do we calculate efficiency
A
Efficiency= useful output energy / total input
Efficiency = useful power output / total power input
3
Q
What can the answer not be over
A
100% or 1.0
4
Q
How do you increase efficiency
A
Reduce friction or loss of unneeded energy
Physics
flashcards
Decks in class (61)
# Cards
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Waves26
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Electromagnetic Waves12
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Sound Waves24
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Refraction Of Waves0
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Contact + Non Contact Forces11
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Scalar And Vector Quantaties4
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Gravity And Weight10
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Resultant Force3
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Forces And Elasticity0
-
Moments0
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Levers And Gears0
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Pressure In Fluids0
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Floating And Sinking0
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Speed0
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Kinetic Energy8
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Elastic Potential Energy11
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Gravitational Potential Energy7
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Specific Heat Capacity8
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Pendulum10
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Bungee Jumpers1
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Work Done By Force5
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Calculating Power4
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Efficiency4
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Cooling Of A Building6
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Density3
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Internal Energy3
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Energy Fossil Fuels0
-
Nuclear Fossil Fuels0
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Renewable Energy0
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Uk Energy Mix0
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Energy Stored And Systems10
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Thermistors4
-
Resostors1
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Dc And Ac6
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Mains Electricity12
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Fuses10
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Static Electricity0
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Equations2
-
LdR4
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diode + LED5
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Series Circuit10
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Parallel Circuit5
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Renewable + Non Renewable0
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Particles0
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Density15
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Required Practical:density2
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Internal Energy1
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National Grid9
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Charge1
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Energy Resources0
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Conduction Concection Radiation13
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Insulation And Lubrication0
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Atomic Structure5
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Radiation19
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Nuclear Equations5
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Half Life10
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Why Is Radiation Harmful0
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Use Of Radiation In Medicine0
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Nuclear Fission0
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Nuclear Fusion0
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Radon Gas & Cosmic Rays0
