What is the force used by the brakes of a bike, to transfer kinetic energy into thermal energy?
Friction.
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15
Power is the rate of work done. [True/false]
True
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heart
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fairy
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gift
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baam
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15
What is the equation to calculate elastic potential energy?
E = 1/2 k e2
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15
A roller coaster has 2500J of gravitational energy at the top of a loop. (assuming there is no friction) How much Kinetic energy does it have on the ground at the bottom of the loop?
2500J
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15
A laptop transfers electrical energy to light, sound and thermal. Which type of energy is considered wasted?
Thermal
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15
What type of energy is stored in a sandwich?
Chemical Energy
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trap
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seesaw
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shark
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thief
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shark
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shark
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lifesaver
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15
What type of energy is store in a battery?
Chemical Energy
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seesaw
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fairy
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fairy
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15
What type of energy is transferred around a circuit?
Electrical
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15
When a tennis ball is drop it transfers gravitational potential energy into which type of energy?
Kinetic
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15
Burning fossil fuels releases sulfur oxides into the atmosphere. What negative environmental effect can sulfur oxides cause?
Acid rain
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15
A cyclist uses their brakes. What are you calculating if you times the friction force by the distance covered whilst braking?
Work done / energy transferred [Work done = force x distance]
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15
How do you calculate the amount of "work done" when doing a deadlift?