Karteikarten
Physics 1 (Chapter 2)
Karten in diesem Stapel (10)
- 1Chemical energyEnergy stored in fuel (including food). This energy is released when chemical reactions take place.
- 2Kinetic energyEnergy of a moving object
- 3Gravitational potential energyEnergy of an object due to it's position
- 4Elastic potential energyEnergy stored in a springy object when we stretch it or squash it
- 5Electrical energyEnergy transferred by an electric current
- 6Q. When a ball falls in air it loses ______ energy and gains _______ energy. (Fill in the blank)-Gravitational potential energy
-Kinetic energy - 7Q. When an electric heater is switched on, it transfers ______ energy by heating. (Fill in the blank)-Electrical
- 8Useful energy and wasted energy-Useful energy is energy in the place we want it and in the form we need it.
-Wasted energy is energy that is not useful energy. - 9Efficiency equationEfficiency= useful energy transferred by the device ÷ total energy supplied to the device x 100%
- 10An electric motor is used to raise an object. The object gains 60J of gravitational potential energy when the motor is supplied with 200J of electrical energy. Calculate the percentage efficiency of the motor.=60J ÷ 200J = 0.30 x 100% = 30%
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- Beschreibung
- These sets of cards will test you on your knowledge of the keywords in P1 chapter 2
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