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If no friction acts on a diver during a dive, then which of the following statements is true?
electromagnetic
electrical
kinetic energy plus its potential energy
4.2 m/s
energy
(KE + PE)before = (KE + PE)after
thermal energy
40J
A small 20 kg canoe is floating downriver at a speed of 2 m/s. What is the canoe's kinetic energy?
electromagnetic
electrical
kinetic energy plus its potential energy
4.2 m/s
energy
(KE + PE)before = (KE + PE)after
thermal energy
40J
A 13 kg sled is moving at a speed of 3.0m/s. At which of the following speeds will the sled have twice as much kinetic energy?
electromagnetic
electrical
kinetic energy plus its potential energy
4.2 m/s
energy
(KE + PE)before = (KE + PE)after
thermal energy
40J
Solar cells convert what type of energy into electrical energy?
electromagnetic
electrical
kinetic energy plus its potential energy
4.2 m/s
energy
(KE + PE)before = (KE + PE)after
thermal energy
40J
Nuclear power plants are designed to convert nuclear energy into what type of energy?
electromagnetic
electrical
kinetic energy plus its potential energy
4.2 m/s
energy
(KE + PE)before = (KE + PE)after
thermal energy
40J
Which of the following increases when an object becomes warmer?
electromagnetic
electrical
kinetic energy plus its potential energy
4.2 m/s
energy
(KE + PE)before = (KE + PE)after
thermal energy
40J
Work is a transfer of
electromagnetic
electrical
kinetic energy plus its potential energy
4.2 m/s
energy
(KE + PE)before = (KE + PE)after
thermal energy
40J
The mechanical energy of an object equals its
electromagnetic
electrical
kinetic energy plus its potential energy
4.2 m/s
energy
(KE + PE)before = (KE + PE)after
thermal energy
40J
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