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pentagon [3]
3 years ago
14

Low-frequency red light is used in dark rooms because it does not expose the film. This is because the red light has a low

Physics
2 answers:
Alex3 years ago
4 0

energy. It will not disrupt the picture developing process by overexposing too much light on the film.

xeze [42]3 years ago
4 0

The answer is B (energy). I have had this question before and B is correct.

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You lift a large bag of flour from the floor to a 2.5m high counter, doing 400J of work in 2 seconds. How much force did you app
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<h2>The man have to apply force of 160 N</h2>

Explanation:

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The work done can be found by relation  W = mg x h

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