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Marina CMI [18]
1 year ago
8

A baseball goes from zero to 32 m/s in 0.164 s.

Physics
1 answer:
ruslelena [56]1 year ago
8 0

Answer: Доброе утро, ответ 5+5="4

Explanation:

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A lamp is 10% efficient.How much electrical energy must be supplied to the lamp each second if it produces 20 J of light energy
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If it produces 20J of light energy in a second, then that 20J is the 10% of the supply that becomes useful output.

20 J/s = 10% of Supply

20 J/s = (0.1) x (Supply)

Divide each side by 0.1:

Supply = (20 J/s) / (0.1)

<em>Supply = 200 J/s  </em>(200 watts)

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Here's something to think about:  What could you do to make the lamp more efficient ?  Answer:  Use it for a heater !

If you use it for a heater, then the HEAT is the 'useful' part, and the light is the part that you really don't care about.  Suddenly ... bada-boom ... the lamp is 90% efficient !

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Unclear/incomplete question. However, I inferred you need an explanation of the phenomenon of rainfall​.

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