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saw5 [17]
3 years ago
10

What happens during an equinox?

Physics
1 answer:
MAVERICK [17]3 years ago
6 0
The sun is directly above the equator of the earth. There is approximately equal length of night and day all over the earth.

The two dates associated with equinox during the year are around March 20 and September 23.
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3 years ago
A bulb converts 9J of energy in each second from an input of 100J of energy. Calculate efficiency of this light bulb
77julia77 [94]
Efficiency is calculated through dividing the actual mechanical advantage by the hypothetical mechanical advantage:

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- the hypo. mechanical advantage is 100J. Ideally, in a perfect world, the light bulb can convert 100J input into 100J output, but do to resistance and other factors it is not possible.

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8 0
4 years ago
Mary was looking out of the window she saw lightening and then heard thunder a few seconds later explain why she saw lightening
alekssr [168]

Explanation:

It is based upon the fact that " The light travels faster then sound." As the speed of light is faster then the speed of sound, light travels 300,000 km per second and sound travels 1192 km per hour. That is why we observe the lightening first and hear the the sound of thunder later.

        You can do this experiment by yourself. Once you see the lightening start counting the seconds until you hear the sound of thunder.Then divide the seconds by 5, you will find out how many miles away the lightening strike was.

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4 years ago
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prisoha [69]

Answer:

b Day-to-day condition of the atmosphere

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3 0
3 years ago
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