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denis-greek [22]
3 years ago
10

What is the speed of a runner that runs 400m in 48.42 seconds?

Physics
1 answer:
nika2105 [10]3 years ago
3 0

Answer:

The speed is that it would take 121.05 seconds to run a kilometer.

Explanation:

Since there are 1000 meters in a kilometer, divide 400 meters by 4, and 48.42 by 4. Then you get 100 meters equals 12.105 seconds. Multiply that by ten, and you get 121.05 seconds

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Water is most dense at 4 degrees Celsius. Since at this temperature 1 ml of water has a mass of 1 g. What is its density?
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7 0
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Ann [662]

Answer:

Explanation:

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Fittoniya [83]

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5 0
3 years ago
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A transformer consists of 290 primary windings and 824 secondary windings. Part A: If the potential difference across the primar
jasenka [17]

Answer:

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Explanation:

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where

Np no of turns in primary coil

Ns no of turns in secondary coil

Vp Voltage of turns in primary coil

Vs Voltage of turns in secondary coil

Applying values in the formula we get

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Part 2)

Using Ohm's law the current is given by

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5 0
2 years ago
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