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FromTheMoon [43]
3 years ago
15

A sprinter with a mass of 70 kg accelerates at a rate of 5 m/

Physics
1 answer:
Crank3 years ago
8 0

F = ma

=   70kg ×  5ms⁻²

F =350N  

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A train travelling at 50km/h approaches another train moving towards the first at 90km/h. If they are 35km apart (on a straight
Ede4ka [16]

it will take 36 seconds


8 0
3 years ago
When vibrational motion in an object increases, which is a true statement?
ss7ja [257]
Hello friend!!

We know that kinetic energy is the energy possessed due to the motion of the object. And we know if the object is in a fast motion then the temperature would be high, whereas if the object is slow in motion then it will have lower temperature. So we know that the kinetic energy is indirectly related to temperature.From our knowledge we can conclude that HIGHER THE TEMPERATURE, HIGHER THE KINETIC ENERGY and LOWER THE TEMPERATURE, LOWER THE KINETIC ENERGY.
Hence, the answer to your question here is,a.kinetic energy, temperature, and thermal energy increase. 
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5 0
4 years ago
What is the speed of a wave that has a frequency of 25Hz and a wavelength of 3m
Arada [10]
The answer to the question is:

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4 0
3 years ago
Suppose that instead of a long straight wire, a shortstraight wire was used. The distance from the wire to thepoint that the mag
vichka [17]

Answer:

Thus, if field were sampled at same distance, the field due to short wire is greater than field due to long wire.

Explanation:

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The magnetic field is obviously directly proportional to the current wire. From this expression.

As the resistance of the long cable is proportional to the cable length, the short cable becomes less resilient than the long cable, so going through the short cable (where filled with the same material) is a bigger amount of currents. If the field is measured at the same time, the field is therefore larger than the long wire because of the short wire.

4 0
4 years ago
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trapecia [35]

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-- There are no "things" that have no mass.  Every sample of a liquid, a gas,
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I think the only possible items you could name that have no mass would be
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-- inclination
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-- sparkle
-- tingle
-- pain

Things like that.


8 0
3 years ago
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