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Crazy boy [7]
3 years ago
9

Determine the amount of work you would need to do in order to stop a 1100kg car with 1400J of kinetic energy.

Physics
1 answer:
LiRa [457]3 years ago
6 0

Answer:

 W = -1400 J

Explanation:

Let's use the relationship between work and kinetic energy

           W = ΔK

             

kinetic energy is

            K = ½ m v²

therefore in this case

             K₀ = 1400 J

         

Thus

            W = 0 -1400

            W = -1400 J

The negative sign indicates that the work is done against the energy, that is, in the opposite direction to the movement

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Answer:

18.7842493212 W

Explanation:

T = Tension = 1871 N

\mu = Linear density = 3.9 g/m

y = Amplitude = 3.1 mm

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Average rate of energy transfer is given by

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The average rate at which energy is transported by the wave to the opposite end of the cord is 18.7842493212 W

7 0
3 years ago
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Answer:

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Explanation:

The type  of force that holds the nucleus of an atom together is called Nuclear Forces.

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If it is brittle, dissolves easily in water, has a high melting point, and conducts electric current it is a(n) __________.
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Explanation:

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EC is the base for the mathematics, so EC is a base warmth at 360.

360 divided by 1/2 is 180

That is the speed in which the current has.

Glad I could help!

Call me if ya need anything!

:)

7 0
2 years ago
A Boy can raise a load of 200N up to a<br>height of 2.5m in 15 seconds. calculate his<br>power​
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Explanation:

f=mg

=200×10

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