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dsp73
3 years ago
5

To find power we need to determine?

Physics
1 answer:
Lera25 [3.4K]3 years ago
6 0

Answer:

Work and time needed to the work

Explanation:

Power is defined as follows:

P=\frac{W}{t}

where

P is the power

W is the work done

t is the time needed to do the work

Since the work can also be rewritten as the product between force (F) and displacement (d):

W = F d

The power can be also rewritten as

W=\frac{Fd}{t}

But \frac{d}{t} is equal to the velocity, v; so, power can be rewritten as product between force and velocity:

P=Fv

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Answer:

s =  1.7 m

Explanation:

from the question we are given the following:

Mass of package (m) = 5 kg

mass of the asteriod (M) = 7.6 x 10^{20} kg

radius = 8 x 10^5 m

velocity of package (v) = 170 m/s

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Assuming that no non conservative force is acting on the system here, the initial and final energies of the system will be the same. Therefore  

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• Ef = kinetic energy of the object

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• \frac{1}{2}ks^{2} + (-\frac{GMm}{r}) = \frac{1}{2}mv^{2}  

• s = \sqrt{\frac{m}[k}(v^{2}+\frac{2GM}{r})}

s = \sqrt{\frac{5}[2.8 x 10^5}(170^{2}+\frac{2 x 6.67 x10^{-11} x 7.6 x 10^{20}}{8 x 10^5})}

s =  1.7 m

7 0
3 years ago
How is air temperature related to high and low pressure air
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Answer: So, I looked at it to see what was the correct one, and the correct answer is Cool air near surface forms high-pressure areas, warm air forms low pressure areas. I hope this helps :D :)

Explanation:

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2 years ago
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The answer would be:

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