3 years ago

Which two energy sources together provide more than 50% of the energy needs of the United States?

Physics

1 answer:

SVEN [57.7K]3 years ago

6 0

Answer:

Petroleum ( over 30% energy )

Natural gas ( over 30% energy )

Explanation:

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From the question we have

force = 1000 × 3

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A softball player moving 3.89 m/s

guapka [62]

Answer:

0.119 s is the correct answer to this question.

Explanation:

As mentioned in the question

U=3.89\ m/s

a=-1.44\ m/s^2

S=4.8\ m

Consider the final speed of the softball covering the distance of 4.8m is v

Now using the equation

$v^2=U^2+2aS$

Putting the value of U, A, S in the previous equation we get

$V^2=3.89^2-2\times 1.44\times 4.8\\V=3.7\ m/s\\$

Now again using the equation

v=U+at

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Substituting the value of v, U, a

$3.7=3.89-1.44\times t\\t=0.119\ s\\$

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