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antiseptic1488 [7]
3 years ago
15

A 1500 kg car travelling at 25 m/s collides with a 2500 kg van which had

Physics
1 answer:
sertanlavr [38]3 years ago
6 0
I’m not sure I think if you google it it should pop up or go on quizlet sorry
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. Each valve A, B, and C, when open, releases water into a tank at its own constant rate. With all three valves open, the tank f
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Answer:

Time taken by A and B is 1.2 hr.

Explanation:

Given that

Time taken by tank when all(A+B+C) are open = 1 hr

Time taken by tank when A+C are open = 1.5 hr

Time taken by tank when B+C are open = 2 hr

If we treat as filling of tank is a work then

Work = time x rate

Lets take work is 1 unit

1 = 1(1/a+1/b+1/c)          ---------1

1 = 1.5(1/a+1/c)           ----------2

1 = 2(1/b+1/c)             --------3

From equation 1 and 3

1=1(1/a+1/2)

a=2

Form equation 2

1 = 1.5(1/2+1/c)

c=6

From equation 3

 1 = 2(1/b+1/6)  

b=3

So time taken by

A is alone to fill tank is 2 hr

B is alone to fill tank is 3 hr

C is alone to fill tank is 6 hr

So time\ taken\ by\ A\ and\ B =\dfrac{2\times 3}{2+3} hr

Time taken by A and B is 1.2 hr.

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3 years ago
What is the average velocity of the object?
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Answer:the rate changes during the position of the object

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