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pishuonlain [190]
3 years ago
12

If an object had a negative velocity, then it must be travelingNorthUpEastSouth​

Physics
1 answer:
alexgriva [62]3 years ago
8 0

Answer:

im not sure which way the object was supposer to be traveling but a negative velocity means its going backwards

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200 degrees because I need the points
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A 10kg sphere hits a stationary 8kg sphere. After the collision the 8kg sphere moves off in the positive direction at 4m/s. If t
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M = mass of the first sphere = 10 kg

m = mass of the second sphere = 8 kg

V = initial velocity of the first sphere before collision = 10 m/s

v = initial velocity of the second sphere before collision = 0 m/s

V' = final velocity of the first sphere after collision = ?

v' = final velocity of the second sphere after collision = 4 m/s

using conservation of momentum

M V + m v = M V' + m v'

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3 years ago
. 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
olasank [31]

Answer:

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Explanation:

Given that

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

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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

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c=6

From equation 3

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So time taken by

A is alone to fill tank is 2 hr

B is alone to fill tank is 3 hr

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Time taken by A and B is 1.2 hr.

7 0
3 years ago
Which option is an example of reflection?
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A

Explanation:

sound waves hit the canyon walls, then bounce back towards you. That's why you hear an echo

6 0
2 years ago
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