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Nataliya [291]
3 years ago
6

Rahul wants to change the motion map shown so that it shows uniform circular motion. What change should Rahul make?

Physics
2 answers:
MAVERICK [17]3 years ago
7 0

Answer:

B

Explanation:

saw5 [17]3 years ago
6 0

Answer:

B. He should change the lengths of the vectors that point tangent to the circle so that each is the same length.

Explanation:

A uniform circular motion is a motion in a circle where the tangential speed of the object is constant.

In the motion map:

- The arrows pointing towards the centre of the circle represent the centripetal acceleration, and their length represent the magnitude of the acceleration

- The arrows pointing tangential to the circle represent the tangential speed, and their length represent the magnitude of the speed

In this motion map, we see that the length of the vectors pointing tangent to the circle is not constant: this means that the speed is not constant. In order to have a uniform circular motion, the speed must be constant, therefore the lengths of the vectors that point tangent to the circle must be the same.

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. Determine if approximate cylindrical symmetry holds for the following situations. State why or why not. (a) A 300-cm long copp
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Answer:

a) Yes

b) No

Explanation:

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6 0
3 years ago
If a quasar is moving away from us at v/c = 0.8, what is the measured redshift?
Delicious77 [7]

Answer:

The measured redshift is z =2

Explanation:

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z= \sqrt{\cfrac{c+v}{c-v}}-1

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We can prepare the formula by dividing by lightspeed inside the square root to both numerator and denominator to get

z= \sqrt{\cfrac{1+\cfrac vc}{1-\cfrac vc}}-1

Replacing the given information

z= \sqrt{\cfrac{1+0.8}{1-0.8}}-1

z= \sqrt{\cfrac{1.8}{0.2}}-1\\z= \sqrt{9}}-1\\z=3-1\\z=2

Thus the measured redshift is z = 2.

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.......

Must be equal

Explanation:

..

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