GIVE FULL ANSWER FOR #1 AND #4 AND FOR #2 AND #3 JUST STATE THE CORRECT MULTIPLE

ID: 2261161 • Letter: G

Question

GIVE FULL ANSWER FOR #1 AND #4 AND FOR #2 AND #3 JUST STATE THE CORRECT MULTIPLE CHOICE ANSWER

1. Under what conditions is the total linear momentum of a system conserved?

2. During the collision in a ballistic pendulum which of the following quantities is (are) conserved?

a) Energy.

b) Linear Momentum.

c) Angular Momentum.

d) All of the above.

3. Which of the followings eect(s) the time necessary for an object to reach terminal velocity?

a) Shape of the object.

b) Temperature of the medium.

c) Viscosity of the medium.

d) All of the above.

4. A spherical object is moving in a liquid for which the Reynolds criterion is known to be 1500.

Due to thermal uctuations the viscosity of the liquid drops to 1/4 of its original value. Is the body

still feeling a laminar ow? If not, explain why.

1. When there is no external force acting on the system

2. All of them

3. All of them

4. Since the terminal speed increases, cant feel the same laminar flow

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