Answer the following questions with correct units if needed. Question 1. Kelper\

ID: 1372481 • Letter: A

Question

Answer the following questions with correct units if needed.

Question 1. Kelper's Laws state that

A). the length of the year on another planet depends on the semi-major axis of its orbit.

B). the length of the year on another planet depends on the semi-minor axis of its orbit.

C). the orbits of the planets ate perfect circles.

Question 2. The units of stress are

A). N/m squared

B). N/m

C). selyes

Question 3. The units of strain are

A). N

B). N/m squared

C). N/m

D). sigmunds

Question 4. Newton gets credit for F=ma and the Law of Universal Gravitation, but credit for the Principle of Inertia must be shared with

A). Hooke

B). Galileo

C). Kelper

D). Brahe

Question 5. If a motor is turning at 60.0 rpm what is its angular velocity in rad/min?

A). 95.5 rad/min

B). 1.59 rad/min

C). 600 rad/min

1) option a is the correct answer. Keplers third law states that the periods of the planet are propotional to the cubes of their semi major axis

2) Option a is the correct answer. Stress unit =Force/Area=N/m2

3) Strain has no unit. It is defined as change in length to the original length

4)B . Galileo. He introduced the concept initially. Newton himself accepted in his book that the influence of Galileo in the inertia concept

5)1 rad/sec=60/2pi rpm

So 60 rpm=9.55 rad/min

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