# Exam 6 Physics Numbers 11-15

5 Questions | Total Attempts: 36  Settings  .

• 1.
In the figure, according to Kepler’s laws of planetary motion,
• A.

A1 = A2.

• B.

Delta t1 > delta t2.

• C.

If delta t1 = delta t2, then the orbit is circular.

• D.

If delta t1 = delta t2, then A1 = A2.

• 2.
12.  In the equation for the speed of an object in circular orbit, what does m represent in this equation?
• A.

The mass of the sun

• B.

The mass of Earth

• C.

The mass of the central object

• D.

The mass of the orbiting object

• 3.
13. How would the speed of Earth’s orbit around the sun change if Earth’s mass increased by 4 times?
• A.

It would increase by a factor of 2.

• B.

It would increase by a factor of 4.

• C.

It would decrease by a factor of 2.

• D.

The speed would not change.

• 4.
14. How would the speed of Earth’s orbit around the sun change if Earth’s distance from the sun increased by 4 times?
• A.

It would increase by a factor of 2.

• B.

It would increase by a factor of 4.

• C.

It would decrease by a factor of 2.

• D.

The speed would not change.

• 5.
15. The law of planetary motion that relates the speed of a planet to its position in its orbit about the Sun is:
• A.

Kepler's first law

• B.

Kepler's third law

• C.

The Law of Equal Areas

• D.

The Law of Inertia Back to top