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1) Answer the following questions A. Which statement below is false for planetar

ID: 3160899 • Letter: 1

Question

1) Answer the following questions

A. Which statement below is false for planetary motion?

A planet has greater speed at aphelion that at perihelion

The radius vector from the planet to the sun sweeps out equal area in equal time

The orbit is elliptical with the sun at one of the foci.

The square of the period of orbit is proportional to the cube of the semi-major axis

B. Sam leaves Venus in a spaceship to Mars and passes Sally, who is on Earth, with a relative speed of 0.90c . They both measure the time for the voyage. Which of the statements below are true?

A. Sam measures the proper time.

B. Sally measure the proper time.

C. Sam’s measurement of the distance traveled is less.

D. Sally’s measurement of the distance traveled is less.

E. Both measure the same distance traveled.

F. Sally says the trip takes longer than Sam.

A, D, E

B, D, E

B, D, F

A, C, F

1.

A planet has greater speed at aphelion that at perihelion

2.

The radius vector from the planet to the sun sweeps out equal area in equal time

3.

The orbit is elliptical with the sun at one of the foci.

4.

The square of the period of orbit is proportional to the cube of the semi-major axis

Explanation / Answer

1

A planet has greater speed at aphelion that at perihelion - false

Remaining three are kepler thrnmd laws

2

.B, D, F

A planet has greater speed at aphelion that at perihelion - false

Remaining three are kepler thrnmd laws

2

.B, D, F