A circular orbit would have an eccentricity of

A) 0.
B) between 0 and 0.5.
C) between 0.5 and 1.
D) exactly 1.0.
E) infinity.


A

Physics & Space Science

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A 0.30-kg mass is suspended on a spring. In equilibrium the mass stretches the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and released from rest. Write down its equation of motion

A) y = (0.01 m) cos (22.1 t) B) y = (0.01 m) sin (22.1 t) C) y = (0.03 m) cos (22.1 t) D) y = (0.03 m) sin (22.1 t)

Physics & Space Science

An aluminum beam (E 5 72 GPa) with a square cross section and span length L 5 2.5 m is subjected to uniform load q 5 1.5 kN/m. The allowable bending stress is 60 MPa. The maximum deflection of the beam is approximately:


(A) 10 mm
(B) 16 mm
(C) 22 mm
(D) 26 mm

Physics & Space Science

Despite being only a medium-size moon, Enceladus may have subsurface habitable zones

Indicate whether the statement is true or false

Physics & Space Science

On which planet does plate tectonics take place?

A. Venus B. Mars C. Mercury D. Earth

Physics & Space Science