On March 21, the Moon is in its first-quarter phase. An observer who sees this Moon on his or her meridian at this time
a. cannot see the Sun.
b. sees the Sun setting.
c. sees the Sun rising.
d. none of these
b
You might also like to view...
An astronaut in space swings a ball attached to a string in a circular motion. If the string suddenly breaks, how will the ball move?
A) It will move in a straight line in whichever direction it was moving when the string broke. B) It will continue to move in the same circular path it had been following before the string broke. C) It will instantly come to a stop. D) It will move toward the astronaut. E) It will move in a large elliptical path around the astronaut.
An object is being acted upon by three forces and moves with a constant velocity. One force is 60 N along the x-axis, the second is 75 N along a direction making a clockwise angle of 150° with the x-axis
What is the direction of the third force, measured clockwise from the x-axis? A) 164° B) 146° C) 236° D) 255° E) 262°
A spaceship approaches the earth with a speed 0.50c. A passenger in the spaceship measures his heartbeat as 70 beats per minute. What is his heartbeat rate according to an observer that is at rest relative to the earth?
A) 69 beats per minute B) 73 beats per minute C) 65 beats per minute D) 61 beats per minute E) 80 beats per minute
In another solar system, a planet has an airless moon Zygo that is 4.0 × 105 m in diameter. Experiments reveal that a freely falling object at the surface of Zygo accelerates at 0.20 m/s2. What is the mass of Zygo? (G = 6.67 × 10-11 N ? m2/kg2)
A) 2.4 × 1019 kg B) 4.8 × 1019 kg C) 1.2 × 1020 kg D) 2.4 × 1020 kg E) 4.8 × 1020 kg