In order to have a comet named after you, you have to
A) calculate its orbit and predict when it will return.
B) publish a picture of it in an astronomical journal.
C) be one of the first three discoverers who report it to the International Astronomical Union (IAU).
D) be a well-known astronomer.
E) be and do all of the above
C
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Astronomers can determine the mass of the Sun by applying Newton's modification of Kepler's Third law.
Answer the following statement true (T) or false (F)
A race car traveling at 100 m/s enters an unbanked turn of 400 m radius. The coefficient of (static) friction between the tires and the track is 1.1. The track has both an inner and an outer wall. Which statement is correct?
A. The race car will crash into the outer wall. B. The race car will crash into the inner wall. C. The car will stay in the center of the track. D. The car will stay in the center of the track if the driver speeds up. E. The car would stay in the center of the track if the radius were reduced to 200 m.
A speedy tortoise can run with a velocity of 10.0 cm/s and a hare can run 20.0 times as fast. In a race, they both start at the same time, but the hare stops to rest for 2.00 minutes. The tortoise wins by a shell (20.0 cm). What was the length of the race?
What will be an ideal response?
A heavy stone and a light stone are released from rest in such a way that the amount of gravitational potential energy of the system rock-Earth for each rock is the same just as they are released. Air resistance is negligibly small
Which of the following statements about these stones are correct? (There could be more than one correct choice.) A) The initial height of the light stone is greater than the initial height of the heavy stone. B) The stones must have been released from the same height. C) The stones both have the same speed just as they reach the ground. D) Just as it reaches the ground, the light stone is traveling faster than the heavy stone. E) The stones both have the same kinetic energy just as they reach the ground.