Gravitational Potential Energy: In 1994, fragments of Comet P/Shoemaker-Levy 9 collided with Jupiter. Assume that these fragments came from very very far away with no initial speed, and neglect the effect of the sun. What was their speed when they neared Jupiter's surface at a distance of 71.4 × 106 m from its center? Jupiter has a mass of 1.90 × 1027 kg, and G = 6.67 × 10-11 N ? m2/kg2.
A. 10,400 m/s
B. 11,200 m/s
C. 35,500 m/s
D. 42,100 m/s
E. 59,600 m/s
Answer: E
You might also like to view...
A planetary nebula
a. produces an absorption spectrum. b. produces an emission spectrum. c. is contracting to form planets. d. is contracting to form a star. e. is the result of carbon detonation in a 1 Mo star.
Winds are generated on Earth primarily because of
a. strong updrafts from the equator and air sinking near the poles. b. uneven heating of the surface and rotation of the planet. c. water condensation onto mountains. d. hot air rising and cool air sinking.
Equal currents of magnitude I travel into the page in wire M and out of the page in wire N. Eight directions are indicated by letters A through H.
The direction of the magnetic field at point P is
A. C. B. E. C. F. D. G. E. H.
Which of the following statements about our Sun is not true?
A) The Sun contains more than 99% of all the mass in our solar system. B) The Sun is a star. C) The Sun's diameter is about 5 times that of Earth. D) The Sun is made mostly of hydrogen and helium.