Which of the following is the origin of most of the large moons around the jovian planets?
A) They are captured asteroids.
B) They are captured comets.
C) They are captured planets.
D) They were formed by condensation and accretion in a disk of gas around the planet.
E) They were formed by giant impacts.
D) They were formed by condensation and accretion in a disk of gas around the planet.
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Suppose a lone asteroid happens to be passing relatively near Jupiter (but not near any of its moons), following a hyperbolic orbit as it approaches Jupiter. Which of the following statements would be true?
A) Jupiter's gravity would capture the asteroid, making it a new moon of Jupiter. B) The asteroid's orbit around Jupiter would not change, and it would go out on the same hyperbolic orbit that it came in on. C) Jupiter would probably expel the asteroid far out into the solar system. D) The asteroid would slowly spiral into Jupiter until it crashed into the atmosphere. E) Any of these scenarios is possible.
The oldest pulsars are billions of years old
a. True b. False Indicate whether the statement is true or false
A long solenoid has a radius of 4.0 cm and has 800 turns/m. If the current in the solenoid is increasing at the rate of 3.0 A/s, what is the magnitude of the induced electric field at a point 2.2 cm from the axis of the solenoid?
a. 3.3 × 10^?5 V/m b. 3.6 × 10^?5 V/m c. 3.9 × 10^?5 V/m d. 4.2 × 10^?5 V/m e. 6.0 × 10^?5 V/m
What evidence do we have that the Universe is expanding?
What will be an ideal response?