The ultimate fate of our Sun is to ________
A) become a white dwarf that will slowly cool with time
B) become a rapidly spinning neutron star
C) become a black hole
D) explode in a supernova
A
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A satellite that weighs 4900 N on the launchpad travels around the earth's equator in a circular orbit with a period of 1.667 h
The earth's mass is 5.97 × 1024 kg, its equatorial radius is 6.3 × 106 m, and G = 6.67 × 10-11 N ? m2/kg2. (a) Calculate the magnitude of the earth's gravitational force on the satellite. (b) Determine the altitude of the satellite above the Earth's SURFACE.
In which part of the ear is the cochlea?
a. outer ear b. middle ear c. inner ear d. ear canal
Color is a reliable physical property to use for mineral identification
TRUE FALSE
The combined mass of all the asteroids in the asteroid belt is
A) less than that of any terrestrial planet. B) about the same as that of Earth. C) about twice that of Earth. D) about the same as that of Jupiter. E) more than that of all the planets combined.