What is unusual about the magnetosphere of Uranus?
a. It is extremely small for the size of the planet
b. It can only trap a limited number of radiation particles.
c. It has a corkscrew shape.
d. Its poles are reversed.
e. It has a bullet shape.
c
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Spectroscopic and eclipse duration observations of an eclipsing binary star can enable astronomers to calculate________ of its individual stars
a. the masses b. the sizes c. the masses and sizes d. neither masses nor sizes
On the planet Jupiter, a dropped object picks up a speed of 20 m/sec in one second. How fast will it be going at the end of 3 seconds of fall, neglecting "air" resistance on Jupiter?
A) 40 m/sec B) 80 m/sec C) 60 m/sec D) 180 m/sec E) 20 m/sec
A 2.0-kg object moving 5.0 m/s collides with and sticks to an 8.0-kg object initially at rest. Determine the kinetic energy lost by the system as a result of this collision
a. 20 J b. 15 J c. 30 J d. 25 J e. 5.0 J
Four different uses of lasers are __________, __________, __________, and __________,
Fill in the blank(s) with correct word