What is a magnetosphere?
A) a region of space around a planet in which the planet's magnetic field can trap charged particles
B) the layer of a planet in which its magnetic field is generated
C) the uppermost layer of any planetary atmosphere
D) the region in a planet's atmosphere in which auroras occur
A) a region of space around a planet in which the planet's magnetic field can trap charged particles
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The resistance of a wire can be increased by
a. making the wire longer. b. lowering the temperature of the wire. c. making the wire thinner. d. making the wire shorter.
How much kinetic energy does a 0.30-kg stone have if it is thrown at 44m/s
A) 290 J B) 580 J C) 440 J D) 510 J
The direction of the rotation of Venus is exceptional because it is in a(n) ________ direction
Fill in the blank(s) with correct word
How many joules of energy are used by a 1.0-hp motor that runs for 1.0 hour? (1 hp = 746 W)
A) 3.6 kJ B) 2.7 MJ C) 45 kJ D) 4.8 J