Venus has a higher average surface temperature than Mercury. Why?
A) because its surface is covered with hot lava from numerous active volcanoes
B) because its slow rotation gives it more time to heat up in sunlight
C) because it is closer to the Sun
D) because its surface is heated by an extreme greenhouse effect
D) because its surface is heated by an extreme greenhouse effect
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A piece of dirt falls from the bed of a moving truck. It strikes the ground directly below the end of the truck. (a) What is the direction of its velocity relative to the truck just before it hits? (b) Is this the same as the direction of its velocity relative to ground just before it hits? Explain your answers.
a. The velocity of the dirt is backward relative to the truck just before it hits the ground, (b) The velocity of the dirt is backward relative to the ground just before it hits the ground, b. The velocity of the dirt is backward relative to the truck just before it hits the ground, (b) The velocity of the dirt is forward relative to the ground just before it hits the ground, c. The velocity of the dirt is forward relative to the truck just before it hits the ground, (b) The velocity of the dirt is leftward relative to the ground just before it hits the ground,
Find Brewster's angle for light reflected from the top of a water surface (n = 1.33 )
A) 53.1° B) 36.9° C) 56.3° D) 60.2° E) 90.0°
A Carnot engine is operated as a heat pump to heat a room in the winter. The heat pump delivers heat to the room at the rate of 34 kJ per second and maintains the room at a temperature of 293 K when the outside temperature is 229 K
The power requirement for the heat pump under these operating conditions is closest to A) 7500 W. B) 6000 W. C) 17,000 W. D) 13,000 W. E) 9600 W.
Explain why equipotential surfaces are always perpendicular to the electric field vectors
What will be an ideal response?