What is this object?

A) Ice particles and water vapor are spraying out from the surface.
B) A comet is impacting the surface.
C) Pebble-size particles from Saturn's rings are raining down onto the surface.
D) Sunlight is reflecting off clouds in Enceladus's atmosphere.


A) Ice particles and water vapor are spraying out from the surface.

Physics & Space Science

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The principal landform resulting from a stream's erosive power is its ______________-shaped valley

Fill in the blank(s) with correct word

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If a light bulb has half the resistance of a 50-W lightbulb, what would be its wattage? Assume both bulbs are attached to the same 120-V circuit

a. More information is needed. c. 200 W b. 25 W d. 100 W

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The Coriolis effect demonstrates that Earth spins.

Answer the following statement true (T) or false (F)

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A 480-kg car moving at 14.4 m/s hits from behind a 570-kg car moving at 13.3 m/s in the same direction

If the new speed of the heavier car is 14.0 m/s, what is the speed of the lighter car after the collision, assuming that any unbalanced forces on the system are negligibly small? A) 10.5 m/s B) 13.6 m/s C) 19.9 m/s D) 5.24 m/s

Physics & Space Science