Consider a situation where you carry a 20-N box up a flight of stairs, raising its elevation by 5 m.You drop the box. As it falls to its original level, its kinetic energy is __________
Fill in the blank(s) with correct word
100 J
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Which planet is able to retain the largest (by radius and by volume)atmosphere?
a) Mars b) Jupiter c) Earth d) Venus e) Mercury
A charged particle q, traveling through a magnetic field, has the force FB acting upon it. Another particle with charge equals to –2q will have the same force acting upon it if
1.it moves at half the velocity in the opposite direction. 2.it moves at twice the velocity in the opposite direction. 3.it moves at half the velocity in the same direction. 4.it moves at twice the velocity in the same direction.
Meandering streams are common in
A) V-shaped valleys. B) natural levees. C) flat floodplain areas. D) areas of accumulation.
A helium-filled balloon has a volume of 1 m3 . As it rises in the earth's atmosphere, its volume expands. What will its new volume be (in m3) if its original temperature and pressure are 20°C and 1 atm, and its final temperature and pressure are ?40°C and 0.1 atm?
a. 4 b. 6 c. 8 d. 10 e. 1.5