In composition, the ________ planets have rocky materials like the asteroids
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terrestrial
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Compared to the distance between Earth and Mars, the distance between Jupiter and Saturn is
A) about the same. B) much larger. C) much smaller. D) just slightly less.
A 200-g metal container, insulated on the outside, holds 100 g of water in thermal equilibrium at 22.00°C
A 21-g ice cube, at the melting point, is dropped into the water, and when thermal equilibrium is reached the temperature is 15.00°C. Assume there is no heat exchange with the surroundings. For water, the specific heat is 4190 J/kg • K and the heat of fusion is 3.34 × 105 J/kg. The specific heat for the metal is closest to A) 3850 J/kg ? K. B) 2730 J/kg ? K. C) 4450 J/kg ? K. D) 4950 J/kg ? K. E) 5450 J/kg ? K.
Two point charges of values +2.0 and +5.5 ?C, respectively, are separated by 0.50 m. What is the potential energy of this 2-charge system? (ke = 8.99 × 10^9 N?m2/C2)
a. +0.50 J b. ?0.20 J c. +0.20 J d. ?0.41 J e. +0.41 J
A person runs up a long flight of stairs in 10 seconds. If the person's weight is 600 N and the vertical height of the stairs is 20 meters, the person's power output is __________
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