How much heat, in joules, is required to convert 1.00 kg of ice at 0°C into steam at 100°C? (LF,ice = 333 J/g; LV,steam = 2.26 × 10^3 J/g.)
a. 3.35 × 10^5
b. 4.19 × 10^5
c. 2.36 × 10^6
d. 2.69 × 10^6
e. 3.01 × 10^6
e
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In a parallel universe, there is a planet with the same mass and radius as Earth. However, when an apple is dropped on this planet, it fall with an acceleration of 5 (meters per second) per second. The value of G in this parallel universe is
A. the same as it is in our universe B. twice as large as it is in our universe C. half as large as it is in our universe D. four times as large as it is in our universe
A model car is propelled by a cylinder of carbon dioxide gas. The cylinder emits gas at a rate of 5.00 g/s with an exit speed of 80.0 m/s. The car has a mass of 455 g, including the CO2 cylinder. Starting from rest, what is the car's initial acceleration?
a. 0.879 m/s2 b. 40.0 m/s2 c. 36.4 m/s2 d. 7.28 m/s2 e. 1.38 m/s2
Two bodies of equal mass m collide and stick together. The quantities that always have equal magnitude for both masses during the collision are
A. their changes in momentum. B. the force each exerts on the other. C. their changes in kinetic energy. D. all of the above. E. only (a) and (b) above.
What is the significance of the Tully-Fisher relation?