If a pizza absorbs more energy than it emits, its temperature
A) decreases.
B) is unaffected.
C) increases.
D) none of the above
Answer: C
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Why doesn't Mars have a stratosphere?
A) It is too far from the Sun. B) Its atmosphere does not contain enough of an ultraviolet-absorbing gas. C) Its atmosphere does not contain enough greenhouse gases. D) It is too small in size. E) It lacks a strong enough magnetic field.
If a million asteroids 1-kilometer across were all combined into one object, how big would it be across? (Hint: You can assume that both asteroids and the final object are spherical. The equation for the volume of a sphere is 43?r3 where r is the radius.)
If a million asteroids 1-kilometer across were all combined into one object, how big would it be across? (Hint: You can assume that both asteroids and the final object are spherical. The equation for the volume of a sphere is 43?r3 where r is the radius.)
Astronomers consider the Solar System's Kuiper belt extending beyond the orbit of Neptune as an example of an old debris disk
a. True b. False Indicate whether the statement is true or false
Calorimetry: A 90-g aluminum calorimeter contains 390 g of water at an equilibrium temperature of 20°C. A 160-g piece of metal, initially at 305°C, is added to the calorimeter. The final temperature at equilibrium is 32°C. Assume there is no external heat exchange. The specific heat capacities of aluminum and water are 910 J/kg ? K (aluminum) and 4190 J/kg ? K (water). What is the specific heat capacity of the 160-g piece of metal?
A. 470 J/kg ? K B. 430 J/kg ? K C. 350 J/kg ? K D. 310 J/kg ? K E. 510 J/kg ? K