An ice cube of mass 100 g and at 0°C is dropped into a Styrofoam cup containing 200 g of water at 25°C. (The latent heat of fusion of water is 80 cal/g and the specific heat capacity of water is 1.0 cal/g C°.) Assuming the cup does not exchange any heat with the outside, what will happen?
A. All of the ice will melt
B. Nothing will happen
C. All of the water will freeze
D. Some of the ice will melt
E. Some of the water will freeze
Answer: D
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What unit would best describe the linear diameter of a planetary body?
a. arc seconds b. arc minutes c. degrees d. kilometers e. radians
Rank these planets in order of the strength of the greenhouse effect on the planet, from the weakest to the strongest greenhouse effect.
A) Mars, Mercury, Earth, Venus B) Mercury, Venus, Earth, Mars C) Mercury, Earth, Mars, Venus D) Mercury, Mars, Earth, Venus E) Mars, Earth, Venus, Mercury
Compared to Jupiter, Saturn's atmosphere is:
A) more calm with fewer disturbances or storms. B) more uniform with no significant variation in color in the lower cloud levels. C) more violent with larger storm phenomena easily viewed from Earth. D) much thicker causing the visibility of the lower layers to be reduced. E) more colorful with variations in color easily viewed from Earth.
A car travels around an unbanked highway curve (radius 0.15 km) at a constant speed of 25 m/s. What is the magnitude of the resultant force acting on the driver, who weighs 0.80 kN?
a. 0.87 kN b. 0.34 kN c. 0.80 kN d. 0.00 kN e. 0.67 kN