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Question
On a nice winter day at the South Pole, the temperature rises to −34°F.
What is the approximate temperature in degrees Celsius?
Question
A modern-day zeppelin holds 9,710 m3 of helium. Compute its maximum payload at sea level. (Assume the helium and air to be at 0°C and 1 atm.)
Question
A metal bowl with a weight of 1.45 N is placed in a larger kitchen container filled with castor oil. How much castor oil must the bowl displace in order to float? For reference, the mass density of castor oil is about 961 g/liter and its weight density is about 9.42 N/liter. Please give your answer in liters.
Question
A sonic depth gauge is placed 5.8 m above the ground. An ultrasound pulse sent downward reflects off snow and reaches the device 0.030 seconds after it was emitted. The air temperature is −20°C.
How far (in m) is the surface of the snow from the device? (Round your answer to at least three significant figures.)
m
How deep (in m) is the snow?
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