A 5-kg piece of lead (specific heat 0.03 cal/g/°C) having a temperature of 80°C is added to 500 g of water having a temperature of 20°C. What is the final equilibrium temperature (in °C) of the system?
a. 79
b. 26
c. 54
d. 34
e. 20
d
Physics & Space Science
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a. burning fossil fuel b. digestive processes in cows c. automobile pollution d. all of the above
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Which of the following is not a general feature of the Moon's surface?
a. Dry ocean plains b. Multiring basins c. Secondary craters d. None of these; that is, all these features are present
Physics & Space Science
Doubling the current, number of turns, the area, and the ambient magnetic field for a coil changes the maximum torque it experiences by what factor?
A. 2 B. 4 C. 8 D. 16 E. 32
Physics & Space Science