Unit-7 Density and Temperature
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Unit-7 Density and Temperature
Answer: At 0 K the molecules possess the minimum possible kinetic energy and stop moving at this point.
Answer: F = (9/5)C + 32 = (9/5)(50) + 32 = 122 degrees F.
Answer: F = (9/5)(35) + 32 = 63 + 32 = 95 degrees F.
Answer: Copper expands more than iron, so it becomes longer and lies on the outer, convex side of the curve.
Answer: Temperature is related to the average translational kinetic energy of the molecules of a body.
Answer: C = (5/9)(F - 32) = (5/9)(98.6 - 32) = 37 degrees C.
Answer: 98.6 degrees F = 37 degrees C, and K = 37 + 273 = 310 K.
Answer: Heat always flows from a hotter body to a colder body until thermal equilibrium is reached.
Answer: F = (9/5)(40) + 32 = 72 + 32 = 104 degrees F.
Answer: Water boils at 100 degrees C, the upper fixed point of the Celsius scale.
Answer: K = 20 + 273 = 293 K.
Answer: A thermometer measures the temperature of a body or the environment.
Answer: F = (9/5)(80) + 32 = 144 + 32 = 176 degrees F.
Answer: Expansion is proportional to the coefficient of expansion, so the rod with the larger alpha becomes longer.
Answer: On the Fahrenheit scale water boils at 212 degrees F.
Answer: C = 373 - 273 = 100 degrees C, the boiling point of water.
Answer: The clinical thermometer has a range of about 35 to 42 degrees C to cover human body temperatures.
Answer: The molecules of a gas are far apart and weakly bound, so gases expand more than liquids and solids.
Answer: Normal room temperature is about 25 degrees C, which equals 298 K.
Answer: The area coefficient is about twice the linear coefficient, beta = 2 alpha.