Chapter 20: Q.30 (page 567)
What is the thermal energy of aluminum at ?
Short Answer
The thermal energy of aluminum at is
Chapter 20: Q.30 (page 567)
What is the thermal energy of aluminum at ?
The thermal energy of aluminum at is
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Get started for free9. Suppose you place an ice cube in a beaker of room-temperature water, then seal them in a rigid, well-insulated container. No energy can enter or leave the container.
a. If you open the container an hour later, will you find a beaker of water slightly cooler than room temperature, or a large ice cube and some steam?
b. Finding a large ice cube and some steam would not violate the first law of thermodynamics. and because the container is sealed, and because the increase in thermal energy of the water molecules that became steam is offset by the decrease in thermal energy of the water molecules that turned to ice. Energy would be conserved, yet we never see an outcome like this. Why not?
At what pressure will the mean free path in room-temperature nitrogen be ?
A ball is at rest on the floor in a room of air at . Air is nitrogen and oxygen by volume.
a. What is the thermal energy of the air in the room?
b. What fraction of the thermal energy would have to be conveyed to the ball for it to be spontaneously launched to a height of ?
c. By how much would the air temperature have to decrease to launch the ball?
d. Your answer to part is so small as to be unnoticeable, yet this event never happens. Why not?
What are (a) the average kinetic energy and (b) the rms speed of a proton in the center of the sun, where the temperature is?
The number density in a container of neon gas is . The atoms are moving with an rms speed of . What are
(a) the temperature and
(b) the pressure inside the container?
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