Thermal Transformation: Conduction, Convection and Radiation

1#

96.05: When metal rod 1 isjo *8k(avga4 c placed in contact with metal rod 2, thermal energy flows from 1 to 2. A possible explanation is that 1 has a v4(8ga co*kjahigher ____ than 2

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2#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

06.27: A frozen hamburger in plastic needs to be thawed qu+ix* xnju6/p6tamb22,gnurp ickly. Which of the metho* ipu xtn gp/26x,b6ju2 m+nards described provides the most rapid thawing of the burger?

A. Place the burger itself in a metal pan at room temperature.

B. Place the burger in its package on the kitchen counter at room temperature.

C. Place the burger in its package in a pot of non-boiling warm water.

D. Place the burger itself on a plastic plate in the refrigerator.

E. Place the burger itself on the ceramic kitchen counter at room temperature.

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3#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

07.45: If the temperature of a material doublep z;lgd)g7 pb3s on the Kelvin scale, by how much does the zp3g)p bd7lg;time-rate at which energy is radiated from the material change?

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4#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

09.19: A scientist claims to be investigatilgg, wg 6/y6ijng “The transfer of energy that results from the bulk motion of a flu jggwli6,6 yg/id.” Which of the following terms best describes the energy transfer method that this scientist is studying?

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5#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

10.41/18.50: Two spheres are heated to the same temperature and allowe9 *lu:ptq j0 d4qzy.clenv:y )d to radiate energy to identical surroundings. The spheres have the same emissivity, but one sphere has twice the diameter of the other. If the smaller sphere radiates energy at a rate P, at what rate will the larger sp4p:j0l n9zve tuyqcq):yl. *dhere radiate energy?

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6#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

08.22: In a calorimeter, us3lcphjn1o3c 3. n4 t20 grams of liquid water at $100^{\circ}C$ is mixed with 50 grams of water vapor at $100^{\circ}C$. The system is allowed to come to equilibrium. Assuming that the calorimeter and the surroundings can be ignored, which of the following best describes the net energy exchange between the vapor and the liquid during the process of coming to equilibrium?

A. There is no net energy exchange.

B. Energy is transferred from the vapor to the liquid, vaporizing some of the liquid

C. Energy is transferred from the vapor to the liquid, increasing the liquid’s temperature.

D. Energy is transferred from the vapor to the liquid until all of the liquid vaporizes.

E. Energy is transferred from the liquid to the vapor, condensing some vapor

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