Thermal Transformation: Conduction, Convection and Radiation - 无忧得胜-网上国际课程 (5edu.win)

1#

96.05: When metal rod 1 is placed slr-sllskkv3 v356* p9z /m znin contact with metal rod 2, thermal energy flows from 1 to 2. A possible explanation is that 1 has a higher ___36z* v9 lsslmvkr5lnzs-pk/3 _ 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 quickly. Which /c9 -mfla. 5stta5fjd of the methods described provides the most sac55 t ./ad lfj9-mftrapid 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 doubles on the Kthq c *6mjc7k0elvin scale, by how much doeshmjkq6*tc 7c0 the 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 inv1gm is k59l0cq(rn v5sestigating “The transfer of energy that results from the bulk motion of a fluid.” Which of the following terms best describes the energy transfer method that this scientist is studk9 gm0ss q1 55cnrilv(ying?

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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 allowedsjr4sb.u1t 9m 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 s1 m9usjbrs.4t phere radiates energy at a rate P, at what rate will the larger sphere 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 calorimetr*im--e:ij(yc7w xk ffre e2/er, 20 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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