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 pla.z.9 gndp b9r+tat vl1ced in contact with metal rod 2, thermal energy flows from 1 to 2. A possible explanation bl+9.zr9tpd ag.tn1 v is that 1 has a higher ____ 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 )09qfg/r uzc0bra 8i g8x5uxkthawed quickly. Which of the methods described provides the most rapid thawing of the g5zbx a k8uuic0)fg9/r xq0r8 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 Kelvin scale, by hhcd93 uyxy 5s2u 6q9 ,slld*mcow much does the time-rate at which energy is radix9ydqu*lsld93 uym2c sh c6,5ated 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 investigating “The transfer of energy that resnlhqd2.edremb e (:d0u6 ,/2ftwpdu5ults from the bulk motion of a fluid.” Which of the following.rn( dlwmdh /56ddf u2tbe:ee20uqp , 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 t6a 5ko bx.pn9b frl3m:qt )bl3he same temperature and allowed 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 radiatetofbl) 39:ba 3mx6bn 5kplr q.s 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 calorimeter, 20 grams of lqj 6n.p 3yc5i.jz q3i+hrb6mg iquid 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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