A 50 gram chunk of steel initially at a temperature of 80 degree C is dropped in

Question

A 50 gram chunk of steel initially at a temperature of 80 degree C is dropped into an insulated container with 50 gram of ethanol. The initial temperature of the ethanol is 20 degree C. Assume that the system is insulated so that no the escapes to the environment. When the two materials reach thermal equilibrium, the final temperature of the combined materials will be a. 50 degree b. More than 50 degree C is c. Less than 50 degree c is Which of the following is method of heat transport that involves the movement of warm molecules of liquid from one region to another? a. Convection b. Conduction c. Radiation How much will a 12.0m steel rod lengthen when the temperature changes from 15 degree C to 25 degree C? a. 1.20 times 10^-4 m b. 1.8 times 10^-4 m c. 1.56 times 10^-3 m How much heat is required to raise the temperature of water from 20 degree C to 50 degree C? a. 4000 calories b. 10000 calories c. 6000 calories

Explanation / Answer

6) True

7) option c)

8) option a)

9) option a)

11) option c)

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