The Physics of Everyday Phenomena
The Physics of Everyday Phenomena
8th Edition
ISBN: 9780073513904
Author: W. Thomas Griffith, Juliet Brosing Professor
Publisher: McGraw-Hill Education
Question
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Chapter 10, Problem 4SP

(a)

To determine

The amount of heat transferred from metal to water.

(a)

Expert Solution
Check Mark

Answer to Problem 4SP

The amount of heat transferred from metal to water is 2340cal.

Explanation of Solution

Given info: A 135g quantity of a certain metal, initially at 130°C , is dropped into an insulated beaker containing 90 g of water at 20°C . The final temperature of the metal and water in the beaker is 46°C.

Write the expression for heat in terms of specific heat capacity

Q=mcΔT (1)

Here,

Q is the heat

m is the mass

c is the specific heat capacity of ice

ΔT is the change in temperature

Write the expression for change in temperature

ΔT=T2T1 (2)

Here,

ΔT is the change in temperature

T1 is the initial temperature

T2 is the final temperature

Substitute equation (2) in (1)

Q=mc(T2T1) (3)

Substitute 90g for m, 1cal/g°C for c, 20°C for T1 and 46°C for T2 in equation (3)

Q=90g×1cal/g°C(46°C20°C)=2340cal

Conclusion:

The amount of heat transferred from metal to water is 2340cal.

(b)

To determine

The specific heat capacity of metal.

(b)

Expert Solution
Check Mark

Answer to Problem 4SP

The specific heat capacity of metal is 0.206cal/g°C.

Explanation of Solution

Write the expression for specific heat capacity of metal

c=Qm(T2T1)

Substitute 135g for m, 2340cal for Q, 130°C for T1, and 46°C for T2 in the above equation

c=2340cal135g(130°C46°C)=0.206cal/g°C

Conclusion:

The specific heat capacity of metal is 0.206cal/g°C.

(c)

To determine

The quantity of metal dropped into the insulating beaker.

(c)

Expert Solution
Check Mark

Answer to Problem 4SP

The quantity of metal dropped into the insulating beaker is 360g.

Explanation of Solution

Write the expression for heat in terms of specific heat capacity

Q=mcΔT (1)

ΔT is the change in temperature

Write the expression for change in temperature

ΔT=T2T1 (2)

Substitute equation (2) in (1)

Q=mc(T2T1) (3)

Substitute 90g for m, 1 cal/g°C for c, 20°C for T1 and 70°C for T2 in equation (3)

Q=90g×1cal/g°C(70°C20°C)=4500cal

Write the expression of mass in terms of specific heat capacity

m=QcΔT (4)

Substitute 0.206cal/g°C for c, 4500cal for Q, 130°C for T1 and 70°C for T2 in equation (4)

m=4500cal0.206cal/g°C×(130°C70°C)=364g360g

The negative sign in the above equation is avoided since mass is always a positive quantity.

Conclusion:

The quantity of heat was dropped from metal to insulating beaker is 360g.

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Chapter 10 Solutions

The Physics of Everyday Phenomena

Ch. 10 - Two cities, one near a large lake and the other in...Ch. 10 - Is it possible to add heat to a substance without...Ch. 10 - What happens if we add heat to water that is at...Ch. 10 - What happens if we remove heat from water at 0C?...Ch. 10 - What does it mean for a liquid to be supercooled?...Ch. 10 - Prob. 16CQCh. 10 - Would a PCM (phase-change material) be useful in a...Ch. 10 - Is it possible to change the temperature of a...Ch. 10 - A hammer is used to pound a piece of soft metal...Ch. 10 - Which represents the greater amount of energy, 1 J...Ch. 10 - Prob. 21CQCh. 10 - Is it possible for the internal energy of a system...Ch. 10 - Based upon his experiments, Joule proposed that...Ch. 10 - An ideal gas is compressed without allowing any...Ch. 10 - Is it possible to decrease the temperature of a...Ch. 10 - Heat is added to an ideal gas, and the gas expands...Ch. 10 - Heat is added to an ideal gas maintained at...Ch. 10 - Prob. 28CQCh. 10 - Prob. 29CQCh. 10 - A block of wood and a block of metal have been...Ch. 10 - Heat is sometimes lost from a house through cracks...Ch. 10 - Is it possible for water on the surface of a road...Ch. 10 - What heat transfer mechanisms (conduction,...Ch. 10 - Prob. 34CQCh. 10 - How do we get heat from the sun through the...Ch. 10 - What property does glass share with carbon dioxide...Ch. 10 - Prob. 37CQCh. 10 - Will a solar power plant (one that generates...Ch. 10 - Prob. 1ECh. 10 - Prob. 2ECh. 10 - Prob. 3ECh. 10 - Prob. 4ECh. 10 - Prob. 5ECh. 10 - Prob. 6ECh. 10 - Prob. 7ECh. 10 - Prob. 8ECh. 10 - Prob. 9ECh. 10 - Prob. 10ECh. 10 - Prob. 11ECh. 10 - Prob. 12ECh. 10 - Prob. 13ECh. 10 - Prob. 14ECh. 10 - Prob. 15ECh. 10 - Prob. 16ECh. 10 - Prob. 17ECh. 10 - Prob. 18ECh. 10 - Prob. 1SPCh. 10 - Prob. 2SPCh. 10 - Prob. 3SPCh. 10 - Prob. 4SPCh. 10 - Prob. 5SPCh. 10 - Prob. 6SP
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