PHYSICS 1250 PACKAGE >CI<
PHYSICS 1250 PACKAGE >CI<
9th Edition
ISBN: 9781305000988
Author: SERWAY
Publisher: CENGAGE LEARNING (CUSTOM)
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Chapter 19, Problem 19.21P

(a)

To determine

The volume of turpentine overflows.

(a)

Expert Solution
Check Mark

Answer to Problem 19.21P

The volume of turpentine overflows is 99.4mL .

Explanation of Solution

Given info: The initial volume of aluminum cylinder and turpentine is 2.000L , the initial temperature is 20°C , and the final temperature in the cylinder is 80°C .

Formula to calculate the change in volume of aluminum cylinder is,

ΔVAl=VβAlΔT

Here,

βAl is the coefficient of volume expansion of aluminum.

ΔT is the temperature difference.

Formula to calculate the change in volume of turpentine is,

ΔVt=VβtΔT

Here,

βt is the coefficient of volume expansion of turpentine.

The relation between coefficient of volume expansion of aluminum and coefficient of linear expansion of aluminum is,

βAl=3αAl (2)

Here,

αAl is the coefficient of linear expansion of aluminum.

The coefficient of linear expansion of aluminum is 24×106(°C)1 .

Substitute 24×106(°C)1 for αAl in the above equation.

βAl=3(24×106(°C)1)=72×106(°C)1

Thus, the coefficient of volume expansion of aluminum is 72×106(°C)1 .

Write the expression for the temperature difference,

ΔT=TfTi

Substitute 20°C for Ti and 80°C for Tf in the above equation.

ΔT=80°C20°C=60°C

Thus, the temperature difference is 60°C .

Write the expression for overflow volume of the turpentine,

ΔV=ΔVtΔVAl

Substitute VβAlΔT for ΔVAl and VβtΔT for ΔV in the above equation.

ΔV=VβtΔTVβAlΔT=VΔT(βtβAl) (2)

The coefficient of volume expansion of turpentine is 9×104(°C)1 .

Substitute 72×106(°C)1 for βAl , 2.000L for V , 60°C for ΔT and 9×104°C1 for βt in the equation (2).

ΔV=(2.000L)(103cm31L)(9×104(°C1)72×106(°C1))(60°C)=99.4cm3×1mL1cm3=99.4mL

Conclusion:

Therefore, the volume of turpentine overflows is 99.4mL .

(b)

To determine

The volume of turpentine remaining in the cylinder at 80°C .

(b)

Expert Solution
Check Mark

Answer to Problem 19.21P

The volume of turpentine remaining in the cylinder at 80°C is 2.01L .

Explanation of Solution

Given info: The initial volume of aluminum cylinder and turpentine is 2.000L , the initial temperature is 20°C , and the final temperature in the cylinder is 80°C .

Write the expression for the new volume of turpentine in the cylinder,

Vnew=V(1+βtΔT)

The coefficient of volume expansion of turpentine is 9×104(°C)1 and from the part (a) the temperature difference is 60°C .

Substitute 2.000L for V , 9×104(°C)1 for βt and 60°C for ΔT in the above equation.

Vnew=(2.000L)[1+(9×104(°C)1)(60°C)]=2.01L

Conclusion:

Therefore, the volume of turpentine remaining in the cylinder at 80°C is 2.01L .

(c)

To determine

The distance for the cylinder’s rim does the turpentine surface recede.

(c)

Expert Solution
Check Mark

Answer to Problem 19.21P

The distance for the cylinder’s rim does the turpentine surface recede is 0.998cm .

Explanation of Solution

Given info: The initial volume of aluminum cylinder and turpentine is 2.000L , the final temperature is 20°C , and the initial temperature in the cylinder is 80°C .

Write the expression for the volume of the turpentine in the cylinder after it cools back to 20°C ,

V1=Vnew(1+βtΔT) (3)

Write the expression for temperature difference,

ΔT=T2T1

Here,

T2 is the final temperature.

T1 is the initial temperature.

Substitute 20°C for T2 and 80°C for T1 in the above equation.

ΔT=20°C80°C=60°C

Thus, the temperature difference is 60°C and from part (a) the volume of turpentine remaining in the cylinder at 80°C is 2.1L .

Substitute 60°C for ΔT , 2.1L for Vnew and 9×104°C1 for βt in the equation (3).

V1=(2.1L)(103cm31L)[1+(9×104°C1)(60°C)]=1900.17cm3

Write the expression for the percentage of cylinder that is empty at 20°C ,

%V=VV1V

Substitute 1900.17cm3 for V1 and 2.000L for V in the above equation.

%V=(2.0L)(103cm31L)1900.17cm3(2.0L)(103cm31L)=4.99%

The distance for the cylinder’s rim does the turpentine surface recede is,

4.99%(20.0cm)=0.998cm

Conclusion:

Therefore, the distance for the cylinder’s rim does the turpentine surface recede is 0.998cm .

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Chapter 19 Solutions

PHYSICS 1250 PACKAGE >CI<

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