5.00 kg of some liquid at 10.0S1U1P1$\circ$S1S1P0C is mixed with 1.00 kg of the same liquid at 40.0S1U1P1$\circ$S1S1P0C.What is the final equilibrium temperature? Ignore any heat flow with the containers and/or surroundings.

A) 12.0S1U1P1$\circ$S1S1P0C B) 15.0S1U1P1$\circ$S1S1P0C C) 18.0S1U1P1$\circ$S1S1P0C D) 25.0S1U1P1$\circ$S1S1P0C A) 12.0S1U1P1$\circ$S1S1P0C B) 15.0S1U1P1$\circ$S1S1P0C C) 18.0S1U1P1$\circ$S1S1P0C D) 25.0S1U1P1$\circ$S1S1P0C

A block of aluminum with a mass of 2.6 kg is at 13S1U1P1$\circ$S1S1P0C and comes in contact with a hot block of copper with a mass of 10.2 kg at 93S1U1P1$\circ$S1S1P0C.What is the final temperature? (caluminum = 0.22 kcal/kgS1U1P1$\circ$S1S1P0C;ccopper = 0.093 kcal/kgS1U1P1$\circ$S1S1P0C)

A) 19S1U1P1$\circ$S1S1P0C B) 21S1U1P1$\circ$S1S1P0C C) 50S1U1P1$\circ$S1S1P0C D) 63S1U1P1$\circ$S1S1P0C E) 83S1U1P1$\circ$S1S1P0C A) 19S1U1P1$\circ$S1S1P0C B) 21S1U1P1$\circ$S1S1P0C C) 50S1U1P1$\circ$S1S1P0C D) 63S1U1P1$\circ$S1S1P0C E) 83S1U1P1$\circ$S1S1P0C

A) temperature. B) thermodynamic work. C) change in internal energy. D) None are correct. A) temperature. B) thermodynamic work. C) change in internal energy. D) None are correct.

A container holding 0.25 kg of water at 20.0S1U1P1$\circ$S1S1P0C is placed into the freezer.How much energy must be removed from the water to turn it into ice?

A) 104 kJ B) 83.5 kJ C) 20.9 kJ D) 15.2 kJ E) 3.58 kJ A) 104 kJ B) 83.5 kJ C) 20.9 kJ D) 15.2 kJ E) 3.58 kJ

A copper sheet of area is bonded to an unknown metal sheet of area .The thickness of the unknown metal is half that of the copper.The outside surface of the copper sheet is held at a temperature of 80S1U1P1$\circ$S1S1P0C and the unknown metal sheet at 40S1U1P1$\circ$S1S1P0C.If the temperature of the copper-unknown metal interface is 60S1U1P1$\circ$S1S1P0C,what is the thermal conductivity of the unknown metal?

A) 386 W/(m*K) B) 193 W/(m*K) C) 258 W/(m*K) D) 772 W/(m*K) E) 220 W/(m*K) A) 386 W/(m*K) B) 193 W/(m*K) C) 258 W/(m*K) D) 772 W/(m*K) E) 220 W/(m*K)

A copper sheet of area is bonded to an aluminum sheet of area .Both sheets have the same thickness.The outside surface of the copper sheet is held at a temperature of 80S1U1P1$\circ$S1S1P0C and the aluminum sheet at 40S1U1P1$\circ$S1S1P0C.What is the temperature of the copper-aluminum interface?

A) 48S1U1P1$\circ$S1S1P0C B) 65S1U1P1$\circ$S1S1P0C C) 70S1U1P1$\circ$S1S1P0C D) 52S1U1P1$\circ$S1S1P0C E) 60S1U1P1$\circ$S1S1P0C A) 48S1U1P1$\circ$S1S1P0C B) 65S1U1P1$\circ$S1S1P0C C) 70S1U1P1$\circ$S1S1P0C D) 52S1U1P1$\circ$S1S1P0C E) 60S1U1P1$\circ$S1S1P0C

How much heat is required to turn a 1 kg cube of ice at -10S1U1P1$\circ$S1S1P0C to steam at 110S1U1P1$\circ$S1S1P0C?

A) 3013 kJ B) 3055 kJ C) 2260 kJ D) 2510 kJ E) 2817 kJ A) 3013 kJ B) 3055 kJ C) 2260 kJ D) 2510 kJ E) 2817 kJ

The power radiated by a black body (emissivity=1)of surface area 0.5 m2 is at a temperature of 40S1U1P1$\circ$S1S1P0C,while its surroundings are at a temperature of 20S1U1P1$\circ$S1S1P0C.What is the net power radiated by this object? (The Stefan-Boltzmann constant has a value of 5.67 * 10-8 W/m2 K4).

A) 32.2 W B) 63.2 W C) 112.2 W D) 253.1 W E) 273.1 W A) 32.2 W B) 63.2 W C) 112.2 W D) 253.1 W E) 273.1 W

Exam 18: Heat and the First Law of Thermodynamics

A scientist is performing a calorimetric test with an 800-g sample of an unknown substance.She finds that the sample absorbs 152 calories for every ºC it rises in temperature while in its solid phase.What might the substance be?

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Question 1

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When the volume of a thermodynamic system decreases,

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Question 2

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Seven liters of a fluid with a specific heat of 2.93 kJ/(kg * K)or 0.700 cal/(g * K)at 20^$\circ$C are mixed with three liters of the same fluid at 32^$\circ$C.Suppose that the fluid is insulated so that no energy can flow into it or out of it.What is the final temperature of the fluid? You do not know the density of the fluid,but you do know that the density is constant over this temperature range.

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Question 3

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An immersion heater with a power rating of 600 W is used to heat water.If the heater is placed in 1.9 L of water at room temperature (20^$\circ$C),what is the temperature of the water after 12 minutes?

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Question 4

A 2.00-g lead bullet is shot with a speed of 300 m/s into a wooden wall.Assume that all of its kinetic energy is absorbed by the bullet.Which statement is true? (The melting point of lead is 327^$\circ$C.)

(Multiple Choice)

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Question 5

A gas in a cylinder with a piston that slides freely within is adiabatically expanded from 1.5 to 1.7 m³.If the pressure exerted by the walls on its container during the expansion was 2.0atm,by what amount did the internal energy of the gas change during this expansion?

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Question 6

During his honeymoon trip in 1847 near the falls at Chamonix in the French Alps,Joule took along a thermometer to measure the temperature at the top and bottom of the falls 120 m high.He assumed the total kinetic energy of the water at the bottom becomes internal energy of the water.An estimate of the rise in temperature of the water of specific heat 4190 J/kg K at the bottom is

(Multiple Choice)

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Question 7

5.00 kg of some liquid at 10.0^$\circ$C is mixed with 1.00 kg of the same liquid at 40.0^$\circ$C.What is the final equilibrium temperature? Ignore any heat flow with the containers and/or surroundings.

(Multiple Choice)

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Question 8

A block of aluminum with a mass of 2.6 kg is at 13^$\circ$C and comes in contact with a hot block of copper with a mass of 10.2 kg at 93^$\circ$C.What is the final temperature? (c_aluminum = 0.22 kcal/kg^$\circ$C;c_copper = 0.093 kcal/kg^$\circ$C)

(Multiple Choice)

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Question 9

The work done per cycle by a gas following the pv trajectory of figure shown is 90 J.Determine the maximum pressure,P_max.

(Multiple Choice)

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Question 10

Heat is the same as

(Multiple Choice)

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Question 11

A container holding 0.25 kg of water at 20.0^$\circ$C is placed into the freezer.How much energy must be removed from the water to turn it into ice?

(Multiple Choice)

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Question 12

How much work is done per cycle by a gas following the pv trajectory of figure shown?

(Multiple Choice)

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Question 13

Assume that 10 g of steam is added to 100 g of water initially at 19^$\circ$C.The water is inside an aluminum cup of mass 35 g.The cup is inside a perfectly insulating calorimetric container that prevents heat flow from the outside environment.Find the final temperature of the water after equilibrium is reached. Specific heat of water: 4.19 kJ/(kg * K)or 1.00 cal/(g * K) Specific heat of aluminum: 922 J/(kg * K)or 0.22 cal/(g * K) Latent heat of fusion for water: 334 kJ/kg or 79.7 cal/g Latent heat of vaporization for water: 2260 kJ/kg or 539 cal/g

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Question 14

A copper sheet of area $A copper sheet of area is bonded to an unknown metal sheet of area .The thickness of the unknown metal is half that of the copper.The outside surface of the copper sheet is held at a temperature of 80 \circ C and the unknown metal sheet at 40 \circ C.If the temperature of the copper-unknown metal interface is 60 \circ C,what is the thermal conductivity of the unknown metal?$ is bonded to an unknown metal sheet of area $A copper sheet of area is bonded to an unknown metal sheet of area .The thickness of the unknown metal is half that of the copper.The outside surface of the copper sheet is held at a temperature of 80 \circ C and the unknown metal sheet at 40 \circ C.If the temperature of the copper-unknown metal interface is 60 \circ C,what is the thermal conductivity of the unknown metal?$ .The thickness of the unknown metal is half that of the copper.The outside surface of the copper sheet is held at a temperature of 80^$\circ$C and the unknown metal sheet at 40^$\circ$C.If the temperature of the copper-unknown metal interface is 60^$\circ$C,what is the thermal conductivity of the unknown metal?

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Question 15

For an adiabatic process,

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Question 16

A copper sheet of area $A copper sheet of area is bonded to an aluminum sheet of area .Both sheets have the same thickness.The outside surface of the copper sheet is held at a temperature of 80 \circ C and the aluminum sheet at 40 \circ C.What is the temperature of the copper-aluminum interface?$ is bonded to an aluminum sheet of area $A copper sheet of area is bonded to an aluminum sheet of area .Both sheets have the same thickness.The outside surface of the copper sheet is held at a temperature of 80 \circ C and the aluminum sheet at 40 \circ C.What is the temperature of the copper-aluminum interface?$ .Both sheets have the same thickness.The outside surface of the copper sheet is held at a temperature of 80^$\circ$C and the aluminum sheet at 40^$\circ$C.What is the temperature of the copper-aluminum interface?

(Multiple Choice)

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Question 17

How much heat is required to turn a 1 kg cube of ice at -10^$\circ$C to steam at 110^$\circ$C?

(Multiple Choice)

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Question 18

The power radiated by a black body (emissivity=1)of surface area 0.5 m² is at a temperature of 40^$\circ$C,while its surroundings are at a temperature of 20^$\circ$C.What is the net power radiated by this object? (The Stefan-Boltzmann constant has a value of 5.67 * 10^-8 W/m² K⁴).

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Question 19

A gas in a cylinder with a piston that slides freely within is adiabatically expanded from 1.5 to 1.7 m³.If the pressure exerted by the walls on its container during the expansion was 2.0 atm,what heat must have been supplied to the gas in order to affect this expansion?

(Multiple Choice)

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Question 20

Showing 1 - 20 of 67

Exam 18: Heat and the First Law of Thermodynamics

A scientist is performing a calorimetric test with an 800-g sample of an unknown substance.She finds that the sample absorbs 152 calories for every ºC it rises in temperature while in its solid phase.What might the substance be?

When the volume of a thermodynamic system decreases,

An immersion heater with a power rating of 600 W is used to heat water.If the heater is placed in 1.9 L of water at room temperature (20 ∘\circ∘ C),what is the temperature of the water after 12 minutes?

A 2.00-g lead bullet is shot with a speed of 300 m/s into a wooden wall.Assume that all of its kinetic energy is absorbed by the bullet.Which statement is true? (The melting point of lead is 327 ∘\circ∘ C.)

A gas in a cylinder with a piston that slides freely within is adiabatically expanded from 1.5 to 1.7 m3.If the pressure exerted by the walls on its container during the expansion was 2.0atm,by what amount did the internal energy of the gas change during this expansion?

5.00 kg of some liquid at 10.0 ∘\circ∘ C is mixed with 1.00 kg of the same liquid at 40.0 ∘\circ∘ C.What is the final equilibrium temperature? Ignore any heat flow with the containers and/or surroundings.

A block of aluminum with a mass of 2.6 kg is at 13 ∘\circ∘ C and comes in contact with a hot block of copper with a mass of 10.2 kg at 93 ∘\circ∘ C.What is the final temperature? (caluminum = 0.22 kcal/kg ∘\circ∘ C;ccopper = 0.093 kcal/kg ∘\circ∘ C)

The work done per cycle by a gas following the pv trajectory of figure shown is 90 J.Determine the maximum pressure,Pmax.

Heat is the same as

A container holding 0.25 kg of water at 20.0 ∘\circ∘ C is placed into the freezer.How much energy must be removed from the water to turn it into ice?

How much work is done per cycle by a gas following the pv trajectory of figure shown?

For an adiabatic process,

A copper sheet of area is bonded to an aluminum sheet of area .Both sheets have the same thickness.The outside surface of the copper sheet is held at a temperature of 80 ∘\circ∘ C and the aluminum sheet at 40 ∘\circ∘ C.What is the temperature of the copper-aluminum interface?

How much heat is required to turn a 1 kg cube of ice at -10 ∘\circ∘ C to steam at 110 ∘\circ∘ C?

The power radiated by a black body (emissivity=1)of surface area 0.5 m2 is at a temperature of 40 ∘\circ∘ C,while its surroundings are at a temperature of 20 ∘\circ∘ C.What is the net power radiated by this object? (The Stefan-Boltzmann constant has a value of 5.67 * 10-8 W/m2 K4).

A gas in a cylinder with a piston that slides freely within is adiabatically expanded from 1.5 to 1.7 m3.If the pressure exerted by the walls on its container during the expansion was 2.0 atm,what heat must have been supplied to the gas in order to affect this expansion?

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An immersion heater with a power rating of 600 W is used to heat water.If the heater is placed in 1.9 L of water at room temperature (20^$\circ$C),what is the temperature of the water after 12 minutes?

A 2.00-g lead bullet is shot with a speed of 300 m/s into a wooden wall.Assume that all of its kinetic energy is absorbed by the bullet.Which statement is true? (The melting point of lead is 327^$\circ$C.)

A gas in a cylinder with a piston that slides freely within is adiabatically expanded from 1.5 to 1.7 m³.If the pressure exerted by the walls on its container during the expansion was 2.0atm,by what amount did the internal energy of the gas change during this expansion?

5.00 kg of some liquid at 10.0^$\circ$C is mixed with 1.00 kg of the same liquid at 40.0^$\circ$C.What is the final equilibrium temperature? Ignore any heat flow with the containers and/or surroundings.

A block of aluminum with a mass of 2.6 kg is at 13^$\circ$C and comes in contact with a hot block of copper with a mass of 10.2 kg at 93^$\circ$C.What is the final temperature? (c_aluminum = 0.22 kcal/kg^$\circ$C;c_copper = 0.093 kcal/kg^$\circ$C)

The work done per cycle by a gas following the pv trajectory of figure shown is 90 J.Determine the maximum pressure,P_max.

A container holding 0.25 kg of water at 20.0^$\circ$C is placed into the freezer.How much energy must be removed from the water to turn it into ice?

How much heat is required to turn a 1 kg cube of ice at -10^$\circ$C to steam at 110^$\circ$C?

The power radiated by a black body (emissivity=1)of surface area 0.5 m² is at a temperature of 40^$\circ$C,while its surroundings are at a temperature of 20^$\circ$C.What is the net power radiated by this object? (The Stefan-Boltzmann constant has a value of 5.67 * 10^-8 W/m² K⁴).

A gas in a cylinder with a piston that slides freely within is adiabatically expanded from 1.5 to 1.7 m³.If the pressure exerted by the walls on its container during the expansion was 2.0 atm,what heat must have been supplied to the gas in order to affect this expansion?