At 20C, a brass cube has edge length 30 cm.What is the increase in the surface area when it is heated from 20C to 75C?

Q: How much heat is absorbed by an electric refrigerator in changing 2 kg of water at 150C to ice at…

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Q: 20 g of water at 800C is mixed with 20 g of honey at 60 oC in an insulated container. The final…

A: According to principle of calorimetry  Heat given by hot body = heat taken by cold body

Q: A 35 g glass tumbler contains 440 mL of water at 28° C. If four 21 g ice cubes each at a temperature…

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Q: A segment of a steel railroad track has a length of 50 m when the temperature is 20 0C. What is its…

A: Given data:  A segment of steel railroad track  Original Length (L0) = 50 m Initial temperature (Ti)…

Q: A circular hole in an aluminum plate is 2.725 cm in diameter at 0.000C.What is its diameter when…

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Q: How much heat is transferred to a 0.1kg sliver chain from the human body if it was at 25C and now…

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Q: The eye of a stove top has a total area of 0.0628 m2 and gives off energy at a rate of 8720 W. If we…

A: When we consider the top eye to be perfect blackbody, then we can use the relation U = sAT4 Where U…

Q: A copper bar is 1.0m long at an initial temperature of 22C.  By how many degrees would. It need to…

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Q: A sample of water that is initially at 84.0ºC absorbs 500 kcal of heat. As a result, the liquid…

A: Given that:- Initial temperature of water=80°C

Q: A quantity of steam (400 g) at 122c is condensed, and the resulting water is frozen into ice at 0c.…

A: The amount of heat removed is, Q=mcsteam∆T+mLV+mcwater∆T+mLf=mcsteam∆T+LV+cwater∆T+Lf

Q: What is the temperature of the mixture if 0.4 kg of water at 850C is added to 0.3 kg of water at…

A: According to the principle of calorimetry,  heat lost by the hot body = heat gained by the cold…

Q: The initial temperature of an object is 30°C. If the internal energy of the object doubles, what is…

A: Initial Temperature of the object is (Ti)=300 C Final Internal Energy = 2×Initial Internal energy

Q: The specific heat of copper is 385J/Kg/K. How much energy in Joules is need to heat up a 0.4 kg of…

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Q: An iron steam pipe is 200 ft long at 00What is the increase in length of the bar when heated to…

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Q: What is the temperature change of 1.0 mol of a monatomic gas if its thermal energy is increased by…

A: Given: To determine the temperature change of 1.0 mol of a monatomic gas if its thermal energy is…

Q: Following vigorous exercise, the body temperature of an 80.0-kg person is 40.0C. At what rate in…

A: The rate of reducing thermal energy can be determined as, P'=P+mCpT1-T2t

Q: A walrus transfers energy by conduction through its blubber at the rate of 150 W when immersed in…

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Q: An iron rod is heated from 32.00 oC to 182.0 oC. The initial length of the rod is 2235 cm. What is…

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Q: A hot (A)=202 g aluminum metal sample at 100°C was placed in an isolated calorimeter that contains…

A: mass of aluminum sample = 202 g initial temperature of Al sample = 100oC mass of calorimeter = 30 g…

Q: You cool a 100-g slug of red-hot iron (temperature 745 oC) by dropping it into an insulated cup of…

A: Given, Mass of slug (mslug)=100 g The temperature of slug Tslug= 745 degrees Mass of water (mw)=75 g…

Q: A 1kg lead bar at 80C is placed in 2 kg of water at 20C. What is the final temperature of the lead…

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Q: Q.3. When a rod of length 20 m and linear expansion coefficient a = 12 x 106 /K is subjected to a…

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Q: A brass rod is 0.5 m long at 20°c. What is the final length of the rod if it is heated to 50°c?

A: We have to use some basic formula here.

Q: A person's body temperature is 3.85°F above normal. How many degrees above normal is their body…

A: Given :  Temperature of the body = 3.85°F  above normal. Required : How many degrees normal is their…

Q: If 0.85km (at 0°) section of straight railroad track made of steel is assumed to behave as a single…

A: Given Data: The length of the section of railroad track is: L=0.85 km=0.85×103 m The initial…

Q: Two metal rods (steel and brass) are both 5.55m long at 20.00°C. The coefficient length expansion…

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Q: A 32.5-g iron rod, initially at 22.7 oC, is submerged into an unknown mass of water at 63.2 oC, in…

A: Mass of iron rod = 32.5 Initial temp of iron rod = 22.7°C Initial temperature of water = 63.2°C…

Q: A person uses a steel ball that will not fit through a steel ring unless the ring is heated. If the…

A: Given values: Diameter of the ball, dball=0.03 m Temperature of the ball, Tball=200 °C The…

Q: The specific heat of iron is 412J/Kg/K. How much energy in Joules is need to heat up a 0.2 kg of…

A: The energy required to raise the temperature of a substance of mass 'm' is given by the following…

Q: Lead pellets, each of mass 1.40 g, are heated to 200°C. How many pellets must be added to 546 g of…

A: When two objects or bodies with different temperatures come into contact, the heat transfers from…

Q: A metallic plate, 15 cm by 50 cm in size, is heated from 20⁰C to 220⁰C. If the plate is made of…

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Q: A 2 kg block is made of a metal that has higher specific heat than the metal out of which a 1 kg…

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Q: A walrus transfers energy by conduction through its blubber at the rate of 150 W when immersed in…

A: The rate of heat conduction is given by P=Qt=kA∆Td Rearranging the equation gives d=kA∆TP

Q: A 2.5 kg piece of aluminum is beated to 92.0°C and then dropped into 20.0 kg of water at 5.00°C.…

A: Given, Mass of aluminum,mAl=2.5 kg Mass of water,mw=20 kg Initial temperature of aluminum, T1=92°C…

Q: What is Ƴ if V = 0.250c ?

A: Given: The velocity is 0.250c.

Q: A 2m diameter disk made of brick fire30cm thick is in contact with a 3m x 2m insulating brick wall…

A: Given, Diameter of disc is 2 m.    Thickness of disc : 30 cm Area of wall is  3m * 2m  .  Thickness…

Q: A 3 g copper coin at 200C is dropped from a height of 300 m and strikes the ground. If 60% of the…

A: given : mass of copper coin, m = 3 g = 0.003 kg height, h = 300 m  Initial temperature, Ti = 20 °C

Q: How much ice at 0 0C is needed to lower the temperature of 100 g of water at 25 0C to 5 0C?

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Q: A aluminum Bar length 0.6 is heated from room temperature (22C) to 175. How much longer is the bar?

A: Given data:  Original Length (L0) = 0.6 m Initial temperature (T0) = 22 °C Final temperature (T) =…

Q: How much energy (in J) is required to evaporate 25% of 4g of water currently at 100 oC? The answer…

A: m=Mass of water=0.25×4=1 gLv=Latent heat of vaporization=2260×103 J/kg

Q: The expansion of a 30 cm metal is 0.075 cm when the temperature changes from 0⁰C to 100⁰C. Another…

A: When a material is heated the intermolecular spacing between molecules present in the material…

Q: Please I want answer of this question. Many Thanks   Note: Z is (27)

A: The given values are,

Q: How many grams of coffee must evaporate from 350 g of coffee in a 100-g glass cup to cool the coffee…

A: The specific heat of a substance is the heat required to raise the temperature of the unit mass of a…