When determining the specific heat of a metal specimen, why must the water in the inner cup be gently stirred before putting the metal specimen in it?

Q: Consider a cylinder with a length of 15 cm and a diameter of 10 cm. The cylinder has a surface…

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Q: When a solid body is heated, what happens to its mass and density?

A: Density = Mass/Volume   When a substance is heated its volume increases and so the density…

Q: Outdoors in winter, Why does a piece of metal feel colder than piece of wood?

A: Due to the thermal conductivity of the metal, the metal feels colder than the wood.

Q: When a body gains heat, there is always a rise in its temperature.  True or False

A: According to first law of thermodynamics , ∆Q = ∆U + W  Here ∆Q = heat change  ∆U = internal energy…

Q: Does a substance absorb or liberate any heat energy during the change of phase?

A: Phase transition is when a material transitions to a different state from a solid, liquid, or gas…

Q: Suppose 13.0 kg of 7.0°C water is mixed with 18.8 kg of 80°C water. If no heat is lost in this…

A: Given: Mass of the water = 13 kg Temperature = 70 C Mass of the water mixed = 18.8 kg The…

Q: Why is a calorimeter box made up of Copper?

A: A calorimeter box is made up of Copper because i) Cu has low SHC & thus it reaches the…

Q: Which has more heat: 1g of ice at 0 degree C or 1g of water at 0 degree C? Give reason.

A: Latent heat is the measure of the heat energy per mass released or absorbed during a phase change.

Q: A temperature difference of 1 degree Fahrenheit is also equal to a temperature difference of 1 on…

A: Given. Temperature difference=1°F 1°F=59 degree celcius A difference in 1 degree fahrenheit is same…

Q: The lower surface of a slab of stone of face-area 3600 cm and thickness 10 cm is exposed to steam at…

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Q: Calculate the latent heat of fusion of ice. 1.The inner cup of the calorimeter and the stirrer was…

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Q: How does specific heat of metal compare to that of water?

A: The expression to determine the specific heat will be,

Q: When you take a bath in 185 kg of water, how many kilograms of hot water (60.0°C) and cold water…

A: By condition, Again,

Q: If you leave a metal spoon propped up in a pot Is this Conduction, convection, or radiation

A: Conduction is transfer of heat energy through one medium to another through contact.

Q: How is heat capacity of a body related to specific heat capacity of its substance?

A: Heat capacity is defined as the heat required in raising the temperature of a substance by 1 degree…

Q: If the specific heat capacity of water were less, would a nice hot bath be a longer or shorter…

A: The formula of the specific heat:

Q: On a cold day, a piece of metal feels much colder to the touch than a piece of wood. This is due to…

A: From the above option which match nearly  Correct option is (b) specific heat .

Q: You apply a flame to 2 L of water for a certain time and its temperature rises by 1°C. If you apply…

A: We know,  Q = m*c*Δt Mass can further be represented in terms of volume as - Density = mass/volume.…

Q: Why is the water in the inner calorimeter cup gently stirred during an experiment determining the…

A: The specific heat of a substance is determined by the calorimetry experiments that involve an…

Q: A block of wood and steel is placed in a thermally stable room, which one has a lower temperature?,…

A: Wooden and steel block both are placed in a thermal stable room.

Q: If the amount of heat energy given to an iron rod is {53} calories, then its value in joules is.

A: The heat energy given to the iron rod is 53 cal. The energy in 1 cal is  41.184 J. The heat energy…

Q: Is metal a good heat shield?

A: heat shield means the protection form heat

Q: The primary method of heat transfer for liquid/gas (and plasma) is

A: the primary method of heat transfer for liquid/gas is convection.

Q: 18 grams of some unknown material is submerged in 325 grams of water initially at 16.8 °C. If the…

A: Given data The mass of the unknown material is mm = 18 g The mass of the water is mw = 325 g The…

Q: What examples of heat transfer by conduction, radiation, and convection do you encounter when using…

A: Heat transmission is a straightforward physical process. During the heat transmission process,…

Q: An aluminumn block, of mass 200 g and a temperature of 400°C, is dropped into an aluminum…

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Q: A platinum ball weighing 100 g is removed from a furnace and dropped into 400 g of water at 0°C. If…

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Q: A 0.250-kg block of a pure material is heated from 20.0C to 65.0C by the addition of 4.35 kJ of…

A: mass, m = 0.25 kg  T = 20 degree C  T' =  65 degree C  heat, H = 4.35 kJ

Q: A solid plate, with a thickness of 15 cm and a thermal conductivity of 80 W/m∙K, is being cooled at…

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Q: A 2.3-kg lead ball is placed in a 2.5-L insulated pail ofwater initially at 20.0°C. If the final…

A: The given data are as follows: Mass os the ball, mb = 2.3 kg Mass of the water, mw = 2.5 kg  ( 1…

Q: If the amount of heat energy given to an iron rod is {39} calories, then its value in joules is.

A: Given: The heat energy given to the iron rod is 39 cal.

Q: A circular pipe of OD 20 cm is enclosed centrally in a square section insulation of 36 cm side. The…

A: Given-Outer Diameter= 20cm or 0.2mSide of square section=36cm or 0.36mThermal Conductivity (K)…

Q: An insulated aluminum can whose mass is 0.20 kg contains 0.30 kg of water at 25 °C. A 0.10-kg metal…

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Q: Compare the rate of heat conduction through a 13.0-cm-thick wall that has an area of 10.0m2 and a…

A: The expression for rate of transfer energy through wall is  Pw=kwAw∆Ttw                   ...... (1)…

Q: Does a body at 0 degree C radiate any heat?

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Q: Which of the following is NOT type of heat transfer? O conduction radiation O insulation convection

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Q: Why is being burned by steam more damaging than being burned by water at the same temperature (100…

A: when the state of any matter changes from one state to another state  its temperature when the state…

Q: Why is it important to know the specific heat of materials? please explain

A: Specific heat capacity is a measure of the amount of heat energy required to change the temperature…

Q: You apply a flame to 1 L of water for a certain time and its temperature rises by 2°C. If you apply…

A: Q = m C dt  Q is the heat applied  m is the mass / quantity of the material C is the specific heat…

Q: Compare the rate of heat conduction through a 13.0-cmthick wall that has an area of 10.0 m2 and a…

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Q: In terms of heat flow, explain why silverware feels cold to touch?

A: Answer:-  Metal(silverware) feels cold because it conducts heat extremely well.  Since room…

Q: ) Gold has a specific heat of 130 J/kg X, and wood has a specific heat of 1 300 J/kg-K. If a piece…

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