If 500J of thermal energy is dissipated in 10s through a steel bar raising its temperature by 8K and the bar has a radius of 8 cm and thickness of 10cm what is the thermal conductivity of the steel bar

Q: Figure 7 shows the variation of temperature with time. If the mass of the metal is 7.5 kg. then the…

A: Given: Mass m=7.5 kg Rate of heat supplied Q=1000 Js-1

Q: The boiling point of the crystalline mass is

A: From the graph it can be inferred that initially the crystalline mass is in solid form. When it…

Q: What could be the applications of materials with high thermal capacity

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Q: copper telephone wire has essentially no sag between poles 35 m apart on winter day the temprature…

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Q: How much energy is needed to melt 1 kg of ice? Heat of Fusion of water is 333 kJ/kg, melting point…

A: Given: The mass of the ice is 1 kg. The latent heat of fusion is 333 kJ/kg.

Q: A 110.0 kg car with a speed of 62.5 km/h brakes to a stop. How many kcal of heat are generated by…

A: Mass of vehicle is  Speed of vehicle is Note:Find:Heat energy produced by brakes.

Q: The formation of condensation on a glass of ice water causes the ice to melt faster than it would…

A:

Q: What will be the final temperature is a 4 x 10⁷ J of heat is transferred to a 1kg block of aluminum…

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Q: An iron railroad rail is 104 m long temperature 25. What is its length when the Temperature is -13?…

A:

Q: A 1.0 kg metal head of a geology hammer strikes a solid rock with a velocity of 6.67 m/s. Assuming…

A: Initial Energy in hammer = kinetic energy of hammer. kinetic energy of hammer = m.v2/2 ........(i)…

Q: Radiant heat makes it impossible to stand close to a hot lava flow. Calculate the rate of heat loss…

A:

Q: A jeweler working with a heated 60g gold ring must lower the ring's temperature to make it safe to…

A: solution is given as

Q: What is likely to happen? A body at 20 ⁰C will cool when in contact with another body at 30 ⁰C A…

A: Whenever a hot body comes in contact with the cold body then heat transfers from hot body to cold…

Q: Thermal conductivity k (9%) Problem 10: Suppose a house's walls are 13 cm thick and and have an…

A: Given data: Thickness of the wall is, d= 13 cm = 0.13 m Average thermal conductivity of the wall is…

Q: 20 g of 60°C water is mixed with 100 g of 15 °C water. What is the final temperature after heat…

A:

Q: The melting point of aluminum is 660°C, its latent heat of fusion is 4.00 x 105 J/kg, and its…

A: Given that,Melting point = 660°CLatent heat of fusion = 4×105m = 500 (g)T = 27°CHere we need to find…

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: How much heat is required to melt 30kg of ice at 0 °C to water at 10 °C? The latent heat of ice to…

A: Here, the ice is at the melting point. First ice will completely converted into water at the melting…

Q: How much heat energy is required to raise the temperature of 0.367 kg of copper from 23.0 degrees…

A: According to  the given data  m = 0.367 kg   T1 =23 ° CT2 =60 ° Cas we know that specific heat of…

Q: To say that water has a high specific heat capacity is to say that water * absorbs little energy for…

A: Last option is correct.

Q: The temperature of an aluminum disk is increased by 120°C. By what percentage does its volume…

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Q: You place 2kg of ice into the cooler and it takes 30 minutes to melt. The surface area of the cooler…

A: From the given information at first, we have to find the heat required to melt the ice and that is…

Q: How much heat is needed to produce 13 J of energy from a heat en- gine with an efficiency of 0.3?

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Q: Rate of cooling of body is 0.5°C/min, when the system is 50°C above the surroundings. When a system…

A: This is a question based on Newton's Law of cooling: Newton's Law of cooling states that rate of…

Q: The ends of a cylindrical steel rod are Maintained at two different temperatures the rod conducts…

A:

Q: A small iron nail is out into a bucket of cool water. Which of the following is true? the decrease…

A: Heat flows from the high temperature to the low temperature. In this flow temperature of the body of…

Q: Calculate the amount of heat required to raise the temperature of 20 g of water vapor from 250°C to…

A: Given : mass of water vapor, m = 20 g = 20/1000 Kg = 0.02 Kg  Change in temperature , ∆T =…

Q: The mode of heat transfer that occurs when a fluid in motion comes into contact with a solid surface…

A: Convection

Q: The formation of condensation on a glass of ice water causes the ice to melt faster than it would…

A: Data provided in the question; Mass of condensation formed on the glass

Q: How much thermal energy must be removed from 0.96 kg of water at 0°C to make ice cubes at 0°C ?…

A: Given,mass of the water, m = 0.96 kgtemperature of the water, T = 0 °C = 273 Kice cube is at…

Q: Which of the following substances has the least average coefficient of linear thermal expansion?…

A: We need to comment on which of the listed substances has the least average value of coefficient of…

Q: A 0.03 kg lead bullet traveling 98 m/s strikes an armor plate and comes to stop. If all of the…

A: Given data:  Mass of lead bullet (m) = 0.03 kg Initial Velocity (v) = 98 m/s Final velocity = 0 m/s…

Q: In order to measure the transfer of thermal energy from one temperature body to another, what device…

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Q: What is the rate of heat loss through windows on a chilly-5 degree Celsius day from a typical house…

A: Area of windows (A) = 26 m2Thickness (d) = 4 mm inside temperature (T) = 20oC Outside temperature…

Calorimetry

Measuring the heat transferred during chemical reactions or other physical processes is known as calorimetry. It comes under the branch of thermochemistry.