Answered: How much heat is required to melt a…

Science

Physics

How much heat is required to melt a 94.4 kg lead brick at its melting point of 328°C

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter19: Temperature

Section: Chapter Questions

Problem 19.5OQ: A temperature of 162F is equivalent to what temperature in kelvins? (a) 373 K (b) 288 K (c) 345 K...

See similar textbooks

Similar questions

A temperature of 162F is equivalent to what temperature in kelvins? (a) 373 K (b) 288 K (c) 345 K (d) 201 K (e) 308 K
Beryllium has roughly one-half the specific heat of water (H2O). Rank the quantities of energy input required to produce the following changes from the largest to the smallest. In your ranking, note any cases of equality, (a) raising the temperature of 1 kg of H2O from 20C to 26C (b) raising the temperature of 2 kg of H2O from 20C to 23C (c) raising the temperature of 2 kg of H2O from 1C to 4C (d) raising the temperature of 2 kg of beryllium from 1C to 2C (e) raising the temperature of 2 kg of H2O from -1C to 2C
What is the minimum amount of energy required to completely melt a 7.25kg lead brick which has a starting temperature of -18.0°C? The melting point of lead is 328°C. The specific heat capacity of lead is 128 J/kg.Cº. The latent heat of fusion of lead is 23200 J/kg. 1.20 x 10^5 J 4.56 x 10^5 J 4.89 x 10^5 J 2.88 x 10^5 J
Lead is a soft, dense metal with melting point of 328°C, a heat of fusion of 5.5 kcal/kg, and a specific heat of 0.028 kcal/(kg.°C). How much total heat (in kcal) must be provided to melt a 1.93 kg sample of lead with an initial temperature of 46.2°C?
The average thermal conductivity of the walls (including windows) and roof of a house in the figure shown below is 4.8 10-4 kW/m · °C, and their average thickness is 20.8 cm. The house is heated with natural gas, with a heat of combustion (energy given off per cubic meter of gas burned) of 9,300 kcal/m3. How many cubic meters of gas must be burned each day to maintain an inside temperature of 25.9°C if the outside temperature is 0.0°C? Disregard surface air layers, radiation, and energy loss by heat through the ground. m3 A house has a rectangular base and a roof that peaks along a line above the center of the house and parallel to the length of the house. This roof slopes downward from the peak to each edge at an angle of 37.0° with the horizontal. The length of the front of the house is 10.0 meters. The width of the house is 8.00 meters. The height from the front of the house up to the edge of the roof is 5.00 meters.
314.0 kg copper bar is put into a smelter for melting. The initial temperature of the copper is 299.0 K. How much heat in kilojoules must the smelter produce to completely melt the copper bar? (The specific heat for copper is 386 J/kg•K, the heat of fusion for copper is 205 kJ/kg, and its melting point is 1357 K.)
A 76 g copper calorimeter (c = 385 J/kg·°C) contains 270 g of water (c = 4184 J/kg·°C)at 12°C. When 233 g of an alloy at 194°C is dropped into the calorimeter, the resulting temperature is 35°C. What is the specific heat of the alloy? (Note: both the calorimeter and the water will gain heat while the alloy will lose heat)
A glass container has a total wall area (including the lid) of 1.75 m and a wall thickness of 1.5 cm. It's filled with 1000 g of ice at 0 C. How many seconds will it take to completely melt all the ice? (Latent heat of fusion is 80 cal/g and Thermal conductivity of glass is 0.8 WIim K) O 120 s O 14, 400 s O 2, 800 s O 200 s
A 0.045-kg ice cube at -30.0°C is placed in 0.405 kg of 35.0°C water in a very well-insulated container. The latent heat of fusion for water is Lf = 79.8 kcal/kg. What is the final temperature of the water, in degrees Celsius? Tf =
AT vs. Q 40 35 30 25 550 600 650 700 750 800 Q (J) Use the given graph and the equation ( o= m C AT ) to answer the following: + °C/J A J/kg°C The slope of the given graph = The specific heat capacity (C) = (ɔ) V
A brass boiler has a base area of 0.15 m2 and thickness 1.0 cm. It boils water at the rate of 6.0 kg/min when placed on a gas stove. Estimate the temperature of the part of the flame in contact with the boiler. Thermal conductivity of brass=109 J s-1 m-1 K-1 ; Heat of vaporisation of water =2256×103 J kg-1
The glass of a window has an area of 1.0 m² and is 0.5 cm thick. If the indoor temperature is 20ºC and the outdoor temperature is 5°C, what is the rate of heat flow through this window? [k(glass) = 0.84 J/s.m.°C] 2500 J/s 630 J/s O 1300 J/s O 50,000 J/s