College Physics
College Physics
1st Edition
ISBN: 9781938168000
Author: Paul Peter Urone, Roger Hinrichs
Publisher: OpenStax College
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Chapter 14, Problem 29PE

Some gun fanciers make their own bullets, which involves melting and casting the lead slugs. How much heat transfer is needed to raise the temperature and melt 0.500 kg of lead, starting from 25 .0 ° C ?

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Problem 4. (a) How much heat transfer is necessary to raise the temperature of 0.800kg of water from 0°C to 30.0°C? (b) How much heat transfer is required to first melt 0.800kg of 0°C ice and then raise its temperature to 30.0°C? Hint: Look up the specific heat and heat of fusion of water.
There is a .32 kg block of silver that is 21 °C. If silver's melting point is 961°C, how much thermal energy would a scientist need to melt this block of silver? (Hf = 111 kJ/kg). Hf is the heat of fusion of silver! Solve, assuming that the specific heat of silver is .24 J/g*degC, or 235 J/kg*K.
In an experiment to determine the thermal conductivity of a bar of a new metal alloy, one end of the bar is maintained at 0.00°C and the other end at 100. °C. The rectangular bar is 2.25 cm x 2.25cm and a length of 0.500 m. If the rate of heat transfer through the bar is 15.0 J/s, what is the thermal conductivity of the bar to 3 sig fig? Material having thermal.conductivity Area A 51 sno

Chapter 14 Solutions

College Physics

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