Determine the temperature rise that would occur when 2 kg of the following materials are exposed to a heating element putting out 500 J. Discuss your assumptions.
(a) The material is copper
(b) The material is aluminum
(c) The material is concrete.
We have assumed that all of the energy goes into the material. No heat loss to the
surroundings.
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Compaction is typically accomplished by:
A. vibrating B. vibrating C. adding a temporary weight D. all of the above E. none of the above
Lines used to represent a specific elevation are referred to as ____.
A. cutting planes B. contour lines C. object line D. break lines
What is the difference between short-hair fiberglass and long-hair fiberglass?
What will be an ideal response?
An automobile engine produces 85 kW of power and has an efficiency of 0.32. Determine the heat input rate from the combustion process as well as the rate of heat lost to the environment.
Given: W?=85 kW;n= 0.32 Assume: The engine is a cyclic heat engine. What will be an ideal response?