Use a heat sink to prevent damage to components from the heat of a soldering iron.
Answer the following statement true (T) or false (F)
True
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Briefly describe the three forms clay can be found in.
What will be an ideal response?
The design wind speed for an average -risk building at a location has a probability of occurrence of ______.
A) once in 200 years. B) once in 100 years. C) once in 300 years. D) once in 50 years. E) none of the above.
A refrigerator using a 0.5 hp motor has a coefficient of performance of 3.05. 2 gallons of tea (model as water) is placed into the refrigerator at 80oF. How long will it take for the refrigerator to cool the tea to 40oF, assuming that this is the only heat load to be considered. Does this seem realistic? If not, what assumptions were made which make the calculation appear unrealistic?
Given: ?= 3.05; W?= -0.5 hp = 0.3534 Btu/s; Water: V= 2 gal = 0.2674 ft3; T1 = 80oF; T2 = 40oF Assume: The refrigerator is operating in a cyclic fashion. The water behaves as an incompressible substance with constant specific heats: c = 1 Btu/lbm-RSolution: What will be an ideal response?
A mixture of oil and oxygen could cause _____
a. corrosion b. an explosion c. low torch heat d. excessive torch heat