Fiberglass, plastic, and ____ sinks are not easily recycled.
A. cast iron
B. metal
C. solid china
D. porcelain
Answer: A
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An electric space heater has a metal coil at a temperature of 250°C, and is used to heat a space with an air temperature of 15°C. If the surface area of the space heater is 0.02 m2, and the emissivity of the heating element is 0.95, what is the rate of radiation heat transfer between the heater and the air?
Given: Ts = 250°C = 523 K; Tsurr = 15°C = 288 K; A = 0.02 m2; ? = 0.95 What will be an ideal response?
A section of a spur gear is shown in the accompanying figure. Tooth thickness = 0.5 x Circular pitch. What is the tooth thickness in inches if the circular pitch is 0.9638 inches? Round to four decimal places.
A. 0.4692 B. 0.4798 C. 0.4819 D. 0.5289
What are the key devices of a closed-loop system?
What will be an ideal response?
All lumber in contact with the foundation, along with sill plate, must be pressure treated with an approved chemical to prevent decay.
Answer the following statement true (T) or false (F)