Determine the heat transfer rate from an electronic chip whose surface temperature is 30ºC and has an exposed surface area of 4 cm^2. The temperature of surrounding air is 25ºC. The heat-transfer coefficient for this situation is h = 25 W/m^2·k . Express your answer in both SI and U.S. customary units. What is the R-factor (film resistance) for this situation?
What will be an ideal response?
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Why is it important to prepare the alternate amounts carefully and thoroughly?
What will be an ideal response?
Los materiales se pueden desplazar de manera horizontal mediante _____.
a. elevación con una polea b. deslizamiento por el piso c. elevación manual mediante una cuerda d. un ascensor
Regular fluorescent ballasts are designed to light fluorescent lamps in an ambient temperature of __________ degrees F or higher.
a. 25 b. 40 c. 50 d. 63
Technician A says some 4WD vehicles use a solid front axle. Technician B says some 4WD vehicles use halfshafts to send torque to the front wheels. Which technician is correct?
A) Technician A only B) Technician B only C) Both Technicians A and B D) Neither Technicians A nor B