50 mA of current flows through a 10 k? resistor. How much power is dissipated?
A) 5 ?W B) 0.25 ?W C) 500 W D) 25 W
D
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A gap must be provided between the bottom of the shelf angle and the brick veneer (below the shelf angle). What is the reason for this gap?
What will be an ideal response?
For the absorption of a gas (like carbon dioxide) into a liquid (like water) Henry’s law states that partial pressure of the gas is proportional to the mole fraction of the gas in the liquid–gas solution with the constant of proportionality being Henry’s constant. A bottle of soda pop (CO2 - H2O) at room temperature has a Henry’s constant of 17,100 kPa. If the pressure in this bottle is 140 kPa and the partial pressure of the water vapor in the gas volume at the top of the bottle is neglected, the concentration of the CO2 in the liquid H2O is
(a) 0.004 mol-CO2/mol (b) 0.008 mol-CO2/mol (c) 0.012 mol-CO2/mol (d) 0.024 mol-CO2/mol (e) 0.035 mol-CO2/mol
Effectively multitasking means that you are able to _______
A) Get several people to do your work for you B) Do everything at once C) Work on several activities and keep them all straight D) Do several things one thing at a time
To manually defrost a frozen evaporator coil, technicians should:
A) Chip away the ice from the coil using a tool designed for chipping ice. B) Use any available sharp object to chip away ice from the coil. C) Use a heat gun to accelerate the melting of the ice. D) Spray the ice with liquid refrigerant, which will boil and melt the ice.