A well-sealed room contains 78 kg of air at 1 atm and 17 degrees C. Now a 1 -kW electric heater and a 255-W fan are turned on. If heat transfer through the walls is negligible, what will the air temperature in the room in 16 min be

Power can be defined as a. the distance over which work was done. b. how much work can be done in a given time. c. all the work in an given area. d. the energy required to do work.

Acamcorder has a power rating of 20 watts. if the output voltage from its battery is 9 volts, what current does it use?

As seen in a us weather map, the h (or high) and l (or low) symbols indicate regions where surface air pressures are high or low, respectively, compared to surrounding areas. an h is plotted where the air pressure is highest and an l is plotted where the air pressure is lowest. proceeding outward and away from the center of a high pressure system, the air pressure "