Question 19 of 25 2 Points
A portable electric heater has a resistance of 8 ohms. It plugs into a wall
outlet that is 120 V. How much current, in amps, does it draw?
Answer here
SUBM

Aknife blade is a(n) a. lever b. screw c. wedge d. inclined plane

Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 10.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.90 m/s; (b) he is then lifted at the constant speed of 4.90 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 68.0 kg rescue by the force lifting him during each stage?

Agas expands from an initial volume of 0.040 m^3 and an initial pressure of 210 kpa to a final volume of 0.065 m^3 while its temperature is kept constant. how much work is done by the system?