A porter carries 30 bricks to a distance of 50 m in 25 s. If the weight of one brick is 12N, calculate the work done and power. [Ans: 18000J, 720W)
PHYSICS
Oasis School Science and Environment - 8
81​

The current in a hair dryer measures 11 amps. the resistance of the hair dryer is 12 ohms. what is the voltage?unit:

In the united states, tornadoes generally occur because of the freezing of ocean water underwater earthquakes meeting of cool and warm air masses shifting of warm and cool ocean currents

According to the second law of thermodynamics, what is true of entropy in all natural systems? a.it will always decrease. b.it will always increase. c.it will always remain the same. d.it is impossible to measure. e.it will always equal zero.