An apple is placed 20.0 cm in front of a diverging lens of focal length 10.0 cm. find the image distance and the magnification of the apple.

An ideal otto cycle has a compression ratio of 8. at the beginning of the compression process, air is at 95 kpa and 27°c, and 750 kj/kg of heat is transferred to air during the constant-volume heat-addition process. assuming constant specific heats at room temperature, determine (a) the pressure and temperature at the end of the heat-addition process, (b) the net work output, (c) the thermal efficiency, and (d) the mean effective pressure for the cycle. (4390 kpa, 1730 k; 423 kj/kg; 56.4%; 534 kpa)

When solid surfaces slide over each other the kind of friction that occurs is called friction

Is the number of complete movements of a wave per second.