Acylindrical can of radius 200mm has liquid weighs 50kg. find the height of liquid in cm in the can, if the density is 0.8g/cm3.

If the speed of a particle triples ,by what factor does its kinetic energy increase?

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length of a column of water 1.00 km high for a temperature increase of 1.00ºc. note that this calculation is only approximate because ocean warming is not uniform with depth. (answer in ×10^{-3} −3 m)