An object is thrown vertically upward with an initial velocity of 50 m/s. find

a) the maximum height reached by the object.
b) the time taken to reach this height. (neglect the effect of air resistance).

(a) if the pressure in gas is doubled while its volume is held constant, by what factor do (i) vrms and (ii) change? (b) is it possible to boil water at room temperature (20oc) without heating it? explain.