Convert 2-6 minutes in seconds

Convert 2.6 minutes into seconds ?

Three girls start jogging from the same point around a circular track and each one completes one round in 24 seconds, 36 seconds and 48 seconds respectively. After how much time will they meet at one point? (a) 2 minutes 20 seconds (b) 2 minutes 24 seconds (c) 3 minutes 36 seconds (d) 4 minutes 12 seconds

A current of 2.6 ampere is passed through CuSO_4 solution for 6 minutes 20 seconds. The amount of Cu deposited is (At. wt. of Cu=63.5, Faraday = 96500 C)-

A , B and C start at the same time in the same direction to run around a circular stadium. A completes a round in 252 seconds, B in 308 seconds and C in 198 seconds, all starting at the same point. After what time will they meet again at the starting point? (a) 26 minutes 18 seconds (b) 42 minutes 36 seconds (c) 45 minutes (d) 46 minutes 12 seconds

A potential differnce of 100 V is applied across a resistor of resistance 50Omega for 6 minutes and 58 seconds . Find the heat produced in Joule

A potential differnce of 100 V is applied across a resistor of resistance 50Omega for 6 minutes and 58 seconds . Find the heat produced in calorie .

Convert C2H6 into CH4

Convert 83.12^@ into degrees, minutes and seconds.