A 14 gauge copper wire is required to be used as a fuze for an electric burner having length to diameter ratio of 220.3x103. Calculate the amount of current drawn by the burner when connected to the main power source.
In the diagram, a force of 20 newtons is applied to a block. The block is in dynamic equilibrium. What is the magnitude and direction of the frictional force?
two 220V, 60W bulbs are used for 5 hours a day for 10 days, if each unit (1 kilowatt hour) costs Rs 3.50, find the total expense for it? please solve with explanation
A 1000 kg automobile enters a freeway on ramp at 20 m/s and accelerates uniformly up to 40 m/s in a time of 10 sec. How far does the automobile travel during this time ?