(a) What is the available energy content, in joules, of a battery that operates a 2.00-W electric clock for 18 months? (b) How long can a battery that can supply 8.00×104 J run a pocket calculator that consumes energy at the rate of 1.00×10?3 W ?

Step-by-step solution Step 1 of 4 The equation to find the power is, Here is the power, is the energy and is the time taken. Step 2 of 4 (a) Use the above formula to find the available energy content of a battery, Substitute for and for . Therefore, the available energy content of a battery is .