Question

How much time is needed for a 15,000 W engine to do 1,800,000 J of work? (Power: P = W/t) 0.008 s 8 s 120 s 1,785,000 s

Answer 1

By definition, the power is given by:
 $P = \frac{W}{t}$
 By definition, the power is given by:
 Where,
 W: Work done
 t: time
 Clearing the time we have:
 $t = \frac{W}{P}$
 Substituting values we have:
 $t = \frac{1800000}{15000}$
 Making the corresponding calculations we have:
 $t = 120s$
 Answer:
 is needed for a 15,000 W engine to do 1,800,000 J of work about:
 $t = 120s$

Answer 2

Answer: 120s

Step-by-step explanation: