Answer:
Step-by-step explanation:
In order to find the time, we can use the following formula which is;
→ Power = Work done/ time taken.
Here we have power = 19kW and work done is 6.8 × 10⁷ Joules.
On substituting the respective values; we have;
→ 19000 W = 6.8 × 10⁷ / t
→ t = 6.8 × 10⁷/19000
→ t = 3579s ≈ 59.65 minutes
Hence is takes approximately 59.65 minutes to do the given amount of work.