- #1
Alethia
- 35
- 0
Okay, I have this problem that I've been having trouble with. It seems like a simple problem, but I keep getting the wrong answer and I don't know where I'm making the error. Maybe one of you can help me target the problem. =) The problem is as follows:
Well, firstly I converted the 50.0 hp into watts by multiplying it by 746 (because one hp equals 746 watts). I got 37300 watts. Then using the formula [tex]P=\frac{W}{\Delta t}}[/tex], I plug in 6.40 x 105 J as P(ower) and 6.40 x 105 as W(ork). When I calculated it, I get .058 seconds for t. However, the correct answer is 17.2 seconds. Can anybody tell me where I'm going wrong and waht I need to do?If an automobile engine delivers 50.0 hp of power, how much time will it take for the engine to do 6.40 x 105 J of work?