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74 hours.
9 hours and 30 minutes.
7 hours
The efficiency of the mechanical device is calculated by dividing the output work (230 J) by the input work (430 J) and multiplying by 100. Therefore, the efficiency percentage would be (230 J / 430 J) * 100 = 53.5%.
430 miles is a 5 hour and 32 minute
Well, honey, if you want to do some basic math, 8:30 to 4:30 is 8 hours. But if you need me to hold your hand through it, that's 8 hours and 30 minutes. So, there you have it, 8 and a half hours of your precious time spent working away.
5.5
4 hours and 45 minutes.
6 hours.
3 hours.
It is 3:45.
5.5