how much power, in watts, is needed to cut a lawn in 50 min if the work ivolvled is 100,000 j
1 watt = 1 J/second
100,000 J/50min*(60 s/min)=
Check my thinking.
To calculate the power in watts, you can use the formula:
Power (in watts) = Work (in joules) ÷ Time (in seconds)
First, convert the time from minutes to seconds:
50 minutes = 50 × 60 = 3000 seconds
Now substitute the values into the formula:
Power = 100,000 J ÷ 3000 s
Power = 33.33 watts (rounded to two decimal places)
Therefore, approximately 33.33 watts of power is needed to cut the lawn in 50 minutes if the work involved is 100,000 joules.
To calculate the power needed to cut a lawn, we can use the formula:
Power (P) = Work (W) / Time (t)
Given:
Work (W) = 100,000 J (Joules)
Time (t) = 50 min
First, we need to convert the time from minutes to seconds since the unit for work is in Joules, which is based on the SI unit of seconds.
1 min = 60 seconds
Therefore, the time in seconds is:
t = 50 min * 60 seconds/min
t = 3000 seconds
Now we can substitute the values into the formula:
P = 100,000 J / 3000 s
Dividing 100,000 J by 3000 s gives:
P = 33.33 watts (rounded to two decimal places)
Therefore, approximately 33.33 watts of power are needed to cut the lawn in 50 minutes, considering the given work amount of 100,000 Joules.