Answer:
Power P=246.78 KW
Explanation:
Mass of Elevator=4710 Kg
Can carry load =1910 Kg
Total Mass m to be lifted =4710 kg + 1910 Kg =6620 kg
speed = 3.80 m/s ⇒ per second distance traveled (height h) = 3.80 m and time t = 1 s
Using formula of Power P =
P =
P= 6620kg × 9.81 m/s² × 3.80 m / 1s
P= 246780.36 W
P=246.78 KW
Answer:
Workdone = 1250Nm
Explanation:
<u>Given the following data;</u>
Force, F = 500N
Distance, d = 2.5m
Workdone is given by the formula;
Substituting into the equation, we have
Workdone = 1250Nm
Therefore, the actual work done by the worker is 1250 Newton-meter.
Answer:
The current would be 0.12A
Explanation:
Well, the formula for electric current is
where i is current, q is charge and t is time. Then we have to calculate the charge. If we know that the charge of a proton is , then we calculate the charge of 1500 protons as it follows:
So the current for each square meter of Earth's surface is
Finally, knowing the surface of the Earth is 510065284702000 , we can calculate the total current