Answer:
Sorry for being late. It is...
A.) X: Load, Y: Fulcrum, Z: Lever
Answer:
c
Explanation:
all the others r physical
Answer: For ideal machine efficiency = 1. Hence M.A = V. R. The V. R of an ideal machine and the practical machine is a constant or is the same for both
Answer:
20.85 years
Explanation:
2.61 km = 2610 m
2.07 kW = 2070 W
First we need to calculate the potential energy required to take m =
kg of rain cloud to an altitude of 2610 m is

With a P = 2070 W power pump, this can be done within a time frame of

or 658037739/(60*60) = 182788 hours or 182788 / 24 = 7616 days or 7616 / 365.25 = 20.85 years