A machine requires 1000J of work to raise a load of 500N ...
A machine requires 1000J of work to raise a load of 500N through a vertical distance of 1.5m. Calculate the efficiency of the machine
80%
75%
50%
33%
Correct answer is B
500×1.5100.0 x 100%
= 75%
The angle between the geographic and the magnetic meridians at a place on the earth’s surface ...
the ray which causes gas molecules to glow is known as ...
Which of the following is NOT a vector quantity? ...
The heat produced in a conductor carrying an electric current is ...
The current I in the fig above is ...
A wave has an amplitude equal to 4.0m, angular speed 13π rads-1 and phase angle \(\f...