The maximum load capacity (elevator and passengers) ofan elevator is 1600 kg. It is moving up with a constant speed of 1.8 m/s. What is the minimum power delivered by the motor to the elevator. if the frictional force opposing the motion is 4000 N?

Which of the following options is NOT a correct difference between the interference and diffraction?

Interference fringes are produced in Young‘s double slit experiment by using two coherent sources of intensity ratio of 49 :1. What is the correct ratio of maximum and minimum intensities?

Which of the following options is the correct unit of permittivity?

In the given image, what is the value of Vimx for the given Zener diode (in the 'on' state)?

What is the power of a lens if the value of its focal length is 0.8 m?

When a projectile achieves escape speed from earth, it _______.

The velocities of seismic waves traveling from earthquake foci ________.

When we say charge is conserved, we mainly mean that charge can be _________.

When it's winter in the united states, in argentina it is _____.

The unit of electric potential or electromotive force is the _____. volt ohm ampere franklin