When is the pressure of the man on the ground more – lying position or standing position? Explain.

What is the measurement of how fast an object moves relative to a reference point?

The magnitude of the poynting vector of a planar electromagnetic wave has an average value of 0.939 w/m^2 . the wave is incident upon a rectangular area, 1.5 m by 2.0 m, at right angles. how much total electromagnetic energy falls on the area during 1.0 minute?

What is a subatomic particle with a negative charge and very little mass?