Which will exert more pressure: a 100kg mass on 10m^2 or 50kg mass on 4m^2? Give reason. Pls help

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f

Diverging mirrors and lenses always produce images

Determine the moment of the force f about an axis extending between a and c. express the result as a cartesian vector. a is at the origin, c is at (4,3,0) and f = (4i + 12j -3k) lb coming out of b (4,3,-2).