What is the mass of an object that has a weight of 52n? (n=newtons)answer is in kilograms

The slope of a velocity time graph over any interval of time gives the during that interval

Dao makes a table to identify the variables used in the equations for centripetal acceleration. what quantities belong in cells x and y?

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?