From the angle of refraction for a ray of light that enters a bucket of water from air at an angle of 25.0 degrees to the normal

The magnitude of the poynting vector of a planar electromagnetic wave has an average value of 0.939 w/m2 . 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

Which type of microscope would allow the viewer to see ribosomes inside a cell?

Phase changes are chemical changes. true or false