two point charges of 5*10^-19 and 20*10^-19 are placed 0.25m apart where should a third point be placed

Organelles are 1. responsible for producing power for the cell 2. tiny structures in the cell that carry out the cell's activities 3. responsible for digestion in the cell 4. found outside of the membrane

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?

Which of the following is not a physical property of mattera. melting pointb. heat of combustionc. viscosityd. boiling point