how many photons are contained in a flash of orange light (605 nm) that contains 230 kj of energy? give your answer to 2 significant figure and in scientific notation.

Which of the following represents a virtual image?

In the image, the arrow is pointing to a celestial object. which attribute disqualifies the object from being a planet?

Agas contained within a piston-cylinder assembly undergoes three processes in series: process 12: compression with pv= constant from 1 bar and 1 liter to 4 bar. process 23: constant pressure expansion to 1 liter. process 31: constant volume calculate the pressure and volume at each state, and sketch the processes on a p-vdiagram labeled with pressure and volume values at each numbered stat