Find the wavelength (in nm) of a 2.52 eV photon. a. 492.34127 nm. b. 585.88611 nm. c. 541.5754 nm. d. 418.49008 nm.

What are atoms of the same element with varying number of neutrons

The sun’s mass is 2.0×10^ 30 kg, its radius is 7.0×10 5 km, and it has a rotational period of approximately 28 days. if the sun should collapse into a white dwarf of radius 3.5×10 3 km, what would its period be if no mass were ejected and a sphere of uniform density can model the sun both before and after?

14. a body is projected with velocity vi from a.at the same time another body is projectedvertically upwards from point b withvelocity v2 lies vertically below the highestpoint. both the bodies collide thenv2÷v1is