Which factors affect gravitational force? check all that apply. 1.composition of the objects 2.distance between the objects 3.masses of the objects 4.volume of the objects 5.weights of the objects

The two most prominent wavelengths in the light emitted by a hydrogen discharge lamp are 656 nm(red) and 486 nm (blue). light from a hydrogen lamp illuminates a diffraction grating with 520lines/mm , and the light is observed on a screen 1.5m behind the grating. part a what is the distance between the first-order red and blue fringes? express your answer to two significant figures and include the appropriate units.

Which statement best explains why an object weight less on mercury than it does on earth

Does heating a metal wire increase or decrease its electrical resistance? why?