Calculate the missing variables using the necessary formula and rules using "FORCE"

How much force is needed to accelerate a 2000kg car by 3 m/s2?

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.

The heliocentric and the geocentric models of the solar system included these central principles

The combining of light nuclei is called blank. blank as in not actually blank. you know what im tryin to say.