F= 2.0*10^20 n, g = 6.67*10^-11 nm^2/kg^2, m1 = 5.98*10^24kg, r = 3.8×10^8m. solve for m2. i just need detailed on how to solve it

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

Fill in the blank. the number of each type of element in the compound (other than 1) is represented by a small number to the right of the element symbol.

Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.