Is the description of how gravity works a scientific theory or a scientific law? how do you know? (I don’t know if I put this in the right place)

Picture a all traveling at a constant speed around the inside of a circular structure. is the ball accelerating? explain your answer

An initially unpolarized light if intensity 500 w/m^2 passes through four polarizers. the transmission axis between adjacent polarizers is 45∘. what percentage of the initial intensity is transmitted by the system?

Awoman holds a book by placing it between her hands such that she presses at right angles to the front and back covers. the book has a mass of m = 1.8 kg and the coefficient of static friction between her hand and the book is μs = 0.67. no attempt 50% part (a) what is the weight of the book, fgb in newtons?