The refractive index varies with wavelength of light as given by formula (known as cauchy dispersion formula ), where A and B are constant. Determine the dimension of A and B.

Rosa records the distance that a toy car rolls and the time it takes to cover the distance. what scientific practice is this? collecting data asking a question providing explanations communicating results

Chemical energy is a form of energy. a. heat b. kinetic c. potential d. electromagnetic

Aman is trying to drag a small tree that he cut down. if the static coefficient of friction of the tree on the ground is 0.5 and the tree weighs 670 n, what is the minimum amount of horizontal force that the man will need to apply so that the tree will start moving? o a. 465 n o b. 230 n o c. 670 n o d. 335 n