Manny is using a screwdriver to pry open the lid of a paint can. He applies a force of 25 N to the end of the screwdriver. In turn, the screwdriver applies a
force of 375 N on the lid. What is the mechanical advantage of the
screwdriver in this case?

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?

Which changes would result in a decrease in the gravitational force btween two objects? check all that apply

Which statement is true if the refractive index of medium a is greater than that of medium b? a. total internal reflection is possible when light travels from air to medium b to medium a. b. total internal reflection is possible when light travels from medium a to medium b. c. total internal reflection is possible when light travels from medium b to medium a. d. total internal reflection is possible when light travels from air to medium a. e. total internal reflection is possible when light travels from air to medium b.