Two books are located 2 m above the surface of the earth. the first has a mass of 4 kg; the second has a mass of 2 kg. which statement about the pull of earth's gravity is true?

a. the force of earth's gravity on the 2-kg book is stronger than the force of earth's gravity on the 4-kg book. b. the force of earth's gravity is the same on both books, because the two books are located at the same height above the earth. c. the force of earth's gravity is the same on both books, because when they're dropped, they'll both accelerate at 9.8 m/s2. d. the force of earth's gravity on the 4-kg book is stronger than the force of earth's gravity on the 2-kg book.

Calculate the amount of heat produced when 18000 coulombs of charge is transferred in one hour through a potential difference of 50v

Power can be defined as a. the distance over which work was done. b. how much work can be done in a given time. c. all the work in an given area. d. the energy required to do work.

The intensity of a polarized electromagnetic wave is 12 w/m^2. part a) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=0∘ with the plane of polarization? part b) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=30∘ with the plane of polarization? part c) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=45∘ with the plane of polarization? part d) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=60∘ with the plane of polarization? part e) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=90∘ with the plane of polarization?