In the middle of science class, you have a great idea. being on the fourth floor, you get a friend to watch out the window of the third, second and first floors just beneath you. you have al you friends on a conference call on your cell phone and tell them to let you know when they see a book you drop out you window pass by their window. which statement is true of the amount of time it takes to pass by each window?

a) the time interval between floors is the same.

b) the time interval between floors becomes less each time.

c) the time interval between floors become more each time.

d) the time interval between floors becomes infinitely long.

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?

If an electric circuit is not grounded it is best to reach out and touch it to provide the ground a.true or b.false

A10-kg piece of aluminum sits at the bottom of a lake, right next to a 10-kg piece of lead, which is much denser than aluminum. which one has the greater buoyant force on it? explain. b - the aluminum a) both have the same buoyant force. b) the aluminum c) the lead d) it cannot be determined without knowing their volumes.