In 18.6 kg person climbs up a uniform ladder with negligible mass. the upper end of the ladder rest on a frictionless wall. the bottom of the ladder rest on a floor with a rough surface where the coefficient of static friction is 0.63. the angle between the horizontal and the ladder is theta. the person wants to climb up the ladder a distance of 1.6m along the ladder from the ladders foot. what is the minimum angle so that the person can reach the distance of 1.6m without having the ladder slip?

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?