Awinch system powered by a 7.2 volt motor is used to lift a 30 newton load a distance of 2.5 meters. the motor's current rating is 370 milliamps. what is the efficiency of the electro-mechanical system if the time required to raise the load is 90 seconds?

Which quantities are scalars? choose all that apply a.distance b.speed c. acceleration d.velocity

There are weak or strong attractive forces between atoms of liquids with a high viscosity

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?