Fig 2.2 shows a support for a leg in plaster and fig 2.3 shows a simplified diagram of the forces acting on the leg . Calculate the force F needed to keep the leg in a horizontal position

What is tan(61)? а. 1.80 b. 0.49 c. 0.61 d. 0.87

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?

Describe uniform velocity and variable velocity in short