A disk of radius R=7.52 cmR=7.52 cm is centered at the origin and lies in the y-zy-z plane. The disk has a surface charge density σ=5.88×10−6 C/m2.σ=5.88×10−6 C/m2. Evaluate the electric field E(x)E(x) produced by this disk along the x-x- axis at point P=(1.19 cm,0.00 cm).P=(1.19 cm,0.00 cm). The Coulomb force constant k=1/(4π0)=8.99×109 N·m2/C2.

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?

Ahot-air balloon is 11.0 m above the ground and rising at a speed of 7.00 m/s. a ball is thrown horizontally from the balloon basket at a speed of 9.00 m/s. ignore friction and air resistance and find the speed of the ball when it strikes the ground.

What happens when the vapor pressure of a liquid is equal to the external pressure?