Part A)) Determine the equivalent resistance of 25 Ω and 15 Ω in series. ReqA=?

Part B)) determined equivalent resistance of 220 Ω and 430 Ω in parallel. ReqB=?

Two questions please help

The 5-kg cylinder is initially at rest when it is placed in contact with the wall b and the rotor at a. if the rotor always maintains a constant clockwise angular velocity v = 6 rad> s, determine the initial angular acceleration of the cylinder. the coefficient of kinetic friction at the contacting surfaces b and c is mk = 0.2.

What is meant by the statement" the melting poin of glycerine is 13 degree celsius

Two polarizers are oriented at 40∘ to each other and plane-polarized light is incident on them. if only 16 percent of the light gets through both of them, what was the initial polarization direction of the incident light?