Given a stationary charge distribution. derive kirchhoff’s current law, which states that the sum of all inflowing currents is equal to the sum of all out flowing currents

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 tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?

Imagine you are standing in the antarctic during the southern hemisphere summer. the sky is clear and blue. there are no clouds in the sky. your shadow is cast on the icy ground. what is the color of the shadow?