Q. A vertical electric field of magnitude 2.00 × 104 N/C exists above the Earth's surface on a day when a thunderstorm is brewing. A car with a rectangular size of 6.00 m by 3.00 m is traveling along a roadway sloping downward at 10.0°. Determine the electric flux through the bottom of the car.
Q. A rotating uniform-density disk of radius 0.8 m is mounted in the vertical plane. The axle is held up by supports that are not shown, and the disk is free to rotate on the nearly frictionless axle. The disk has mass 3.4 kg. A lump of clay with mass 0.5 kg falls and sticks to the outer edge of the wheel at location A, < -0.56, 0.571, 0 > m. Just before the impact the clay has a speed 8 m/s, and the disk is rotating clockwise with angular speed 0.62 radians/s.
what is the angular velocity of the wheel?