Aprinted circuit board (pcb) is supported by a chassis that is attached to a vibrating motor. the board is 1.6 mm thick, 200 mm wide, 254 mm long, and has a mass of 0.6 kg. neglect damping, model the board as a doubly clamped beam, determine its stiffness and natural frequency, and compute the displacement transmissibility if the chassis vibrates at 60 hz due to motor unbalance. the board is made from e poxy fiberglass for which e = 1.38 x 10^10 n/m2

Atown is considering building a biodiesel power plant that would burn biomass to generate electricity. which of the following correctly lists an advantage and a disadvantage of this project?

Four objects each with charge +2.0×10−7c are located at the corners of a square whose sides are 2.0 m long. part a what quantities can be determined using this information? check all that apply. the electric force on a charged object placed at the center of the square. the mass of each object. the total electric potential energy of the system consisting of the four charged objects. part b find the electric force on a charged object placed at the center of the square.

What energy transformations occur each time the skateboarder rolls up the ramp?