Awater-skier is being pulled by a tow rope attached to a boat. as the driver pushes the throttle forward, the skier accelerates. a 70.3-kg water-skier has an initial speed of 6.10 m/s. later, the speed increases to 11.3 m/s. determine the work done by the net external force acting on the skier?

Suppose that an electromagnetic wave which is linearly polarized along the x−axis is propagating in vacuum along the z−axis. the wave is incident on a conductor which is placed at z > 0 region of the space. the conductor has conductivity σ, magnetic permeability µ and electric permittivity ε. (a) find the characteristic time for the free charge density which dissipates at the conductor. (b) write the maxwell equations and derive the wave equation for a plane wave propagating in a conductor. (c) find the attenuation distance at which the incident amplitude reduces to e ^−1 of its initial value. (d) find the electric and magnetic fields inside the conductor. 8 (e) find the power loss per area of the incident electromagnetic wave at the surface of conductor.

Which type of bond is found between the atoms of a molecule? a. metallic b. delocalized electron c. covalent d. ionic

The law of reflection states that the angle of reflection is equal to the angle of