A radio controlled model car with mass m=4.58 kg starts a race initially from rest at t=0 and accelerates with constant acceleration to a speed of 11.2 m/s in a time of t=6.6 s. What is the average power do the car's batteries have to deliver during the acceleration, and what is the instantaneous power at the end of the time interval? Select one answer for average power (P-ave) and one for the instantaneous power at t=6.6 s (P-final).

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.

How is the gravitational force related to the distance between two objects?

An automobile steering wheel is shown. what is the ideal mechanical advantage? if the ama is 8, what is the efficiency of the steering wheel?