A wagon with a mass of 35 kg is pulled so that it accelerates from 0 m/s to 30 m/s in 15 seconds.
Remember to show all work!
a. What is the acceleration of the wagon?

b. What is the force required to get this acceleration?

Plz help me

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.

Why does lightning travel from clouds to the ground?

How much energy is supplied to each coulomb of charge that flows through a 12-v battery?