We consider the angular response to a unit step input force f(t). we observe that the unit step response θ(t) is oscillatory with the following properties: i) the angular displacement θ(t) reaches a maximum value θmax = 6 deg ii) the angular displacement θ(t) converges to a steady-state value θss = 4 deg when t → [infinity]. using this information, determine the values of the mass m and the rotational damping coefficient br.

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.

Sort the images based on whether there's a force of attraction or repulsion between the magnets shown. attraction repulsion

Aa a of 22 m/s at an of 36.9 .be . a. b. c. (3)x y of? (3)go? (4) () it to to ?