Adoctor is trying to diagnose the cause of hearing loss in four patients. she has recorded her notes from the patient interviews in this chart. which most likely describes the doctor’s diagnoses for each patient? brody was exposed to harmful noise, ashley’s ears have aged, keaton has earwax buildup, and brian has bacteria in his ear. brody’s ears have aged, ashley was exposed to harmful noise, keaton has earwax buildup, and brian has bacteria in his ear. brody’s ears have aged, ashley was exposed to harmful noise, keaton has bacteria in his ear, and brian has earwax buildup. brody was exposed to harmful noise, ashley’s ears have aged, keaton has bacteria in his ear, and brian has earwax buildup.

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.

1. jay fills a wagon with sand (about 20 kg) and pulls it with a rope 30 m along the beach. he holds the rope 25° above the horizontal. the rope exerts a 20-n tension force on the wagon. how much work does the rope do on the wagon?

(a) if the pressure in gas is doubled while its volume is held constant, by what factor do (i) vrms and (ii) change? (b) is it possible to boil water at room temperature (20oc) without heating it? explain.