An m = 8.09 kg mass is suspended on a k = 473000 n/m spring. the mass oscillates up-and-down from the equilibrium position yeq = 0 according to y(t) = a sin(ωt + φ0). calculate the angular frequency ω of the oscillating mass. answer in units of s−1 . question 3, chap 15, sect 3. part 2 of 4 10 points at time t0 = 0 the mass happens to be at y0 = 4.05 cm and moving upward at velocity v0 = +4.12 m/s. (mind the units! ) calculate the amplitude a of the oscillating mass. answer in units of cm.

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.

Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value

What is an aquifer for science class