In the equation ca(s) + 2h2o(l) --> ca(oh)2(aq) + h2(g) list each element used as a reactant, and tell how many atoms of each are needed for this reaction.

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.

Amira pulls a 3 pound wagon 4 feet. how much work has she done?

70 give a real life example showing how sensory neurons work with the motor neurons