You're 6.0 m from one wall of a house. You want to toss a ball to your friend who is 6.0 m from the opposite wall.
The throw and catch each occur 1.0 m above the ground.
(Figure 1) Assume the overhang of the roof is negligible,
so that you may assume the edge of the roof is 6.0 m
from you and 6.0 m from your friend.

What color of light must blue light mix with to create white light? a. yellow b. white c. blue d. green

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

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.