Which statements accurately relate radiation and health? Check all that apply.
A - Ionizing radiation produces ions that disrupt natural chemical reactions in the body.
B - Stochastic effects are associated with short-term, high-level exposure to radiation.
C - Cancer and DNA mutations are examples of non-stochastic effects.
D - A single X-ray delivers about 1/10 of the radiation exposure permitted for one person per year.
E - Lead shielding is an effective means of reducing radiation exposure.

Acricket ball of 70g moving with a velocity of 0.5 m/s is stopped by a player in 0.5s what is the force applied to stop the ball

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.

Abanked road comer of radius 146 m is to be constructed. if the comer is designed for vehicles moving with a speed of 20.0 m/s, what should the banking angle be, in units of degrees?