2. a 2.5 gram sample of an isotope of strontium-90 was formed in a 1960 explosion
of an atomic...
Physics, 30.09.2019 21:00 oofdiegoofdie5562
2. a 2.5 gram sample of an isotope of strontium-90 was formed in a 1960 explosion
of an atomic bomb at johnson island in the pacific test site. the half-life of
strontium-90 is 28 years. in what year will only 0.625 grams of this strontium-90
remain?
Answers: 3
Physics, 22.06.2019 00:20, alyvia05
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.
Answers: 1
Physics, 22.06.2019 01:30, LarryJoeseph
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Answers: 2
Physics, 22.06.2019 09:00, jaeana
Abicycle slows down when the rider applies the brakes. what type of energy transformation is involved in this example? a. kinetic energy into heat energy b. heat energy into potential energy c. potential energy into kinetic energy d. kinetic energy into mechanical energy
Answers: 1
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