Physics, 07.12.2021 22:40 DVM117x017
An object is dropped from a 42 m tall building. How long does it take to reach the ground?
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Physics, 21.06.2019 21:30
Although light from the sun appears white, it is actually made up of a lot of different colors. this portion of the electromagnetic spectrum, we call white light is referred to as within the electromagnetic spectrum.
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Physics, 21.06.2019 22:00
What is the fate of the electrons that interact with a specimen in an electron microscope?
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Physics, 22.06.2019 00:20
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.
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Physics, 22.06.2019 21:10
Which of the following is a measure of the amount of light a star directly emits? a. luminosity b. intensity c. wavelength d. brightness
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An object is dropped from a 42 m tall building. How long does it take to reach the ground?...
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