A cavity has the dimensions of 12cmx12cmx12cm. We would like to do a microwave experiment where the magnetic field acting on the molecules at the center of the cavity is zero. What wavelength below is not suitable for this experiment?
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- Please box answers.How much energy is carried by light with a wavelength of λ = 509 nm? Express your answer in eV (electron-volts).Pulsed lasers used for science and medicine produce very brief bursts of electromagnetic energy. If the laser light wavelength is 1062 nm (Neodymium-YAG laser), how brief would the pulse need to be to fit only one wavelenth? 5.43 x 10-12 s 3.54 x 10-15 s 5.43 x 10-15 s O 3.54 x 10-12s
- Large quantities of dust should have been left behind after the creation of the solar system. Larger dust particles, comparable in size to soot and sand grains, are common. They create shooting stars when they collide with the earth's atmosphere. But very small dust particles are conspicuously absent. Astronomers believe that the very small dust particles have been blown out of the solar system by the sun. By comparing the forces on dust particles, determine the diameter of the smallest dust particles that can remain in the solar system over long periods of time. Assume that the dust particles are spherical, black, and have a density of 2000kg/m^3. The sun emits electromagnetic radiation with a power of 3.9×10^26W.A CO, laser produces a cylindrical beam of light with a diameter of 0.850 cm. The energy is pulsed, lasting for 1.70 ns, and each burst contains an energy of 400 mJ. What is the length L of each pulse of laser light? L = m What is the average energy per unit volume uve for each pulse? J/mThere are several proteins that exist in nature that are fluorescent, which means they absorb visible light or other electromagnetic radiation and reemit that light, usually at a longer wavelength. One of the more prevalent fluorescent proteins is GFP, or green fluorescent protein, which emits bright green fluorescent light when exposed to light in the blue to ultraviolet region of the electromagnetic spectrum (see the photo). The main absorption, or excitation, wavelength for one type of GFP is 395 nm. (a) What is the energy (in eV) of a photon in this absorbed light? The emission spectrum of the light from the GFP peaks near 509 nm, which is in the shorter wavelength (higher energy) portion of the green part of the visible spectrum. (b) What is the energy (in eV) of a photon in the emitted light? (c) If the emitted light corresponded to the longest wavelength in the Balmer series from a hydrogen-like atom, what would be the effective value of Z for this atom? (Note: Z will not be a…
- A flat electromagnetic wave of frequency 50GHz travels in free space in the -Y direction at some point and at a certain instant the electric field has its maximum value 700V / m and is forming an angle of 60 ° in the (-ZX) plane. knows that the movement of the particles is clockwise. Determine: a. The expressions for the electric and magnetic field b. Find the moment per unit volumeAn industrial laser is used to burn a hole through a piece of metal. The average intensity of the light is 5 = 1.95 x 10⁹ W/m². What is the rms value of (a) the electric field and (b) the magnetic field in the electromagnetic wave emitted by the laser? (a) Number (b) Number i 2.23E6 i 4.06 Units nm + Units T +The intensity of electromagnetic radiation from the sun reaching the earth's upper atmosphere is 1.37 kW/m². Part A Assuming an average wavelength of 680 nm for this radiation, find the number of photons per second that strike a 1.90 m² solar panel directly facing the sun on an orbiting satellite. E
- What are the associated peak amplitudes of the E and H fields if sunlight has a maximum intensity of 1300 W/m2 on the earth's moon? Calculate the relative strengths of the forces on the moon due to the gravitational field of (a) the Earth, (b) the Sun (c) the force from solar pressure on the moon. Use internet or other resources to estimate any required physical constants, masses, distances and areasA housing attached to a microprocessor uses radiator fins to get rid of excess heat. If the largest amount of radiation emitted by the fins has a frequency of 186.20 THz, what is the associated wavelength? m