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- If the current in the Helmholtz coils were 2.4 A, rather than 1 A, and the accelerating voltage were still 100 V, what would the radius of the electron's path be? Give your answer in cm, and enter only the number. Blackboard will accept an answer witin 20% of the value it expects.Consider an object that produces continuum emission with it's peak emission occurring at 360 nm. What temperature is this object in degrees Kelvin? [round your answer to the nearest degree]For an ion source, the maximum half-angle of ion emission from the source is 13 milliradians. The source is biased to 9 kV and the aperture radius is 2.5 mm. Assuming uniform emission of the aperture and uniform distribution of particles over this range, what is the normalized emmitance from the source if the beam consist of ions 40 Ar 9+?
- Why the Townsend’s first ionization coefficient α is impacted by gas pressure? Explain.Show that the hydrostatic equation and gradient Richardson number are dimentionless.I have been asked to solve for r=rate in the following scenario FV = PV(1+r)t here are the values of my variables FV = 372 PV = 280 t = 5 Could you please show me the steps to get r isolated to the left side of the '=' please?
- Check Your Understanding If a=3+4i , what is the product a* a?Answer the following questions, since the lamp whose light distribution curve is given has a power of 23.4 W and an efficiency factor of 112 lm/W.a) How many lumens is the luminous flux of the lamp?b) If the lamp were a smooth sphere, that is, if the luminous intensity was constant in all directions, how much cd would this value be?c) If the lamp were a regular sphere, how many lx would the luminosity level it would create from a height of 2 m just below it?d) If the lamp were a hemisphere, how many lx would the illuminance it create from 2 m above it be? (r = 10cm)e) Note that the values in the light distribution curve of the lamp shown in the figure are given as cd/klm (cd / 1000 lm). According to this, how many lx will be the (real) illuminance level that will be created directly under the lamp from 2 m high?f) How many lx will be the illuminance of the lamp on a plane illuminated by the same height at an angle of 30°? (I need help solving this question, I would appreciate it if…pls send me answer of this queation immidiately and i will give you like sure.
- In a fully degenerate gas, all the particles have energies lower than the Fermi energy. Using the provided equation for the Fermi energy (EF), and assuming a white dwarf star has a temperature T = 107 K and a mass M = 1Msun, evaluate numerically the ratio Eth/EF, where Eth is the characteristic thermal energy of an electron in a gas of temperature T, to prove that the electrons inside a white dwarf are indeed degenerate. (Hint: Estimate the characteristic density (ne) based on the given conditions inside a white dwarf)At some of the reciprocal points, |F(τ)|2 = 0. Please figure out the rule for the occurence of such forbidden Bragg peak.Please solve it ASAP and with all the parts and with steps as well: (a) How many photons p er second enter the eye from a 100-W light bulb emitting light at 555 nm from 300 meters away? Assume the pupil is 6 mm in diameter and no light is absorb ed in the air. (b) According to the Rayleigh Criterion, would the lightbulb b e resolvable to the eye, assuming the diameter of the lightbulb is 0.075 m? (c) What is the size of the image of the lightbulb on the retina, assuming the diameter of the eye is 0.02 m? (d) The limit of b eing able to p ercieve light in a single retinal cell is 100 photons in a time interval of 0.1 s. Considering this, how far away can a 100-W bulb be seen?