What is the cutoff wavelength Amin in pico meters (10-12) of the X-Rays emitted when 32.1 kilo eV electrons fall on a molybdenum target? Please give your answer with one decimal place.
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- The energy-level diagram for the atomic emission spectra of an unknown gas is presented in the diagram below.An atom has its electron in the energy level at - 1.2 eV. It absorbs a photon, which promotes the election to the -0.4 eV level. What is the wavelength (in meter) of this photon. Round off the answer to 2 decimal places with scientific representation.identify the knowns, unknown(s), appropriate formula(s) then computation 1. a). The wavelength of maximum solar emission is observed to be approximately 0.475μm. What is the surface temperature of the sun (assumed as blackbody)? (b) The temperature of the human body when having a high fever is 40 deg C. The intensity of radiation emitted by the human body is maximum at what wavelength? (c) The Cosmic Microwave Background radiation (CMB) fills the universe. If temperature of the space is 2.7 K, then CMB attains intensity maxima at what wavelength?
- if a detector receives 10 - 10 Watts of power in the wavelength band 2.65 to 2.80 \mu m, how many photons per second are received? Assume all photons have a wavelength of 2.725 \mu m (the midpoint of the band). Submit your answer using scientific notation.Using the given charge-to-mass ratios for electrons andprotons, and knowing the magnitudes of their charges areequal, what is the ratio of the proton’s mass to the electron’s?(Note that since the charge-to-mass ratios are given to onlythree-digit accuracy, your answer may differ from theaccepted ratio in the fourth digit.)(a) The blackbody radiation emitted from a furnace peaks at a wavelength of 4.5 10-6 m (0.0000045 m). What is the temperature inside the furnace? (in K) (b) The charger cord used to recharge a cell phone contains a transformer that reduces 120 V AC to 4 V AC. For each 1,400 turns in the input coil, how many turns are there in the output coil? (Round your answer to at least one decimal place.)
- The global standard for time is based ona transition in cesium atoms that occurs when a microwave photon of frequency 9,192,631,770 Hz is absorbed. What is the energydifference in eV between the two levels of cesium that correspondwith this transition?What is the wavelength in nanometers observed with a frequency of (3.3x10^15)? Answer with 2 significant figures and it must be in scientific notation. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: Answer x10 unitschecking answer The spectrum of another astronomical object has a peak wavelength of 51 nanometers. What is the likely surface temperature of this object? Make that calculation, showing your work
- A photon has a frequency 4873935 Hz. Calculate its energy in Joules. Answer in Scientific Notation. Round your answer to 2 significant figures.Ruby lasers have chromium atoms doped in an aluminum oxide crystal. The energy level diagram for chromium in a ruby is shown in Figure below . Whatwavelength is emitted by a ruby laser?Please explain with every step how to solve this equation. I have seen it worked out before so I know the math and the answer but I really need it explained well so that I understand it. Find the frequency and wavelength of a 50 Mev Gamma ray photon
