Find the energy (in eV) of a photon with a frequency of 1.5 x 1016 Hz. eV Need Help? Read It

A dental X-ray typically affects 215 g of tissue and delivers about 3.95 µJ of energy using X-rays that have wavelengths of 0.0235 nm. What is the energy in electron volts of a single photon of these X-rays? energy of a photon: eV How many photons are absorbed during the dental X-ray? number of photons absorbed: photons

What is the kinetic energy of an electron that passes undeviated through perpendicular electric and magnetic fields if E = 4.0 kV/m and B = 8.0 mT? 1.4 eV 0.65 eV O 0.54 eV 0.84 eV O 0.71 eV

Find the photon energies in the emission spectrum (3 different energies) and the wavelengths of light in the emission spectrum.

An excited electron drops to its ground state, emitting a photon of frequency f = 5.10×1015 Hz. What is the energy of this photon? Enter the numerical value in units of eV.

The following table lists the work functions of a few common metals, measured in electron volts. Metal (eV) Cesium 1.9 Potassium 2.2 Sodium 2.3 Lithium 2.5 Calcium 3.2 Copper 4.5 Silver 4.7 Platinum 5.6 Part A Light with a wavelength of 190 nm is incident on a metal surface. The most energetic electrons emitted from the surface are measured to have 4.0 eV of kinetic energy. Which of the metals in the table is the surface most likely to be made of? ▸ View Available Hint(s) O cesium potassium sodium lithium Using these data, answer the following questions about the photoelectric effect. 000 calcium copper silver O platinum Submit Part B Of the eight metals listed in the table, how many will eject electrons when a green laser (g = 510 nm) is shined on them? ▸ View Available Hint(s) ○ 0 1 ○ 2 3 4 5 6 ○ 7 ○ 8 Submit Part C Light with some unknown wavelength is incident on a piece of copper. The most energetic electrons emitted from the copper have 2.7 eV of kinetic energy. the copper is…

Find the momentum (in kg·m/s) of a 11.0 keV x-ray photon.   What is the neutron's kinetic energy (in keV)?

A spectral emission line is electromagnetic radiation that is emitted in a wavelength range narrow enough to be taken as a sin-gle wavelength. One such emission line that is important in astronomy has a wavelength of 21 cm.What is the photon energy in the electromagnetic wave at that wavelength?

Plz solve

A 117.0W lightbulb emits about 7.45W of visible light. (The other 109.55W are emitted as infrared radiation or lost as heat to the surroundings.) The average wavelength of the visible light is about 570.0nm, so make the simplifying assumption that all the visible light has this wavelength. What is the frequency of the emitted visible light? How many visible-light photons does the bulb emit per second?