The wavelength of the yellow-orange light from sodium-vapor streetlights is 589nm. What is its wavelength in units of mm?

There are two categories of ultraviolet light. Ultraviolet A (UVA) has a wavelength ranging from 320 nm to 400 nm. It is not so harmful to the skin and is necessary for the production of vitamin D. UVB, with a wavelength in vacuum between 280 nm and 320 nm, is more dangerous because it is much more likely to cause skin cancer.  (a) Find the frequency ranges of UVA and UVB.  (b) What are the ranges of the wave numbers for UVA and UVB?

It takes 492 kJ of energy to remove one mole of electrons from the atoms on the surface of solid gold. What is the speed of the ejected electrons (in m/s), if the incoming light has a wavelength of 200.0 nm

The Bragg angle for a certain reflection from a powder specimen of copper is 47.75 degrees at a Temperature of 293 K and 46.60 degrees at 1273 K. Calculate the coefficient of linear thermal expansion of copper. O A. 1.91 X 106 K-1 В. 2.81 X 106 к1 O C. 1.91 X 105 K1 С. O D. 2.81 X 10-5 K-1

When light with a wavelength of 198 nm strikes the surface of tin metal. What is the photon energy from the wavelength? А) 1.2х 10:18J в) 1.0х 10:18] 1.98 х 107] D 7.1 x 10-19 J

30 The energy of a photon is 2.24 eV ,The frequency and wavelength of the light will be * 5.6x10 ^-7 HZ and 5.4x10 ^14 m 5.4x10 ^14 Hz and 5.6x10 ^-7 m 6.63 x 10 ^15 Hz and 350 n m O 650 Hz and 550 n m

Give the energy (in eV) of a photon with wavelength 668.0 nm.

The red lasers used to read the barcodes of products at the grocery stores produce light with a wavelength of 633 nm. The electrical power consumption of a single grocery store laser is 5.00000 × 10-3 J s-1. If the laser is left on continuously for 365 days, what is the total amount of energy it emits as light? Assume that the laser works at 100% efficiency (i.e. all the electrical energy is converted to 633 nm light).   Final answer should be in joules and with 6 significant digits

Find the energy of the following. Express your answers in units of electron volts, noting that 1 eV = 1.60  10-19 J.(a) a photon having a frequency of 7.20  1017 Hz eV (b) a photon having a wavelength of 5.00  102 nm eV

An argon-ion laser produces a cylindrical beam of light whose average power is 1.10 W. How much energy is contained in a 2.92-m length of the beam? Number i Units