What is the wavelength (in nm) of a photon if the energy is 7.39 × 10⁻¹⁹ J? (h = 6.626 × 10⁻³⁴ J • s)

In Einstein's photoelectric experiment, the kinetic energy of an electron displaced from a metal by a photon was the difference between the energy of a photon and a threshold energy value for the metal. If you were to perform a similar experiment with the metal magnesium, which has a threshold energy of 5.86 × 10⁻¹⁹ J, and ultraviolet light of wavelength 55.5 nm, what would be the kinetic energy (in J) of the electron displaced?

The scattering of sunlight by the mixture of gas molecules in air results in the blue color of the sky. Calculate the energy (in Joules) of a single photon of blue light with a frequency of 7.50 × 1014 Hz. (h = 6.626 x 10-34 J•s) |x 10 49 J 2 3 4 5 C 7 8. +/- х 100

A certain microwave oven delivers 750 watts (J/s) of power to a coffee cup containing 66.6 g of water at 37.5°C. If the wavelength of microwaves in the oven is 9.75 cm, how long does it take, and how many photons must be absorbed, to make the water boil? The specific heat capacity of water is 4.18 J/ °C•g and assume only the water absorbs the energy of the microwaves. S photons

Determine the energy of a photon with a wavelength of 317 nm. (h = 6.626 × 10⁻³⁴ J • s and c = 3.00 × 10⁸ m/s)

The scattering of sunlight by the mixture of gas molecules in air results in the blue color of the sky. Calculate the energy (in Joules) of a single photon of blue light with a frequency of 6.30 × 10¹⁴ Hz. (h = 6.626 × 10⁻³⁴ J • s)

The scattering of sunlight by the mixture of gas molecules in air results in the blue color of the sky. Calculate the energy (in Joules) of a single photon of blue light with a frequency of 6.70 × 1014 Hz. (h = 6.626 × 1034 J•s)

What is the frequency of a photon if the energy is 7.33 × 10⁻¹⁹ J? (h = 6.626 × 10⁻³⁴ J • s)