Molybdenum metal must absorb radiation with a minimum frequency of

$$1.09 \times 10 ^ { 15 } \mathrm { s } ^ { - 1 }$$

before it can eject an electron from its surface via the photoelectric effect. What wavelength of radiation will provide a photon of this energy?

Molybdenum metal must absorb radiation with a minimum frequency of $\pu{1.09 \times 10^{15} s-1}$ before it can eject an electron from its surface via the photoelectric effect.

What is the minimum energy needed to eject an electron?

A diode laser emits at a wavelength of 987 nm. In what portion of the electromagnetic spectrum is this radiation found?

The speed of sound in dry air at $20 ^ { \circ } \mathrm { C }$ is 343 m/s and the lowest frequency sound wave that the human ear can detect is approximately 20 Hz. What would be the frequency of electromagnetic radiation with the same wavelength?

One type of sunburn occurs on exposure to UV light of wavelength in the vicinity of 325 nm. These UV photons can break chemical bonds in your skin to cause sunburn-a form of radiation damage. If the 325-nm radiation provides exact ly the energy to break an ave rage chemical bond in the skin, estimate the average energy of these bonds in kJ/mol.

The speed of sound in dry air at $20 ^ { \circ } \mathrm { C }$ is 343 m/s and the lowest frequency sound wave that the human ear can detect is approximately 20 Hz. What is the wavelength of such a sound wave?

What wavelength of radiation has photons of energy

$$6.06 \times 10 ^ { - 19 } \mathrm { J? }$$

Use a graphing utility to find the multiplicative inverse of each matrix. Check that the displayed inverse is correct.

One type of sunburn occurs on exposure to UV light of wavelength in the vicinity of 325 nm. What is the energy of a mole of these photons?

One type of sunburn occurs on exposure to UV light of wavelength in the vicinity of 325 nm. What is the energy of a photon of this wavelength?

Calculate the energy of a photon of electromagnetic radiation whose frequency is 2.94 *10 ^ 14 s^(-1).

Calculate the energy of a photon of electromagnetic radiation whose frequency is $2.8 \times 10^{14}\, \mathrm{Hz}$.

A laser pointer used in a lecture hall emits light at 650 nm. What is the frequency of this radiation? predict the color associated with this wavelength.

A laser pointer used in a lecture hall emits light at 650 nm. What is the frequency of this radiation?