Which of the following is closest to the frequency of the light with photon energy of 3.3 x 10-19 J? A 5.0 x 10-53 s-1 B. 5.0 x 10 1 s -16 5.0 x 1014 s-1 5.0 x 1052 s-1

The work function (φ) for a metal is the amount of energy needed to eject an electron from the surface of the metal via the photoelectric effect. For nickel φ = 8.25 x 10-19J. Will a photon with a wavelength (λ) of 250.0 nm have enough energy to eject an electron from nickel?  If the speed of an electron in the n = 4 energy level of a hydrogen electron is 2.3 x 106 m/s, what is the de Broglie wavelength of this electron in nanometers (the mass of an electron is 9.10938 x 10-31 kg). Note: 1 ? = 1 ?? ∙?2 An F-15 Strike Eagle weighs in at roughly 32,000 kg fully loaded. If an F-15 Eagle is traveling at 3,017 kilometers per hour, what is the de Broglie wavelength associated with the aircraft at this speed in nanometers?

The minimum frequency of light needed to eject electrons from a metal is called the threshold frequency, ?0. Find the minimum energy needed to eject electrons from a metal with a threshold frequency of 3.20×1014 s−1. With what maximum kinetic energy will electrons be ejected when this metal is exposed to light with a wavelength of 285 nm?

If a laser emits 5.4 x 1019 photons per second and transfers a total of 87.06 J of energy over 1.93 seconds, what is the wavelength of the emitted light in nm?

The electron in an (unbound) hydrogen atom (H(g)) is excited from the ground state to the n=3 state.Which of the following statements are true and which are false. 1. it takes less energy to ionize the electron from n=3 than it does from the ground state.2. The wavelength of the light emitted when the electron returns to the ground state from n=3 is the same as the wavelength of light absorbed to go from n=1 to n=3.3. the electron is farther from the nucleus on average in the n=3 state than in the ground state.4. The first excited state corresponds to n=3.5. The wavelength of light emitted when the electron drops from n=3 to n=2 is shorter than the wavelength of light emitted if the electron falls from n=3 to n=1.

A metal surface has a threshold energy of 225 kJ/mol. After being exposed to light with frequency 7.3 × 1014 Hz , with what velocity will electrons be ejected?

Determine the energy of a photon, in J, with a wavelength of 294 nm. (h = 6.626 × 10⁻³⁴ J • s and c = 3.00 × 10⁸ m/s) What is the energy (in J) of a mole of photons that have a wavelength of 681 nm? (h = 6.626 × 10⁻³⁴ J • s and c = 3.00 × 10⁸ m/s)

If a laser emits 5.0 x 1019 photons per second and transfers a total of 80.58 J of energy over 2.06 seconds, what is the wavelength of the emitted light in nm?

The minimum energy required to remove an electron from a certain metal is 3.7 x 10– 19 J. If the metal surface is struck by light having a wavelength of 5.00 x 102 nm, what is the kinetic energy of the electron ejected from the metal?

An electron in a hydrogen atom falls to the n=2 energy level and emits a photon with a wavelength of 410.0 nm. What was the electron's initial energy level?