what would be the speed (v) of the dislodged electron in meters per second?

Calculate the wavelength(nm) of light that strikes a metal with a threshold frequency of 2.84 x 1014s-1 and ejects an electron with a kinetic energy of 5.48 x 10-19J.

What is the energy (in J) of a photon with a frequency of 7.23 × 10¹⁴ s⁻¹? (h = 6.626 × 10⁻³⁴ J • s)

2. A laser pointer used in the classroom emits light at 6550 A, at a power of 4.00 mW. (One watt is the SI unit of power, the measure of energy per unit of time. 1 W = 1 J/s). How many photons are emitted from the pointer in 115 seconds?

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?

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

Data for the photoelectric effect of silver are given in the table. Frequency of incident radiation (1015 s−1) Kinetic energy of ejected electrons (10−19 J) 2.00 5.90 2.50 9.21 3.00 12.52 3.50 15.84 4.00 19.15 Using these data, find the experimentally determined value of Planck's constant, h , and the threshold frequency, ν0 , for silver.

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?

A silicon (Φ = 7.77 × 10-19 J) surface is irradiated with UV radiation with a wavelength of 195 nm. Assume an electron was a mass of 9.11 x 10-31 kg. What is the frequency of incident radiation?  What is the speed of emitted electrons?  What is the kinetic energy of emitted electrons?  What is the wavelength of the emitted electrons?

In Einstein's photoelectric experiment, the kinetic energy (K.E.) of an electron displaced from a metal by a photon was the difference in energy between the photon and a threshold energy value for the metal. If you were to perform a similar experiment with the metal silver, which has a threshold energy of 7.43 × 10⁻¹⁹ J, and ultraviolet light of wavelength 45.5 nm, what would be the speed (v) of the dislodged electron in meters per second? (K.E. = 1/2mv². The mass of the electron = 9.109 × 10⁻³¹ kg.)