A person does not apply sunscreen and has 0.43 m2m2 of skin exposed to the sun for 1.00 hh. Calculate the total energy (in joules) absorbed by the skin. Assume there are 3.066×1021 photons/(m2⋅s)photons/(m2⋅s) (photons per square meter-second). Assume an average wavelength of 320 nmnm to calculate the energy of a UV photon. Assume that half of the photons that strike the skin are reflected. Express the energy in joules to three significant figures

Q: The heat of fusion of ice is 6.00 kJ/molkJ/mol. Find the number of photons of wavelength = 7.20×10−6…

A: Given information: Heat of fusion = 6.00 kJ/mol Mass of ice = 4.40 g Wavelength = 7.20×10-6 m

Q: laser pulse at 500. nm contains 4.95 mJ of energy. How many photons are in the laser pulse

A: E = nhv  E is energy n is number of photons h is planck's constant  v is frequency and it is ratio…

Q: Enter your answer in the provided box. How much more energy per photon is there in green light of…

A:

Q: In his explanation of the threshold frequency in the photoelectric effect, Einstein reasoned that…

A: The relationship between the longest wavelength of radiation which can cause the photoelectric…

Q: A certain microwave oven delivers 750 watts (J/s) of power to a coffee cup containing 35.1 g of…

A: Time taken and energy of photon is calculated for given

Q: Enormous numbers of microwave photons are needed to warm macroscopic samples of matter. A portion of…

A: The energy required is given by, E=m.C.∆T where m is the mass, C is the specific heat and ∆T is the…

Q: When a metal was exposed to photons at a frequency of 1.10 x 1015 s-, electrons were emitted with a…

A:

Q: Tropospheric ozone is produced when UV light interacts with gas particles near the earth's surface.…

A: Tropospheric ozone is produced when UV light interacts with gas particles near the earth's surface.…

Q: What is the speed of an electromagnetic wave with a frequency of 1.33 × 1 0 17 Hz and a wavelength…

A: The product of wave length and frequency of the wave gives the speed of electromagnetic wave. Write…

Q: What is the frequency of a photon with a wavelength of 3.22 x 10-5 m?

A: The frequency of a photon with a wavelength of 3.22 x 10-5 m can be calculated as

Q: Calculate the energy per mole of photons in kilojoules that has a frequency of 8.21 x 1012 sec-1 .

A: Since the frequency of each photon is given  And we know that the energy of photon is given by  E =…

Q: A foolish man attempted to rob a bank but only brought his red laser pointer, with a wavelength of…

A:

Q: You are given the kinetic energy of ejected electrons as a function of wavelength for three…

A: It states that when a radiation of sufficient frequency strikes a metal surface, ejection of…

Q: How fast must a 148 g baseball travel in order to have a de Broglie wavelength that is equal to that…

A: de-Broglie wavelength(L) = 100 pm 1 pm = 10-12 m So, L = 100×10-12 = 10-10 m Mass(m) = 148 g = 0.148…

Q: A blu ray player uses a 40mW (=0.030J/s) laser diode that emits 4.04 x 10^20 photons during a 110…

A: Power = 0.030 J/s  Time = 110 minute = 110 x 60 = 6600 sec  Energy (E) = P x t = 0.030 x 6600 = 198…

Q: A laser pulse with a wavelength of 515 nm contains 4.40 mJ of energy. How many photons are in the…

A: In the realm of quantum physics, light is not just a continuous wave but is composed of discrete…

Q: Given the relationship between wavelength, frequency and the speed of light, calculate the frequncy…

A:

Q: What is the energy of a mole of X-ray photons that has a wavelength of 6.17 x 10-7 m?

A:

Q: 2) Based on your knowledge of the Electromagnetic Spectrum, what are the differences between…

A: Electrons can behave as a particle as well as wave. The dual nature of electron was explained by De…

Q: Calculate the energy of the photon with a wavelength of 700 nm in kJ/mol.

A: The objective of this question is to calculate the energy of a photon with a given wavelength in…

Q: A bank robber forgot his tools, and only brought a red laser pointer, with a wavelength of 650. nm.…

A: We have to calculate the number of photons required.

Q: How fast must a 139.3−g baseball travel in order to have a de Broglie wavelength that is equal to…

A: de Broglie's wavelength is given by the formula  λ = hmv λ = wavelength h = Planks constant =…

Q: A liquid is exposed to infrared radiation with a wavelength of 3.14 x 10^-4 cm. Assume that all the…

A: Given : Wavelength of photon = 3.14 X 10-4 cm = 3.14 X 10-6 m                              (since 1…

Q: How fast (in m/s) must a 0.882 lbs. football travel to have a de Broglie wavelength equal to a…

A: The De Broglie wavelength is given by  where λ = wavelength in m  h = Plank's constant = 6.626 X…

Q: If the frequecy of a photon is 6.14 x 1015 Hz, what is it's wavelength in nm (nanometer

A: This problem can be solved by using the formula :                                         c=νλwhere…

Q: Calculate the wavelength of the photon that would be released during a transition from n = 3 to n =…

A:

Q: The power of a red laser (A = 630 nm) is 4.00 watts (abbreviated W, where 1W = 1 J/s). How many…

A: The photon is composed of electromagnetic waves. They are electric fields travelling in space.…

Q: Cy-dye has multiple applications in biological imaging. The energy of the photons emitted by Cy-dye…

A:

Q: The energy of light photons varies with wavelength. Calculate the energy per mole of photons for…

A: The energy of light photons is calculated using the below formula.

Q: What is the energy of a photon in kJ that has a wavelength of 180 mm?

A:

Q: Calculate the energy of a photon of wavelength 45.8 nm. (Hint: Use Plank’s constant)  4.42 x 10-3 J…

A: The relationship between the energy and wavelength of photon is  where h = Plank's constant = 6.626…

Q: In Einstein's photoelectric experiment, the kinetic energy (K.E.) of an electron displaced from a…

A: When we energy of Photon to metal then electron which have minimum energy tha is equal to threshold…

Q: 9.) The absorption peaks of chlorophyll a are at 665 nm and 465 nm. Assume that a plant can convert…

A: Given: The wavelength of each photon is 665 nm and 465 nm.

Q: What is the power in Watts (J/s) of a research laser that emits light at a wavelength of 555 nm and…

A: Electromagnetic radiations Electromagnetic radiations are the collection of different forms of…

Q: Calculate the energy of the photon with a wavelength of 600 nm in kJ/mol.

A: The objective of this question is to calculate the energy of a photon with a given wavelength in…

Q: 1 watt = 1 J/s. If a laser produces 20.0 milliwatts of red light, and 2.29E20 photons are emitted b…

A: Given is no. of photons and power and wavelength is asked.

Q: Calculate the maximum wavelength, Amax, of electromagnetic radiation that could eject electrons from…

A: Work function = 8.76 x 10-19 J Speed = 4.14 X 106 m/s

Q: What is the energy of a photon of ultraviolet radiation with a wavelength of 3.00 x 10 ^-7 m?

A:

Q: Calculate the energy of a 532 nm wavelength photon. h = 6.626 × 10-34 Js c = 3.00 × 108 m/s

A: Equation used for finding energy of photon, E=hc/λ

Q: What is the energy of a photon of light with a wavelength of 2.00cm?

A: Given that,

Q: When a metal was exposed to photons at a frequency of 1.31 × 105 s-', electrons were emitted with a…

A:

Q: Titanium (Φ = 6.94 ×× 10–19 J) and silicon (Φ = 7.77 ×× 10–19 J) surfaces are irradiated with UV…

A: Titanium (Φ = 6.94 ×× 10–19 J)  Silicon (Φ = 7.77 ×× 10–19 J) λ = 243 nm = 243 x 10-9 m