What is the photon energy corresponding to the wavelength

Reference no: EM13982980

Exposure to a sufficient quantity of ultraviolet will redden the skin, producing erythema ?a sunburn. The amount of exposure necessary to produce this reddening depends on the wavelength. For a 1.0 cm² patch of skin, 3.7 mJ of ultraviolet light at a wavelength of 254 nm will produce reddening; at 300 nm wavelength, 13 mJ are required.

Part A

What is the photon energy corresponding to the wavelength of 254 nm?

Part B

What is the photon energy corresponding to the wavelength of 300 nm?

Part C

How many total photons with the wavelength of 254 nm produce this reddening of the 1.0 cm² of the skin?

Part D

How many total photons with the wavelength of 300 nm produce this reddening of the 1.0 cm² of the skin?

Reference no: EM13982980

Questions Cloud

Identification numbers to the patient files : Describe how you would attach identification numbers to the patient files; for example, how many digits (and which digits) would you use to indicate the first patient file?

Prepare a run chart and scatter chart : Using the following data, prepare a run chart, scatter chart, and control chart. A late surgery is defined as any surgical operation that was started more than 30 minutes after its scheduled time (Table 14-4)

How many degrees of freedom will there be : what type of test will I have? How many degrees of freedom will there be - what type of test will I use? How many degrees of freedom will there be?

Define the population of interest : The National Park Service has started charging a user fee to park at selected trailheads and crosscountry ski lots. Some users object to this fee, claiming they already pay taxes for these areas. The agency has decided to randomly question selecte..

What is the photon energy corresponding to the wavelength : What is the photon energy corresponding to the wavelength of 254 nm? What is the photon energy corresponding to the wavelength of 300 nm?

Problem regarding the population of people : Describe how systematic random sampling could be used to select a random sample of 1,000 customers who have a certificate of deposit at a commercial bank. Assume that the bank has 25,000 customers who own a certificate of deposit. Explain why a ce..

What type of radiation would imagine having most discrepancy : What type of radiation would you imagine having the most discrepancy? Explain why there might be discrepancies for the different types of radiation.

A random sample of 50 drives from 50 golfers yields : 8. (TCO D) It seems like professional golfers are hitting their drives longer and longer each year. A random sample of 50 drives from 50 golfers yields the following.Sample Size = 50 golfersSample Mean = 295 ydSample Standard Deviatio

A critic of brooklyn college states : A critic of Brooklyn College states that the mean high school GPA of newly admitted freshmen is 80. You run a hypothesis test to show that the true population mean is different from 80. Using the t-test table, and an alpha-level of 0.05, and the ..

User Account

All Pages