fusion & delay. Fill in the blanks using the appropriate reaction type(fusion, f
ID: 1516885 • Letter: F
Question
fusion & delay. Fill in the blanks using the appropriate reaction type(fusion, fission, or decay)____________does not produce energy at a high enough rate to be useful for power generation__________requires far too high temperatures & pressures to be contained used for power Atoms produced from__________are extremely varied In chemical and nuclear properties resulting in a very hazardous mixture that is stored at high cost Concerned parents of Churchill High School students have complained that the Wi-Fi recently Installed In most classrooms might cause cancer in their children. While we probably can't conclusively say whether Wi-Fi increases risk of cancer or not, use your understanding of the photoelectric effect to argue whether or not Wi-Fi can cause cancer by directly breaking DNA molecule bonds answering the following questions. Given that Churchill's Wi-Fi produces microwaves with a frequency of 2.1 GHz (GHz = 10^6 Hz), bow much energy does each photon carry? Given 4 eV (6.4E-19 J) is required break a DNA bond which could lead to cancer-and assuming your is less than this-can a single photon from the Wi-Fi terminal break a DNA molecule apart? Yes no Can a combination of 1 million photons break a DNA bond? Why? Say a 65 eV photon struck your body and 4 eV is required to break a DNA bond, how many DNA bon single photon break? Why? a laser is shined down into a tank of liquid 48.5degree below horizontal and the light t so that it travels 60degree below horizontal through the liquid, which of theExplanation / Answer
a) E = h*nu = 0.13902*10^-20 J
b) As E < 4ev , so No
c) No, as 1 million photons may have collective enrgy which is very large, but only one photon alone has to have enrgy to break the bonds ( photoelectric effect analogy)
d) One photon can break only one bond, so just one dna bond
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