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Compute for the following wavelength of the following frequency:
5. 50Hz
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- You are working in a shop and are responsible for enacting the CoVID protocols before potential customers enter the shop (shoppers are not to be admitted if they have a temperature over 38.0°C). Unfortunately, the equipment you have been given to measure a person's temperature reports their peak wavelength instead. If a person has a peak wavelength of 9.320 μm, are they allowed to enter the store? A full solution must support your answer.Calculate the energies of the following waves (in kilojoules per mole) An FM radio wave at 96.5 MHz and an AM radio wave at 1100 kHz Enter your answers numerically separated by a comma. ΕΧΕΙ ΑΣΦΑ EPM, EAM 1.06 10-47,1.21 10-49 Submit ° Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining ▾ Part B ? kJ/mol An X ray with 3.40×10-9 m and a microwave with A=6.67×10-2 m. Enter your answers numerically separated by a comma. ΜΕ ΑΣΦ 0 ? 49 Ex-ray, Eairo 9.71 10 40,4.95 101 Submit Previous Answers Request Answer remaining kJ/molCopper has a conductivity of 5.8 x 10^7 Siemens/m. A 0.5 volt amplitude, 10 MHz wave travelling in the z-direction in a copper slab has a time-averaged power of: # 300 х ехp(-96х10^3 x z)az Watts/m^2 # 300 х ехp(-96х10^-3 x z)az Watts/m^2 # 300 x exp(-96x10^2 x z)az Watts/m^2 # 300 х ехp(-96х10^-2 x z)az Watts/m^2 # 150 x exp(-96x10^3 x z)az Watts/m^2 # 150 x exp(-96x10^-3 x z)az Watts/m^2 # 150 x exp(-96x10^2 x z)az Watts/m^2 # 150 x exp(-96x10^-2 x z)az Watts/m^2 #75 х еxp(-96х10^3 x z)az Watts/m^2 # 75 x exp(-96x10^-3 x z)az Watts/m^2 #75 х еxp(-96х10^2 x z)az Watts/m^2 #75 х ехp(-96х10^-2 х z)az Watts/m^2
- r(cm) P(mW) 2.2 15 O. 4 20 25 O. 2 3- Plot agraph between power and distance.The star Sirius is much hotter than the sun, with a peak wavelength of 290 nm compared to the sun’s 500 nm. It is also larger, with a diameter 1.7 times that of the sun. By what factor does the energy emitted by Sirius exceed that of the sun?(a) What is the intensity in W/m² of a laser beam used to burn away cancerous tissue that, when 90.0% absorbed, puts 500 J of energy into a circular spot 2.3 mm in diameter in 3 s? 2 W/m (b) Reflect on how this intensity compares to the average intensity of sunlight (about 1W/m²) and the implications that would have if the laser beam entered your eye. Note how your answer depends on the time duration of the exposure. The intensity of a laser is abc lasers can be very damaging 100 1,000 10E7 - 10E8 10E12 times that of the sun, so clearly
- Scientists are working on a new technique to kill cancer cells by zapping them with ultrahigh-energy (in the range of 1.00×1012 W) pulses of light that last for an extremely short time (a few nanoseconds). These short pulses scramble the interior of a cell without causing it to explode, as long pulses would do. We can model a typical such cell as a disk 5.00 μm in diameter, with the pulse lasting for 4.00 ns with an average power of 2.00×1012 W. We shall assume that the energy is spread uniformly over the faces of 100 cells for each pulse. I 1.00×1021 W/m² Submit Previous Answers Part C Correct What is the maximum value of the electric field in the pulse? ΜΕ ΑΣΦ Emax Submit Request Answer Part D ? V/m What is the maximum value of the magnetic field in the pulse? ΜΕ ΑΣΦ Bmax = Submit Request Answer ? TThe shortest wavelength emitted by a bat is about 3.30 mm. The corresponding frequency is __________hw 2 Laser beams are sometimes used to burn away cancerous tissue. What is the intensity, in watts per square meter, of a laser beam that is 90.0% absorbed by a 2.1-mm diameter spot of cancerous tissue and must deposit 515 J of energy to it in a time period of 4.05 s?
- Calculate the average wavelength associated with an 150.0 lb athlete who covers 115 m in minute.A high-energy pulsed laser emits a 1.1-ns-long pulse of average power 1.5×1011 W. The beam is nearly a cylinder 2.3x10-3 m in radius and it travels in free space. ▼ Determine the energy delivered in each pulse. Express your answer to two significant figures and include the appropriate units. AU = Submit Part B Erms = Submit Value Provide Feedback μA Determine the rms value of the electric field. Express your answer to two significant figures and include the appropriate units. Request Answer O ■ μA Value Units Request Answer ? Units ?A laser beam has an average intensity, S = 8,005.9 W/m2. What is the magnitude of the rms magnetic field, Brms in mT, component of the electromagnetic waves emitted by this laser? 1.0 mT = 10-6 T. Please round your answer to one decimal place. Equations: cB2 S= TIMS Ho H₂=47x10-¹Tm/ A c= 3.0x108 m/s