Q: If you wish to detect details of the size of atoms (about 1 × 10-10 m ) with electromagnetic…
A: Given data: The size of the atoms is s=1x10-10 m. The wavelength of the electromagnetic radiation…
Q: Consider the electromagnetic radiation inside a kiln, with a volume of 1 m3 and a temperature of…
A: Volume, V=1 m3 Temperature, T=1500 K Total energy of this radiation, U=8π5kT415hc3V where, k is…
Q: A diathermy machine, used in physiotherapy, generates electromagnetic radiation that gives the…
A: The frequency for diathermy,
Q: What pressure does light emitted uniformly in all directions from a 100-W incandescent light bulb…
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Q: The intensity of solar radiation at the top of Earth’s atmosphereis 1 370 W/m3. Assuming 60% of the…
A:
Q: 26 MHz radio waves penetrate to a depth of 14 cm, how far do 2.8 GHz microwaves penetrate?
A: Given : frequency of radio , f1= 26 MHz Depth, d1 = 14 cm Frequency of micro waves, f2= 2.8 GHz =…
Q: The average intensity of sunlight on Earth’s surface is about 700 W/m2 .(a) Calculate the amount of…
A: Given: Intensity, I =700 W/m2 Area, A = 0.5 m2 time, t = 4 h
Q: If emissivity of the body is equal to 1 and Stefan constant= 5.7x10-8 watt/m?. k°. when a person is…
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Q: A radio wave is an electromagnetic wave. Like all electromagnetic waves, it's speed is 3.00×108…
A:
Q: If the energy received by 2 m² area in 350 seconds is 4480 KJ. Find the value of Solar constant ?
A: Given data , Energy = E Time = t Area = A To find , Solar constant
Q: A lightbulb emits light uniformly in all directions. If the rmselectric field of this light is 16.0…
A:
Q: If the energy received by 6 m? area in 11 minutes is 4400KJ. Calculate the value of Solar constant ?
A: Given data : Energy = E Time = t Area = A To find :…
Q: intensity of sunlight is around 1330 W/m2 at the top of earth’s atmosphere. If the sunlight is all…
A: The sunlight falling on the top of Earth atmosphere exerts a normal force per unit area of the…
Q: If the energy received by 7 minutes is 4690KJ. 5 m² area in Calculate the value of Solar constant ?
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Q: In radiation heat transfer mechanism, no medium is required for electromagnetic waves to transfer…
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Q: A radar used to detect the presence of aircraft receives a pulse that has reflected off an object…
A:
Q: The average intensity of sunlight on Earth’s surface is about 700 W/m2. (a) Calculate the amount of…
A: Average intensity = 700 W/m2 Area, A = 0.5 m2 time, t = 4 h
Q: A radio wave is an electromagnetic wave. Like all electromagnetic waves, it's speed is 3.00×108…
A:
Q: The three types of radiation placed in order of increasing frequency are … a) gamma rays, radio…
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Q: Using your knowledge of radiation pressure, calculate the force of a laser beam striking a mirror…
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Q: What is the ratio between the electric current when the light intensity is 100% and when it is 50%?
A: Photoelectric effect is the phenomenon of emission of electrons from the surface of a metal when…
Q: A diathermy machine, used in physiotherapy, generates electromagnetic radiation that gives the…
A: The frequency of radiation diathermy machine is generating ,f =27.33 MHz =27.33 x 106 Hz The speed…
Q: What is the relationship between the radiation intensity and the distance of the source?
A: Intensity obeys inverse square law ie intensity of radiation varies inversely with the square of…
Q: For the location 32 N in November 2 if transmission coefficient t is 0.6 and the diffuse radiation…
A: Let Id be defined as the direct beam solar radiation. Therefore, Id=CIbN=CAexp-Bcosθz Here, IbN is…
Q: 43. (a) Show that the thickness X1/2 of an absorber required to reduce the intensity of a beam of…
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Q: The average intensity of sunlight on Earth’s surface is about 700 W/m2 . (a) Calculate the amount…
A: Intensity, I = 700 W/m2 Area, A = 0.5 m2 time, t = 4 h = 4 x 3600 s
Q: A radar wave reaches the target at a time of 2 x 10-4 sec. The corresponding radar range is
A: Given Information The target time taken by the wave is given as t = 2 x 10-4 s. Known…
Q: A soldier sees the flash from a cannon that is fired in the distance and 10 seconds later he hears…
A: The velocity of an object is define das the ratio of the displacement of the object to the time…
Q: What form of electromagnetic radiation can most effectively penetrate human tissue? O visible light…
A: Electromagnetic radiation with shorter wavelengths penetrates materials most effectively.
Q: If the energy received by 5 m? area in 10 minutes is 3890KJ. Calculate the value of Solar constant ?
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Q: An electromagnetic wave has a frequency of 12 MHz. What is its wavelength in vacuum?
A: λ=cf
Q: What is the wavelength of an electromagnetic wave whose frequency is 70.0 MHz ?
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Q: A radar used to detect the presence of aircraft receives a pulse that has reflected off an object…
A:
Q: A radar used to detect the presence of aircraft receives a pulse that has reflected off an object…
A: Given Let the total time taken ,a pulse that has reflected off an object(d) =5.5 * 10^-5 seconds we…
Q: Find the intensity of the total radiation falling on an object in which the diffuse radiation is…
A:
Q: If you wish to detect details of the size of atoms (about 1 × 10-10 m ) with electromagnetic…
A:
Q: Which of the following parameters is included in the expression for radiation heat current? * O…
A: Radiation heat current depends on Cross section area , temperature gradient
Q: If the energy received by 3 m2 area in 450 seconds is 4280KJ. Find the value of Solar constant ?
A: Given data : Area = A Time…
Q: Is it true that as the frequency decreases, the energy of the radiation increases?
A: No it is not true as the frequency decreases , the energy of radiation is also decreases ( E = h f…
Q: A certain radar installation that is used to track airplanes transmits electromagnetic radiation…
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Q: What is the frequency with the most intense radiation from the pot?
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Q: A radar wave reaches the target at a time of 2 x 104 sec, the corresponding radar range is
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Q: If a (10 mJ) laser pointer creates a spot that is 5 mm in diameter in a 30 second, determine the…
A: The energy of the laser pointer creates E = 10 mJ The diameter of the laser pointer d= 5 mm the…
Q: Find the intensity of the total radiation falling on an object in which the diffuse radiation is…
A:
If a
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- An earth-orbiting satellite has solar energy–collecting panels with a total area of 4.0 m2 . If the sun’s radiation is perpendicular to the panels and is completely absorbed, find the average solar power absorbed and the average radiation-pressure force.: At a distance of 100 cm the intensity of radiation per unit area is 400 mW/cm². What will the intensity be if the power meter is moved to a distance of 200 cm from the point source ?A B-emitting radiation source gives 250 units of radiation at a distance of 4.0 m. At what distance does the radiation drop to one-tenth its original value?
- The incident radiation on the earth's surface can be approximated by Ii = In cos 0, where In = 80 W/m2. sr is the total radiation intensity directed perpendicular to the surface. What is the total irradiation at the surface of the earth?(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 2.00 mm in diameter in 4.00 s? (b) Discuss how this intensity compares to the average intensity of sunlight (about 700 W/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.If the intensity of radiation from a radioactive sources is 3.6 units at a distance of 5.0 m, how many meters from thesource would you have to move to reduce the intensity to 0.34 unit?
- (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 clearlyThe intensity of solar radiation at the top of the Earth's atmosphere is 1 402 W/m2. Assuming 60% of the incoming solar energy reaches the Earth's surface and you absorb 50% of the incident energy, find the amount of solar energy you absorb if you sunbathe for 64 minutes. (Suppose you cover a 1.5 m × 0.3 m section of beach blanket and the elevation angle of the Sun is 60°.) 363398.9 Your response differs from the correct answer by more than 10%. Double check your calculations. JWhat is the frequency of the most intense radiation emitted by your body? Assume a skin temperature of 95°. Group of answer choices 1.81 x 10^13 Hz 6.43 x 10^14 Hz 1.65 x 10^13 Hz 3.18 x 10^14 Hz
- Solar radiation reaches Earth at a rate of about 1,400 W/m2. If all this energy were absorbed, what would be the average force exerted by radiation pressure on a square meter oriented at right angles to the sunlight?The intensity of solar radiation at the top of Earth’s atmosphereis 1 370 W/m3. Assuming 60% of the incoming solar energyreaches Earth’s surface and assuming you absorb 50% of theincident energy, make an order - of - magnitude estimate of theamount of solar energy you absorb in a 60 - minute sunbath.What area is needed for a solar collector to absorb 45.0 kW of power from the Sun's radiation if the collector is 75.0% efficient? (At the surface of Earth, sunlight has an average intensity of 1.00 × 10³ W/m².)