solar
Q: A fluorescent tube has a power rating of 52 W. It is also left on for 3 hours, and 92 170 J of…
A: Efficiency is a measure of how well a device converts input energy into useful output. In the…
Q: 4. Data for a flat-plate collector used for heating are given below: Specification Coimbatore 11°…
A: Flate plate collector Heat transfer is the foundation for a flat plate collector's functioning. The…
Q: Draw a figure of the line that best fits the experimental data in the table(showing experimental…
A: Given, Room temperature=25ºC The best fit line to the experimental data: X axis = 1 unit = 5 °C Y…
Q: Calculate the amount of time it would require for 1eV of energy to be absorbed by an atom in a metal…
A: Here we have,
Q: Suppose that a 0.85 cm thick part of gold, which originally contains 1200 silver atoms for every…
A: Given,Thickness t=0.85cmsilver atom Ns=1200Gold atom Ng=5600After dopping silver atom Ns'=3200
Q: As shown below, an insulated gold wire is immersed in 466 g of water at 22 °C. The wire is 4.9 cm…
A: The mass of the water is given as, m=466 g (or) m=0.466 kg. The initial temperature of the water is…
Q: What is the root mean square velocity, vrms, for Helium atom (He) at 22oC? Hint: How many amu…
A:
Q: .Calculate the specific absorptivity if the absorbance, A is 0.209, the path length of solution, b,…
A: (a) Given the absorbance of the solution is A = 0.209 The path length of the solution is b = 1 cm.…
Q: onsider a simple 20. m2 rooftop installation of crystalline-silicon (c-Si) PV modules. Remember that…
A:
Q: The amount of radiant energy emitted by a surface is given by q = ɛ0 AT+ where q represents the rate…
A: Dimensional Analysis Dimensional Analysis is a method of studying the dimensions of complex physical…
Q: What is the relationship between the length of the face diagonal and the radius, r, of the atoms in…
A:
Q: Calculate the square footage of solar panels required for a 1KW system for AM 1 and AM 1.5 if panel…
A: Given:- capacity of solar system = 1 KW efficiency of solar system 18% Find :- The square footage…
Q: Determine the wavelength of the maximum amount of radiation emitted by surface at 49 °C. Express…
A:
Q: A water sample was analyzed by an .15 mission spectroscopic method (slope of he calibration graph =…
A: Solution: As per the given data, We know that, The formula for analytical sensitivity is…
Q: What (X-ray based) analytical technique would you use if you wanted to precisely measure the…
A: To precisely measure the chemical composition of a small micron-sized area in a crystal, one…
Q: Assume that the efficiency of the portable solar panel shown in the figure is 19%. (a)(a) What is…
A:
Q: (a) Cherry-red embers in a fireplace are at 850ºC and have an exposed area of 0.200 m2 and an…
A: Given:- To calculate the rate at which heat transfer by radiation by the…
Q: 1) a) A wire sample (1 mm in diameter by 1 m in length) of an aluminum alloy (containing 1.2% Mn) is…
A:
Q: Estimate the angle made by rays radiation with the normal to a PV cell on 1 Dec at 9:00 am solar…
A: To estimate the angle made by the rays of radiation with the normal to a PV cell on December 1st at…
Q: Compute the heat flux integral Φ Þ= √¶·¹ q.nds, where S is the surface of a cylinder of length L = 1…
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Q: calculate the lighting efficiency of this bulb and determine whether this is more or less efficient…
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Q: A diver 60 mm deep in 10∘C∘C fresh water exhales a 1.5 cmcm diameter bubble. What is the bubble's…
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Q: Many years ago a string of Christmas tree lights was manufactured in the form shown in (a). Today…
A: Fig (a), shows that all the light are connected in series, therefore there is one path way for the…
Q: Engineering Application - A device called an insolation meter is used to measure the intensity of…
A:
Q: A filter material has a porosity of 0.75 and the Filter Path length is 2 mm. The dia of individual…
A: Calculate the total Single fiber efficiency by the following equation. E=1-exp-2αEεhπ1-α rf…
Q: What is the lowest temperature that will cause a blackbody to emit radiation that peaks in the…
A:
Q: (a) Cherry-red embers in a fireplace are at 850ºC and have an exposed area of 0.200m2 and an…
A: The net heat transfer by time,
Q: en 2 atoms. How much amper(A) is needed to obtain 5.8x10-19 joules of electro volts(eV)? HW-8: Find…
A: Given:- The resistance is R = 0.8 ohm between the two atoms. The Energy needed to obtain is…
Q: An infrared heater for a sauna is operated at a power of {352} W and has an emissivity of {0.9}. If…
A: According to Stefan’s law, the power of emission (rate at which energy is emitted) from a source is…
Q: What is the half-value layer (HVL) for a material with attenuation coefficient of 0.7/cm? * 0.99 cm…
A: The attenuation constant is given by μ=0.7 /cm
Q: Thermal emission from forehead. Noncontact thermom- eters are used to quickly measure the…
A: The thermometer measures the temperature of the person by measuring the amount of radiation in the…
Q: Imagine choosing between two winter jackets. Assume you have access to a heat-generating mannequin…
A: Given: In order to generate a temperature difference (T), an insulation product must be placed…
Q: Calculate the amount of time it would require for 1eV of energy to be absorbed by an atom in a metal…
A: Given,
Q: For a total PV module of 25m2, what would be the PV power for each if conversion efficiency is 15%…
A: The area of the PV module is, A=25 m2. The conversion efficiency is, e=15%=0.15.
Q: (a) Cherry-red embers in a fireplace are at 850C and have an exposed area of 0.200 m2 and an…
A: Using Stefan’s law, P=eσAT14-T24 In this case, half of the total energy enters the room,…
Q: What is the rate of heat transfer by radiation from the skin of a person standing in a dark room…
A: Given that the value of ambient temperature and surface area and emissivity of skin and temperature…
Q: Find the theoretical Debye temperature of iron (Fe) if the speed of sound in Fe is 5130 m/s and its…
A: According to the given data we obtain the debye temperature 669K.
Q: The below shown graph is drawn from the tabulated values of brass which we measured during the…
A: x1= 6 cm; y1= 45.5 C x2= 6.8 cm; y2= 38 C Difference in temperature (dT)=y2 - y1 =38-45.5…
Please estimate the solar cell efficiency of the profile listed below under standard solar illumination. (solar cell area= 2cm?)
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