Q1: What is the primary process of converting solar energy into other form of energy, explain and give an example of each one of them?
Q: What are some other ways to save energy in a car besides turning off the air conditioner and rolling…
A: Saving energy is necessary not only for saving money but also for environment as the sources of…
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A: A solar energy source is a source of radiation from the Sun that can produce heat, cause chemical…
Q: 13. What is the equation for efficiency of jet propulsion?
A: To find : Equation for efficiency of jet propulsion.
Q: What will happen to the life on Earth in the absence of greenhouse gases?
A: Greenhouse Gases Some gases are there that trap heat in the atmosphere. They absorb and dischrage…
Q: A factory uses carbonic acid in its industrial processes so that 90% by weight is used in industry…
A: Only 90% using efficiently, remaining 10% emitting to atmosphere.
Q: A dam is used to store 700 tons of water to provide energy when needed by using turbines. If the…
A: Given, Mass of stored water (m) = 700 tons Height (h) = 60 m
Q: 2. What is v2/2 in the equation for a control volume in space? a) Potential energy per unit mass b)…
A: Answer: b Explanation: According to the 1st law of thermodynamics, the equation for the control…
Q: Example 2 What is the volume of air needed to burn 1000 m' of gaseous fuel containing methane 30%,…
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Q: 3. It is interesting to note that due to the liquid water content, the clouds can actually weight a…
A: Given : Volume that cloud holds = 1km3 Liquid water content = 0.7 g/m3
Q: The world carbon emissions can be expressed by the following equation: Carbon emissions =…
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Q: One kilowatt equals how many watt-hours?
A: Kilo means thousand.
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Q: Reducing emissions from all greenhouse gas can help produce a carbon neutral result through energy…
A: Carbon neutrality refers to having a balance between emitting carbon and absorbing carbon from the…
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A: Mechanism of heat exchange in the human body- As we know that that the environment is not…
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A: Brief concept introduction- The second law of thermodynamics- According to the second rule of…
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A: Carbon emission is one of the main reasons leading to the pollution of the environment. The energy…
Q: Choose which of the following statement is false. O a. Saving electricity will help preserve our…
A: The false statement is --> Electricity is a primary source of energy that provides lights to our…
Q: Besides energy savings, what are other advantages that observation of daylight saving time may…
A: The answer is below:
Q: Heat can transfer from one body to another in three modes, namely through conduction, convection and…
A: Solution: There are generally three modes by which heat can transfer from one body to another. The…
Q: A bat is flitting about in a cave, navigating via ultrasonic bleeps. Assume that the sound emission…
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Q: Light from a chromatic light source strikes a surface. Seventy percent of the light is reflected and…
A: (1) It is required to determine the percentage of light transmitted. % Transmit=100-% Reflected+%…
Q: What is the mass (g) of Air? (2 sig figs)
A: The molar mass of dry air is
Q: 4. A body cools from 60 degrees Celsius to 50 degrees Celsius in 5 minutes. How much time will it…
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Q: Wells, ponds, rivers or springs are traditionally used for different purposes and they may not be…
A: 1. Since the average annual rainfall is very less which is 250 mm to 750 mm annually, the most…
Q: 2. A refrigerator has COP of 3.2. How much work must be supplied to the refrigerator in order to…
A: The given data is shown below: COP=3.2Heat energy=320 J
Q: The lifetime of a lightbulb in a certain application is normally distributed with mean μ = 1400…
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Q: So, what is the relationship between solar cells and global positioning systems (GPS)?
A: This question has been taken from surveying
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Q: During a camping trip, you see a 30-cm-diameter plastic pipe carrying water from a high reservoir to…
A: The given data is Diameter of plastic pipe d=30 cm=0.3 m Elevation difference70 m Formula used…
Q: Relate the importance of participating in outdoor activities in your profession (Engineering).…
A: Brief concept introduction- Outdoor activities- Outdoor activities are those that take place outside…
Q: Question#1\\ Drive the equation of energy.
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Q: ! Required information Sometimes equations can be developed and practical problems solved by knowing…
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Q: Discussion: - 1. Does the distance travelled by the center of gravity of the Maxwell's disc depend…
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Q: 3b. Suppose the total world energy consumption of fossil fuels equal to 3 x 107 KJ/yr, were to be…
A: Total world energy consumption - 3×107 KJyr Combustion of petroleum releases energy = 43×103 KJKg
Q: To reduce the drag coefficient and thus to improve the fuel efficiency of cars, the design of side…
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Q: 2. The main elevator of the CN tower in Toronto rises about 350 m and for most of its run has a…
A: Given:- The rise in the height of the main elevator = 350 m The constant speed of the elevation =…
Q: Into how many time zones are the United States and its territories divided?
A: A time zone is a region where people live and work according to a common standard time. Because it…
Q: Convert 16 ft per second to kilometers per hour. Step by step.
A: Convert ft per second to meter per second 1ft=0.3048 m so 16ft/sec= 16*0.3048 m/sec = 4.8768 m/sec
Q: One musical instrument is set to produce sound of varying fundamental frequencies whose maximum…
A: Given : One musical instrument is set to produce sound of varying fundamental frequencies whose…
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- A point source emits 200 radiant watts and has a luminous efficacy of 120 lumens/watt. Itsspatial distribution is spherically uniform. state any assumptions, check answer w bold text. a) What is the luminous intensity of this source? 1910 cdb) What is the average illuminance on a unit sphere centered around the point source? 6000/pii lx or fcc) What is the illuminance at point p at the center of circular surface A? 212 Ixd) If surface A has a radius of 2 m, what is the illuminance at point q? 122 lxf) what is the total number of lumens incident onto surface a? ~2015lmg) The total reflectance of surface A is 0.50. What is the average exitance of surface A? 80 Im/m2In the solar energy budget shown; Space Outgoing Radiation (%) 100% 8 17 6 9 40 20 Incoming Radiation Backscattered by air Emission by clouds Emission 19 by water vapor, carbon dixoide, Absorbed by water vapor, dust, ozone Reflected by clouds ozone Atmosphere Latent Absorption by clouds, water vapor, carbon dixoide, heat transfer Absorbed ozone Sensible by clouds heat Reflected by surface transfer 46 Absorbed Longwave Land. Ocean radiation A. How much in percent is the total albedo? B. How much in percent is the albedo due to the land surface? C. Out of 100 Solar photons shown, how many were reflected by earth in total? D. Out of 100 Solar photons shown, how many were absorbed by earth in total? E. How much in percent is the albedo due to clouds, land, and atmosphere?A 2 x 2 m flat plate solar collector for domestic hot water heating is shown in the figure. The incident solar radiation on the glass cover, which transmits 90% of the incident flux, is 750 W/m2. Water flows through the tubes soldered to the backside of the absorber plate, entering at a temperature of 25°C. The temperature of the glass cover is 27°C, and it radiates heat with an emissivity of 0.92 to the sky at –50°C. Additionally, the glass cover losses heat by convection to air at 20°C flowing over its surface at 30 km/h. Assume that the radiation heat transfer between the absorber plate and glass cover and the heat transfer through the back and sides of the collector is negligible.
- S 3) A 60-kW radio transmitter on Earth sends its signal to a satellite 100 km away (below). At what distance in the same direction would the signal have the same maximum field strength if the transmitter's output power were increased to 90 kW? 1/10/2022 Dr AQEEL SAUM RaluCalculate the value of f in meters in the manometer provided below. a 3m b 4.5m C 5.5m d 2.5m e 4.5m Air 5.5kPa Kerosene 8.5kN/m^3 1191 b O11C ---- C- Air Oil Kerosene Water MercuryMECHANICS 5 Find the Seight to be raised of box 8 man 30kg to gain potential energy of 30005
- 3000 lm illuminates a 150 sq.ft. Determine the average E. 4000 lm illuminates a 200 sq.ft. Determine the average E. Please put the complete solution and explanation Thank you!6.9. A ground-level source (H=0) is emitting pollutants at an unknown rate; u = 3 m/s. At I km directly downwind of the source the measured ground-level concentration of the pollutant is 10 ug/m?. The stability category is A. Estimate the emission rate of this source.A missile as freely without of fuel in the location as shown in figure.2, calculate 1- Additional bright to reach it 2. Corresponding time to reach it V-800 D
- A light house is just visible above the horizon from a ship. The height of light house is 150 m. find out the correct distance (in meter) between the ship and the light house.Calculate Pa-Pb in the manometer belowTo maintain a dwelling steadily at 68°F on a day when the outside temperature is 40°F, heating must be provided at an average rate of 300 Btu/min. Determine the electrical power required, in kW, to deliver the heating using: (a) electrical-resistance heating, (b) a heat pump whose coefficient of performance is 3.5, (c) a reversible heat pump operating between hot and cold reservoirs at 68°F and 40°F, respectively. Part A Determine the electrical power required, in kW, to deliver the heating using electrical-resistance heating. W₁ = i kW