Explain the movement of waves, including light and sound waves.

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1) Using a method of your choice; Explain the movement of waves, including light and sound waves.

2) Produce a scientific poster explaining how the Eye and the Ear work

 

Discuss the changes that might occur in this value overthe life-time of the radiator, and the causes of them.

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A test is carried out to determine the overall heat transfer coefficient in a new automotive radiator that is a compact cross-flow water-to-air heat exchanger with both fluids (air and water) unmixed. The radiator has 40 tubes of internal diameter 5 mm and length 650 mm, in a closely spaced plate-finned matrix. Hot water enters the tubes at 90°C and a rate of 0·6 kg/s and leaves at 65°C. Air flows across the radiator through the interfin spaces and is heated from 20°C to 40°C.

(a)Determine the overall heat transfer coefficient, Ui, of this radiator based on the inner surface area of the tubes.20

(b)Explain why the required value of Uiis based on water side, rather than the air side.

(c)Discuss the changes that might occur in this value overthe life-time of the radiator, and the causes of them.

Explain which of the two bodies will emit more radiation in the shorter-wavelength region

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Consider two identical bodies, one at 5000 K and the other at 2000 K. With the aid of a suitable diagram, explain:(a)Which of the two bodies will emit more radiation in the shorter-wavelength region.8(b)Which of the two bodies will emit more radiation at a wavelength of 20 μm.

Explain the linear approximation of Einsteins field equations and their analogy to the Maxwell Equations.

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The analogy of gravitation and electromagnetism has a long history. Please explain the linear approximation of Einsteins field equations and their analogy to the Maxwell Equations. Please also explain several experiments that have been done to explore this effect as Gravity Probe B. Please carefully check the available references which have been uploaded below.

What is the formula for debt capacity

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what is the formula for debt capacity

Pretend you are writing to your potential boss who is looking to hire someone for your all time dream job that pays $250,000/yefktar to start, plus stock options.

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Must be on the forces in physics used in soccer(kicking the ball and long jump
You need to turn in a 750 word (about 1.5 pages), 12 point font, single spaced, typed ) Term Paper describing the thought process and science behind your topic. You may single space.
a. Critical thinking—use your claim-evidence-reasoning. Remember your 9 & 10 grade science
b. Your use of physics equations
c. Well researched paper showing that you learned a significant amount of physics. Higher grade if you teach me something
d. Pretend you are writing to your potential boss who is looking to hire someone for your all time dream job that pays $250,000/yefktar to start, plus stock options.

Compare and contrast light and sight

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Compare and contrast light and sight

Determine, in the triple point, the corresponding latent heat of fusion.

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1) Reduce the partial derivative (𝜕μ𝜕𝑝)𝑓. The answer must be in terms of the thermodynamic properties 𝛼,𝑐𝑃𝑎𝑛𝑑𝑘𝑇.2) A particular system, containing 1 mol, is taken from state A to state B through a process that obeys 𝑃𝑣1/2=𝑐𝑜𝑛𝑠𝑡.Knowing that during this process 𝛼=𝑎𝑃−1, 𝑘𝑇=𝑏and 𝑐𝑃=𝑐𝑣2are known and 𝑎,𝑏,𝑐are positive constants, determine the temperature variation of this system during this process in terms of the known values of states A and B.3) In the neighborhood of the triple point the vapor pressure of a liquid is given byln𝑃=𝐴−𝐵𝑇Where 𝐴and 𝐵are positive constants. This is the equation of the liquid-vapor transition curve in the T-P plane. Similarly, the vapor pressure of the solid of the same substance is given byln𝑃=𝐶−𝐷𝑇where C and D are also positive constants. Determine the temperature and the pressure at the triple point.Calculate the latent heat of sublimation and vaporization for this substance. Finally, determine, in the triple point, the corresponding latent heat of fusion.

Investigate the effect array tilt and tracking has on energy production from a solar array.  

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TECH/ENVS 305 – Green Technologies

Homework #1

Submit one Excel file for the following question. (Make sure each graph has the question part in the title)

Q1) Investigate the effect array tilt and tracking has on energy production from a solar array.

You must use PVWatts to complete answer this question. Available here http://pvwatts.nrel.gov

Steps for All Cases

  • Input zip code 60115 Click “Go”
  • Input 2.8 in DC System Size (roughly equal to the electric demand of the average U.S. home)
  • Leave Module Type as standard and System Losses at 14.08%
  • Leave Array Azimuth at 180 (standard practice for the northern hemisphere)
  • Change Array Type and Tilt according to question part
  • Click the orange arrow to go to PVWatts results
  1. (*) Plot in Excel, the monthly AC energy produced from a 2.8 kW array with a fixed (roof mount) array type with a tilt equal to the latitude of the location (41.9o) (Yearly Optimized).
  2. Plot in Excel, the (Summer Optimized)monthly energy produced from a 2.8 kW array with a fixed tilt  = (0.93 * (local latitude)) – 21
  3. Plot in Excel, the (Winter Optimized) monthly energy produced from a 2.8 kW array with a fixed tilt = (0.875 * (local latitude)) + 19.2
  4. Plot in Excel, the monthly energy produced from a 2.8 kW array with a summer optimized tilt for March thru September and a winter optimized October thru February (Seasonal Optimized).
  5. Plot in Excel, the monthly energy produced from a 2.8 kW array with a 1 axis track and a fixed tilt equal to the latitude of the location.
  6. Plot in Excel, the monthly energy produced from a 2.8 kW array with a 2 axis track and a fixed tilt equal to the latitude of the location.
  7. Calculate the annual total kWh difference between in a & b and a & c.
  1. Fill in the provided table with the differences between annual energy production for the four types of systems (e.g. 1 Axis Annual AC production – Yearly Optimized Annual AC production)

 

 

 

 

 

Explain how the structure of materials like Elasticity, Plasticity, Flaws, Dislocation and fracture “facilitates the application of engineering design to produce solutions that meet specified needs

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How the structure of materials like Elasticity, Plasticity, Flaws, Dislocation and fracture “facilitates the application of engineering design to
produce solutions that meet specified needs with consideration of public health, safety, and welfare, as
well as global, cultural, social, environmental, and economic factors.”