consult the plot of efficiency of solar cells prepared by the National Renewable Energy Laboratory (NREL). As of 2010, the ______________ cell has the highest efficiency and _____________ cells have the lowest efficiency. (Fill in the blanks.)
Select one:
a. single crystal Si; dye-sensitized
b. two-junction concentrator; inorganic;
c. three-junction concentrator; organic
d. single-junction concentrator; amorphous Si:H
In: Physics
PartI: Rank the following compounds in order of decreasing boiling point:
potassium fluoride (KF),
carbon tetrafluoride (CF4),
and formaldehyde (CH2O)
PartII: The melting point of a solid is related to the way in which that substance is held together. Arrange the solids in order of decreasing melting point.
Rank from highest to lowest melting point.
a) graphite
b) solid ammonia
c) sodium chloride
In: Chemistry
What are your thoughts on potential payment of collegiate athletes? If you are for paying athletes, what does the system look like? How do you keep the "haves" from completely dominating the "have-nots?" If you are against it, why? At it's highest level, "student-athletes" make millions of dollars for their institutions yet receive financial compensation that pales in comparison to the revenue they generate.
In: Economics
A mass suspended from a spring is raised a distance of 5 cm above its resting position. The mass is released at time t=0 and allowed to oscillate. After one third of a second, it is observed that the mass returns to its highest position, which was 4.5 cm above its resting position. What is the rate of change of the position of the mass at t = 2.1 seconds?
In: Physics
For the following redox reactions arrange them in
order of E cell. What is the order from highest to lowest?
a)Sn(s)| Sn2+ (aq, 0.022M)|| Ag+(aq, 2.7M)|Ag(s)
b)Mg(s)| Mg2+(aq,2.74M)||Cu2+(aq,0.0033M) Cu(s)
c)Fe(s)|Fe3+(aq,0.0011M)||Fe3+(aq,2.33M)|Fe(s)
In: Chemistry
1. Why should someone measure absorbance at 340nm? What are the advantages/disadvantages of using 355nm vs 340nm? NADH absorbance is highest at 250nm, what are 2 distinct reasons we are not looking at that wavelength?
2. One of the known inhibitors of hexokinase is 2-deoxy-D-glucose. Predict the type of inhibitor that 2-deoxy-D-glucose might be and explain your answer.
In: Chemistry
If you were attempting to maximize your net income, which inventory cost flow assumption would you choose? Why? What conditions must exist for this method to produce the highest net income? When perpetual inventory records are kept, the results under the FIFO and LIFO methods are the same as they would be in a periodic inventory system.” Do you agree? Explain.
In: Accounting
Foreign Exchange Rates Volatility
You are kindly requested to collect the foreign exchange rates for
the EUR, GBP, CAD, AUD, NZD and
JPY, on monthly average bases, for the time period: 1/1/2016 –
31/12/2019.
Question:
Analyze the volatility of the six currencies over the time horizon
identified and determine which
currency has witnessed the highest volatility.
In: Finance
List three types of products that have elastic pricing, and three types of products that have inelastic pricing. Choose one of the inelastic products and think of a specific product and brand in that category. what do you think is the highest price the marketers could charge for that product, before demand would be adversely affected? Explain your thinking.
Please answer in 350-400 words
In: Economics
Hi I have to answer following questions regarding my research paper. Note that this question is about Coca Cola company operations in United Arab Emirate.
1) Who carries the bottling function for coke in United Arab Emirates?
2) Which product of coca cola has the highest sales and the sales about their other products in United Arab Emirates?
In: Economics