A solar cell fabricated with a p-n junction has an open circuit voltage of 0.6V and a short circuit current of 20mA/cm²when exposed to a solar insolation of 1000 W/m², and has a form factor FF=0.7

1. Draw the current-voltage characteristic of this device, making sure to identify the Voc and Isc, and the point where the maximum power is generated.
2. What is the efficiency of this cell?
3. Suppose you can improve the manufacturing process of the cell so that the carrier life time is increased by 4 times. What will happen to the V_oc and I_sc of the cell? Draw how the current voltage characteristic will change.
4. If the solar insolation of 1000 W/m² is constant for 8 hours per day and then is zero for 16 hours per day what is the capacity factor of this cell? How much electrical energy will it produce in a day?

A 100-mL water sample is collected from the activated sludge process of municipal wastewater treatment. The sample is placed in a drying dish (weight = 0.5000 g before the sample is added), and then placed in an oven at 104°C until all the moisture is evaporated. The weight of the dried dish is recorded as 0.5625 g. A similar 100-mL sample is filtered and the 100-mL liquid sample that passes through the filter is collected and placed in another drying dish (weight of dish before sample is added is also 0.5000 g). This sample is dried at 104°C and the dried dish’s weight is recorded as 0.5325 g. Determine the concentration (in mg/L) of:

(a) total solids,

(b) total dissolved solids,

(c) total suspended solids, and

(d) volatile suspended solids, (Assume that VSS = 0.7 x TSS.)

14.7 Batch and continuous biomass production Pseudomonas methylotrophus is used to produce single cell protein from methanol in a 1000-m3 pressure-cycle airlift fermenter. The biomass yield from substrate is 0.41 g/g, KS is 0.7 mg/l, and the maximum specific growth rate is 0.44 1/h. The medium contains 4% (w/v) methanol. A substrate conversion of 98% is desirable. The reactor may be operated in either batch or continuous mode. If operated in batch, an inoculum of 0.01% (w/v) is used and the downtime between batches is 20 h. If continuous operations are used at steady state, a downtime of 25 days is expected per year. Neglecting maintenance requirements, compare the annual biomass production achieved using batch and continuous reactors.

Required

You are asked to provide the shareholders with an assessment of the firm's asset management ,profitability,efficiency,solvency and leverage .Be as complete as possible given the above information ,but do not use any irrelevant information

3 boxes, having masses m1=5kg, m2=10kg and m3=15 kg are stacked "sideways" (i.e., in x-) on a surface with coefficient of kinetic friction 0.7 mu_k; an external force of magnitude 15 N pushes on the right-most box, making an angle of 30 degrees relative to the horizontal; a second force of magnitude 20 N pushes in the opposite direction on the left-most box, as a result of which all three accelerate uniformly. Determine the numerical value all of the forces acting on each of the boxes (including all normal forces between the boxes), as well as the amount the boxes have moved after a time of 7 seconds. Keep in mind that the normal force acting specifically on the box subject to the external force is changed by the external force...

please make a diagram

A semiprofessional baseball team near your town plays two home games each month at the local baseball park. The team splits the concessions 50/50 with the city but keeps all the revenue from ticket sales. The city charges the team $500 each month for the three-month season. The team pays the players and manager a total of $2500 each month. The team charges $10 for each ticket, and the average customer spends $8 at the concession stand. Attendance averages 100 people at each home game.

Part 1   (4 points)

The team earns an average of   $   in revenue for each game and   $   of revenue each season.

With total costs of   $   each season, the team finishes the season with   $   of profit.

Part 2   (1 point)

In order to break even, the team needs to sell      tickets for each game. Round to the nearest whole number.

A survey found that womens heights are normally distributed with mean 62.1 in and standard deviation 2.1 in the survey also found that mens heights are normally distributed with a mean 69.7 and SD 3.8 a) most of the live characters at an amusement park have height requirements with a minimum of 4ft 9in and a maximum of 6ft 4in find the percentage of women meeting the height requirement the percentage of woment who meet the height requirement? (round to two decimal places as needed) b) find the percentage of men meeting the height requirement the percentage of men meeting the height requirement (round to two decimal places as needed ) c) If the height requirements are changed to exclude only the tallest 5% of men and the shortest 5% of women what are the new height requirements the new height requirements are at least ___ in. and at most ___ in. (round to one decimal place as needed)

• Think about some of your friends and what you have discovered by visiting their homes. Do they buy different things than you do? If so, why? How might a company distinguish you from them in terms of its targeting?
• Is it always harder to find new customers than it is to retain old ones or does it depend on the business you're in?
• Does one-to-one marketing have to be expensive? How can small organizations interact with their customers in a cost-effective way?
• Are large companies better off using multi segment strategies and small companies better off using niche strategies? Why or why not?
• How have companies such as JCPenney and Sears tried to change their position (reposition their stores)?
• Do you think hotel companies have segmented the market too much and confused customers?