Two parallel rectangles having emissivities of 0.6 and 0.9 are each 1.2 meters wide and 2.4
meters high. They are positioned 0.6 meters apart. The plate with ? = 0.6 is at 1000 K while the other is
420 K. The surroundings are at 290 K and may be assumed to absorb all energy that escapes the two plates.
(a) What is the total energy lost (Watts) from the hotter plate (radiosity)?
(b) What is the radiant energy exchange (Watts) between the two plates?

QUESTION 7

1. Which has the greatest NPV assuming a 25 year planning horizon and MARR = 12%?

   		Install a $20,000 solar system that will last 25 years, and generate 38,000 kWh/year at $0.10/kWh.
   		Install a $25,000 Ground-Source Heat pump that will last 50 years and save $3,500/year.
   		Both options has equal NPV
   		Not possible to be calculated

Liverpool Company has two divisions and manufactures one type of watch.. The two divisions are the production Division and the Package & Delivery Division. The production Division manufactures watches and then sells them to the Package & Delivery Division, which packs the watches and sells them to retailers. The market price for the Package & Delivery Division to purchase this watch is £40.

Notes: Fixed costs shown above are per pair for 100,000 units.

d) Calculate and compare the difference in overall corporate net income between Scenario A and Scenario B if the Production Division sells 100,000 watches to retailers for £120 per watch.

1. Scenario A: Negotiated transfer price of £30 per watch.

2. Scenario B: Market-based transfer price of £40 per watch.

Explain fully.

The following table sets the demand and the supply schedules for flower bouquet on a normal            

weekend.

                                                                                                       16 marks

1. What is the market equilibrium price and quantity? Why?
2. Describe the situation in the flower market if the price of a flower bouquet is $24. How will the price adjust?
3. Describe the situation in the flower market if the price of a flower bouquet is $7. How will the price adjust?

4. Flower sellers know that Valentine day is next week-end and they expect the price to be higher, so they withheld 30 flower bouquet from the market this week end. What is the equilibrium price this week end? Complete the table to show your result.

It is desired to air-condition a small one-room store located on the first floor of a building several stories in height. The store is 20' wide and 40' deep, and the ceiling height is 12'.The front wall, which faces north, may be condidered as 100% glass. The partitions between this store and the stores on either side are 4" cinder tile, platered on both sides; and the rear wall, which contains 40 sq ft of glass, is of 4" brickbacked by 8" concrete blocks with furred metal lath and plaster on the inside surface. The floor construction consists of a 6" concrete slab with 1/8" asphalt tile flooring laid directly on the conconcrete. There is no ceiling in the basement. The store ceiling constructin consists of a 3" concrete slab with a suspended metal-lath and plaster ceiling below the supporting steel joist, and a double wood floor on sleepers above the slab. The store is to be kept at 80F and 50% relative humidity when the outside temperature is 95F and the relative humidity is 50%. The stores on either side are not airconditioned, nor are the offices on the floor above. The temperature in the basement may be assumed to be 7 1/2 deg warmer than the store. Assume that there will be an average of 20 persons in the store and that about 2,000 watts of fluorescent lighting will be used.

What are the coefficients of heat transmission for walls, ceiling, floor, and partitions?

Calculate the sensible heat gain of the store described . Do not include infiltration.

For the same store, find the number of pounds of fresh air needed per minute if 75% of the air is recirculated and 25% is fresh air.

Compute the number of tons of refrigeration required to air-condition the store.

How can I edit this C code to make sure that the letter P and L would show up separately one at a time on an interval of one second on a raspberry pi?

1 #include <stdio.h>
2 #include <unistd.h>
3 #include "sense.h"
4
5 #define WHITE 0xFFFF
6
7 int main(void) {
8     // getFrameBuffer should only get called once/program
9     pi_framebuffer_t *fb=getFrameBuffer();
10     sense_fb_bitmap_t *bm=fb->bitmap;
11
12      bm->pixel[0][0]=WHITE;
13      bm->pixel[0][1]=WHITE;
14      bm->pixel[0][2]=WHITE;
15      bm->pixel[0][3]=WHITE;
16      bm->pixel[0][4]=WHITE;
17      bm->pixel[0][5]=WHITE;
18      bm->pixel[1][5]=WHITE;
19      bm->pixel[2][5]=WHITE;
20      bm->pixel[3][5]=WHITE;
21      bm->pixel[3][4]=WHITE;
22      bm->pixel[3][3]=WHITE;
23      bm->pixel[2][3]=WHITE;
24      bm->pixel[1][3]=WHITE;
25
26
27     sleep(1);
28
29
30 bm->pixel[0][0]=WHITE;
31 bm->pixel[0][1]=WHITE;
32 bm->pixel[0][2]=WHITE;
33 bm->pixel[0][3]=WHITE;
34 bm->pixel[0][4]=WHITE;
35 bm->pixel[0][5]=WHITE;
36 bm->pixel[1][0]=WHITE;
37 bm->pixel[2][0]=WHITE;
38 bm->pixel[3][0]=WHITE;
39
40
41     /*
42     void drawCFB(void);
43     drawCFB();
44     */
45
46     sleep(1);
47     freeFrameBuffer(fb);
48     return 0;
49 }
50

This exercise deals with the case where price is not a constant but related to quantity demanded. The demand (price) function is P = 50 − 2.5Q, where Q is the quantity demanded. The revenue function is

TR = QxP =50Q -2.5Q²

and the total cost function is

TC = 25+25Q.

Using Excel, develop a table showing columns for Q, P, TR, TC, and Profit (TR-TC). Graph the total cost and total revenue functions at the values of Q: 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9. Indicate approximately on the graph the break-even output levels where total cost equals total revenue. Distinguish between these two output levels.

int[]array={90, 57, 34, 81, 59, 51, 99, 52, 78, 67}; use for numbers 1 through 4

1. Write code to create two int arrays called odd and even of length 10. Populate the arrays with even numbers in the even array and odd numbers in the odd array as you go through the int[]array [ reminder 7%2 is 1, 8%2 is 0. The modulus operator yields the remainder]. Do not worry about the 0’s that are not filled.

2. Write code to go through the array and increase any number < 50 by 20.

3. Write code to find the average of the given array.

Write code to print the given array backwards

1. The table below shows the monthly sales of a motorcycle store during the last two years.

50. Compute an exponential smoothing and an adjusted exponential smoothing for the data using:

α = 0.2 and β = 0.6

50. Calculate MSE for Ft and Aft
50. Identify the best method to forecast the motorcycle sales using MSE.