Macro farms Ltd can purchase two types of fertilizer which contain the following percentage Nitrate Phosphate Potash Type X 18 5 2 Type Y 3 2 5 For certain type of crop, the following minimum quantities (kg) are required Nitrate Phosphate Potash 100 50 40 Type X cost GHS10 per kg and type Y cost GHS5 per kg. The company currently buys 1,000 kg of each type and wishes to minimize it expenditure on fertilizers. Required 1. What is the minimum expenditure that can be incurred on fertilizer? 2. Find the savings the company can make by switching from it current policy to your recommendation.

Macro farms Ltd can purchase two types of fertilizer which contain the following percentage Nitrate Phosphate Potash Type X 18 5 2 Type Y 3 2 5 For certain type of crop, the following minimum quantities (kg) are required Nitrate Phosphate Potash 100 50 40 Type X cost GHS10 per kg and type Y cost GHS5 per kg. The company currently buys 1,000 kg of each type and wishes to minimize it expenditure on fertilizers. Required 1. What is the minimum expenditure that can be incurred on fertilizer? 2. Find the savings the company can make by switching from it current policy to your recommendation.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter1: Basic Modes Of Heat Transfer

Section: Chapter Questions

Problem 1.2DP

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Using the information in Problem 1.22, estimate the ambient air temperature that could cause frostbite on a calm day on the ski slopes. 1.22 In order to prevent frostbite to skiers on chair lifts, the weather report at most ski areas gives both an air temperature and the wind-chill temperature. The air temperature is measured with a thermometer that is not affected by the wind. However, the rate of heat loss from the skier increases with wind velocity, and the wind-chill temperature is the temperature that would result in the same rate of heat loss in still air as occurs at the measured air temperature with the existing wind. Suppose that the inner temperature of a 3-mm-thick layer of skin with a thermal conductivity of 0.35W/mKis35C and the air temperature is 20C. Under calm ambient conditions the heat transfer coefficient at the outer skin surface is about 20W/m2K (see Table 1.4), but in a 40-mph wind it increases to 75W/m2K. If frostbite occurs when the skin temperature drops to about 10C, do you advise the skier to wear a face mask? What is the skin temperature drop due to the wind?
soil test recommendation for your vegetable garden calls for 2 lb. of N/1,000 sq ft, O lb. of P205/1,000 sq ft, and 1 lb. of K20/1,000 sq ft. The garden is 40 ft by 20 ft. How many fertilizer blends is needed to supply the recommended amount of Nitrogen?
The following table lists molecular weight data for a polypropylene material. Compute the number-average molecular weight, Molecular Weight Range (g/mol)//// xi////// wi 8,000–16,000//// 0.05/// 0.02 16,000–24,000 ///0.16// 0.10 24,000–32,000 ///0.24// 0.20 32,000–40,000 ///0.28// 0.30 40,000–48,000 ///0.20// 0.27 48,000–56,000 ///0.07// 0.11 Round your answer to 0 decimal places.
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Considering the transportation costs of natural gas over land by pipeline, natural gas specifications can be relaxed. Select one: O True O False
Refer to the Worksheet shown, set up to calculate the displacement of a spring. Hooke's law states that the force (F, in newtons) applied to a spring is equal to the stiffness of the spring (k, in newtons per meter) times the displacement {x, in meters): F= kx. ;Chapter 10, Problem 161CA, Refer to the Worksheet shown, set up to calculate the displacement of a spring. Hooke's law states Cell A3 contains a data validation list of springs. The stiffness (cell 83) and maximum displacement (cell C3) values are found using a VLOOKUP function linked to the table shown at the right side of the worksheet. These data are then used to determine the displacement of the spring at various mass values. A warning is issued if the displacement determined is greater than the maximum displacement for the spring. Use this information to determine the answers to the following questions. Write the expression, in Excel notation, that you would type into cell 86 to determine the displacement of the spring.…
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In a linear spring finite element model, as per the finite element model’s sign convention, which one of the following statements is true? Select one: a. If Fe1 is negative then the spring is under compression b. If Fe2 is negative then the spring is under tension c. If Fe1 is positive then the spring is under tension d. If Fe2 is positive then the spring is under tension
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