An air heater for an industrial application consists of an insulated, concentric tube annulus, for which air flows through a thin-walled inner tube. saturated steam flows through the outer annulus, and condensation of the steam maintains a uniform temperature on the tube surface. consider conditions for which air enters a 50-mm diameter tube at a pressure of 5 atm, a temperature of 17°c, and a flow rate of 0.06 kg/s , while saturated steam at 2.455 bars condenses on the outer surface of the tube. if the length of the annulus is 8 m, what are the air mean outlet temperature and air pressure drop from inlet to outlet? what is the mass rate at which condensate leaves the annulus? evaluate the properties of air at 325 k.

At a student café, there are equal numbers of two types of customers with the following values. the café owner cannot distinguish between the two types of students because many students without early classes arrive early anyway (i. e., she cannot price-discriminate). students with early classes students without early classes coffee 70 60 banana 51 101 the marginal cost of coffee is 10 and the marginal cost of a banana is 40. the café owner is considering three pricing strategies: 1. mixed bundling: price bundle of coffee and a banana for 161, or just a coffee for 70. 2. price separately: offer coffee at 60, price a banana at 101. 3. bundle only: coffee and a banana for 121. do not offer goods separately. assume that if the price of an item or bundle is no more than exactly equal to a student's willingness to pay, then the student will purchase the item or bundle. for simplicity, assume there is just one student with an early class, and one student without an early class. price strategy revenue from pricing strategy cost from pricing strategy profit from pricing strategy 1. mixed bundling $ $ $ 2. price separately $ $ $ 3. bundle only $ $ $ pricing strategy yields the highest profit for the café owner.

Abc factory produces 24,000 units. the cost sheet gives the following information: direct materials rs. 1,20,000direct labour rs. 84,000variable overheads rs. 48,000semi variable overheads rs. 28,000fixed overheads rs. 80,000total cost rs. 3,60,000presently the product is sold at rs. 20 per unit. the management proposes to increase the production by 3,000 units for sales in the foreign market . it is estimated that semi variable overheads will increase by rs. 1,000. but the product will be sold at rs. 14 per unit in the foreign market. however, no additional capital expenditure will be incurredq-1. what is present profit of the company ? q-2. what is proposed profit of the company in new market? q-3.what is suggestion for new makret proposal whether proposal accept or not

1. how much money did selfridge spend on advertising before the store’s opening? 2. explain what shopping was like in london during the early 1900s. how does this differ from the modern shopping experience? 3. what was the role of a floorwalker in 1900s london? 4. what inspired selfridge to ensure that customers in his store could browse at their leisure? do you need the links to the video?