Engineering, 17.12.2019 22:31 yoojayypee1236
Tommy's favorite baseball team, the trojans, just released a new collection of baseball cards. the only way to collect these baseball cards is by buying mike's magic cereal boxes. each cereal box comes with a single card inside, but what makes them magical is this: it is three times more likely for tommy to collect a card that he hasn't collected before than it is for him to get a card that he already has (unless of course he doesn't have any cards, in which case he'll always get a card that he doesn't have, or he's collected them all, in which case he shouldn't be buying this cereal anymore). there are n different playing cards in total, and tommy is determined to collect them all. (a) if tommy has already collected m > 0 baseball cards, what is the expected number of additional boxes of cereal that the tommy will need to buy in order to collect a new card? (b) what is the expected number of boxes of cereal that the tommy will have to buy in order to collect all n distinct cards?
Answers: 2
Engineering, 03.07.2019 14:10
If the thermal strain developed in polyimide film during deposition is given as 0.0044. assume room temperature is kept at 17.3 c, and thermal coefficient of expansion for the film and the substrate are 54 x 10^-6c^-1 and 3.3 x 10^-6c^-1respectively. calculate the deposition temperature.
Answers: 3
Engineering, 04.07.2019 18:10
Thermal stresses are developed in a metal when its a) initial temperature is changed b) final temperature is changed c) density is changed d) thermal deformation is prevented e) expansion is prevented f) contraction is prevented
Answers: 2
Engineering, 04.07.2019 18:10
Compute the pressure drop of 30°c air flowing with a mean velocity of 8 m/s in a circular sheet-metal duct 300 mm in diameter and 15 m long. use a friction factor, f 0.02, and pair = 1.1644 kg/m a. 37.26 pa b. 25.27 pa n c. 29.34 pa d. 30.52 pa
Answers: 1
Engineering, 04.07.2019 18:20
Air flows over a heated plate àt a velocity of 50m/s. the local skin factor coefficient at a point on a plate is 0.004. estimate the local heat transfer coefficient at this point.the following property data for air are given: density = 0.88kg/m3 , viscosity 2.286 x 10 ^-5 kgm/s , k = 0.035w/mk ,cp = 1.001kj/kgk. use colburn reynolds analogy.
Answers: 1
Tommy's favorite baseball team, the trojans, just released a new collection of baseball cards. the o...
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