Answer with Explanation:
The capillary rise in 2 parallel plates immersed in a liquid is given by the formula
![h=\frac{2\sigma cos(\alpha )}{\rho gd}](https://tex.z-dn.net/?f=h%3D%5Cfrac%7B2%5Csigma%20cos%28%5Calpha%20%29%7D%7B%5Crho%20gd%7D)
where
is the surface tension of the liquid
is the contact angle of the liquid
is density of liquid
'g' is acceleratioj due to gravity
'd' is seperation between thje plates
Part a) When the liquid is water:
For water and glass we have
Applying the values we get
![h=\frac{2\times 7.28\times 10^{-2}cos(0)}{1000\times 9.81\times 2\times 10^{-3}}=7.39mm](https://tex.z-dn.net/?f=h%3D%5Cfrac%7B2%5Ctimes%207.28%5Ctimes%2010%5E%7B-2%7Dcos%280%29%7D%7B1000%5Ctimes%209.81%5Ctimes%202%5Ctimes%2010%5E%7B-3%7D%7D%3D7.39mm)
Part b) When the liquid is mercury:
For mercury and glass we have
Applying the values we get
![h=\frac{2\times 485.5\times 10^{-3}cos(138)}{13.6\times 1000\times 9.81\times 2\times 10^{-3}}=-2.704mm](https://tex.z-dn.net/?f=h%3D%5Cfrac%7B2%5Ctimes%20485.5%5Ctimes%2010%5E%7B-3%7Dcos%28138%29%7D%7B13.6%5Ctimes%201000%5Ctimes%209.81%5Ctimes%202%5Ctimes%2010%5E%7B-3%7D%7D%3D-2.704mm)
The negative sign indicates that there is depression in mercury in the tube.
Answer:
1. 0.50
2. 0.75
3. 0.65
Explanation:
1. For the bid being successful with a 50-50 chance, we have the probability:
50/(50 + 50) = 50 / 100 = 0.50
2. Given the request for additional info:
Probability = probability of request and successful / probability of successful
= 75 / 100 = 0.75
3. We will evaluate the probability of being successful given its request
We will use the Bayesian theorem
= [P(request | successful) * P(successful)] / [P(request | successful) * P(successful) + P(request | unsuccessful) * P(unsuccessful)]
= ( 0.75 * 0.5) / (0.75 * 0.5 + 0.4 * 0.5)
= 0.65
Scoot, Gordon, John, Gus, Wally, Alan, and Deke
Answer: Increase in the population of lower organisms.
Explanation: Raccoons are mesopredators found in the middle levels of food webs and have critical impacts on the dynamics of many other species. Thus, they greatly contribute to the functioning of the ecosystem.
They are naturally equipped to checkmate the population size of other organism that are below them (i.e., their preys) in the food web. They are; predators, pathogen carriers (such as rabies), and competitors, as they compete with some specialist in the food web.
Hence, the decrease in the population of raccoons will lead to the increase in the population size of lower organisms they prey on in the food web or chain.
Explanation:
Since there are no answer choices, how do we answer this? comment the answer choices below and ill edit this