Under the assumption that current and voltage are both sinusoidal functions of time (t, in seconds) and both have the same frequency of 60 cycles per second (period=1/60), let C be the current in Amperes (Amps) with a maximum current of 5 Amps at zero seconds (t=zero). Let V be the voltage that is “leading” the current (‘leading’ corresponding to a negative phase shift) by .003 seconds, meaning voltage reaches its maximum of 180 volts .003 sec before the current reaches its maximum. Both functions begin at zero- there are no phase shifts. Question 1, Part A. Current as a function of time: Based upon the given information, we will be determining the Amplitude (A), period (and thus, B), and the phase shift (C).
Chow breaks the following 3 rules: never use a long word when a short one will do, never use a simile, metaphor, or other figure of speech which you are seeing in print, and never use a foreign phrase, a scientific or jargon word if you can think of an everyday English equivalent. The rule never use a long world when a short one will do is saying that long words don’t make you sound smarter unless they are used in the correct context, sometimes they have the opposite effect. They are also less likely to be understood and more awkward to read. Chow breaks this rule when she says “It would look innocuous enough...” (40), when she could have made it easier for the reader to understand by just replacing the word innocuous with the word bland. This rule is also broken when she uses the word gangrenous to describe flesh, instead of using a word that could create more imagery for the reader such as rotten or decomposed flesh, which is also easier to understand.
Homework Unit 57 Section 7 1. What friction rate should be used to size a duct for a static pressure drop of 0.1 in wc if the duct has a total equivalent length of 150 ft? (57.10) 2. What size metal duct should be used to deliver 170 CFM with a pressure drop of 0.15 in wc if the total equivalent length of 130 ft? (57.10) 7 in.
d. Their values get larger as the temperature is increased. e. An order equal to zero means there is no concentration dependence with rate. 2. The gas phase reaction A + B C has a reaction rate which is experimentally observed to follow the relationship rate = k[A]2[B]. The overall order of the reaction a. is first.
SEC failed at this due to the fact that their product will not operate above 130 degrees F, and that the requirements would not be able to be met without different materials (The Orion Shield Project, 2003). Due to this issue alone, it caused problems with the project, delaying the timeline for completion, increased the amount of resources used and not committing to the stakeholders. Not only did they fail to meet the temperature standard, they also failed to meet the life span expectation. Mr. Allison is responsible for overcoming these technical objectives as project manager of The Orion Shield Project. Ethical Issue: Before even beginning the project, Mr. Allison couldn’t keep his commitment in regards to meeting the temperature requirement.
This extreme pressure change makes the iso bars compact together creating fast moving winds and causing wind speeds to increase to even out the air pressure. 3. Describe the changes in central pressure and sustained wind speed between 29 and 30 August 2005? The air pressure from august 29th to august 30th changed from 904mbars to 985 mbars. While the air pressure increased the winds decrease as iso bars spread apart and wind is no longer moving at an abrupt pace.
Susan underwent disuse atrophy because it was immobilized so it did not perform the same amount of work as usual. In order to stop this from happening you would have to stimulate the muscles. Small contractions would have been weak enough to not disrupt the alignment of the third metatarsal. Performing isometric muscle contractions while her foot in the cast could possibly prevent the loss of muscle mass. 8.
The confidence intervals do overlap in this experiment; therefore the smaller light intensities does not have a signficant effect on the movment of Acheta domesticus as measured in 30 seconds. Thus, we fail to reject Ho, indicating that there is insufficent evidence to say that light intensity does affect the rate of movment as measured in 30 seconds of the Acheta domesticus. The age, size, and number of limbs of the crickets may have affected our resluts as this could have slowed or speed up their rate of
For example, if a particular isotope has a half-life of 20 yr, and the starting amount of the isotope is 100 mg, how much of the isotope will be left in exactly 100 yr? To solve this problem, we first make a chart containing the information we know. time |0 yrs | | | | | | | |amount |100 mg | | | | | | | | Since the half-life is 20 yr, each time interval in the chart should add 20 yr to the previous interval until the time of 100 yr is reached. time |0 yr |20 yr |40 yr |60 yr |80 yr |100 yr | |amount |100 mg | | | | | | | Since the time represented by each interval is the half-life of the isotope, the amount of the isotope must decrease by 1/2 for each interval. For instance, at the end of the first 20 yr interval, the amount of the isotope would decrease by 1/2 to 50 mg.