An extremely thin sheet of glass is being inspected at the factory. Illuminated by white light at near-normal incidence, the film-like sheet is 0.402 µm thick and has air on both sides. If the glass has a refractive index of 1.52, what wavelength of visible light (in nm) does it reflect most strongly? (The wavelengths of visible light range from 400 to 700 nm.)
In: Physics
Answer all of these following questions below with a total response that should be 300-500 words.
The following questions should be answered about the : Amygdala
In: Anatomy and Physiology
Research and Development:
The Thomas Company is in the process of developing a revolutionary new product. A new division of the company was formed to develop, manufacture, and market this product. As of year‐end (December 31, 2017), the product has not been manufactured for resale; however, a prototype unit was built and is in operation.
Throughout 2017 the division incurred certain costs. These costs include design and engineering studies, prototype manufacturing costs, administrative expenses (including salaries of administrative personnel), and market research costs. In addition, $500,000 in equipment (estimated useful life: 10 years) was purchased for use in developing and manufacturing the preproduction prototype and will be used to manufacture the product. Approximately $200,000 of this equipment was built specifically for the design and development of the product; the remaining $300,000 of equipment will be used to manufacture the product once it is in commercial production.
Required:
In: Accounting
For each of the passages below, identify the title and author of the short story from which the passage comes, explain what the passage depicts or illustrates, provide the larger context in which the passage can be understood, and interpret the significance of the passage to the whole story.
"He should not have built the fire under the spruce tree. He should have built it in the open. But it had been easier to pull the twigs from the brush and drop them directly on the fire. Now the tree under which he had done this carried a weight of snow on its boughs. No wind had blown for weeks, and each bough was fully freighted. Each time he had pulled a twig he had communicated a slight agitation to the tree - an imperceptible agitation, so far as he was concerned, but an agitation sufficient to bring about the disaster. High up in the tree one bough capsized its load of snow. This fell on the boughs beneath, capsizing them. This process continued, spreading out and involving the whole tree. It grew like an avalanche, and it descended without warning upon the man and the fire, and the fire was blotted out!"
In: Psychology
question: Phone Number CheckingAlice has been having trouble with
people filling her website’s form incorrectly, especially with
phone numbers. She’d like tomake sure a user’s phone number input
only has digits (other than -) and is exactly 10 digits
long.Finishvalidphonenumber(string)such that the function returns
True if a phone number is valid, and False if not.
def valid_phone_number(number: str) -> bool:
"""
Return True if the number is a valid phone
number. A valid phone number:
1) Has exactly 10 digits (we are excluding the
country code)
2) Only has digits (no alphabets or special
characters)
3) May have "-" to split numbers. Example:
0123456789 and 012-345-6789 are
BOTH valid
Do *not* use loops for this problem. Try to make sure you only use built-ins
Hint: you will need 3 built-in string methods
>>>
valid_phone_number("0123456789")
True
>>>
valid_phone_number("012-345-6789")
True
>>>
valid_phone_number("01-23-45-67-89")
True
"""
# TODO: do some checking here
# change this
return True
#### Part 2: String Functions with loops ###
In: Computer Science
In: Computer Science
4. Using the popular Utility function U=E(r) - 0.5*A*Variance(r), what is the utility for an investor with risk-aversion index of 3, whose portfolio has an expected return of 7% and a standard deviation of 16%?
Report 2 decimals in your answer
6. South Park Company's stock has an expected Return of 6.56% while Quahog Company's stock has an expected return of 3.8%. What % of my wealth should I invest in Quahog Company's stock to have an expected return of 10.86%? Report you answer as a % with 2 decimals. If your answer is 3.56%, just enter/type "3.56"
In: Finance
A 25.25 kg child is riding a playground merry-go-round that is rotating at 35.5 rev/min.
(A) What net force is acting on her if she is standing on the merry-go-round 1.4 m from its center in newtons? The net force in this situation is sometimes called "centripetal force".
(B) What net force (in N) is acting on her if she is standing on an amusement park merry-go-round that rotates at 3.2 rpm and she is 7.6 m from its center?
(C) How many times her weight is the force in part (a)?
(D) How many times her weight is the force in part (b)?
In: Physics
In: Operations Management
While investigating a group of defective solar arrays, taken from the Mohammed Bin Rashid Al Maktoum Solar Park in Dubai, you notice three main classifications of defects. 27% of defects are related to a cell’s semiconductor material bandgap, 51% are related to impact damage, and 22% are age-related in nature. Over the study period, 3 instances of material bandgap defects and 5 occurrences of age-related defects are recorded. What is the most probable number of recorded defects related to impact damage?
Note: This problem is related to discrete probability distribution ( I think multinomial distribution should be used)
In: Statistics and Probability