What is a NOSQL database? For what types of applications would be a NOSQL database preferred over a relational database. Provide the name of a NOSQL database used in the real world.
In: Computer Science
1. What are the names of the parts of a UNIX command? list them, and give a brief description of each.
2. Can multiple UNIX commands be typed on the same single command line? Explain how
3. How can you find out which utilities are available on your system for editing files? Which utilities are available for editing on your system?
4. What does the following command do? What is $PATH and echo $PATH?
5. What is the result of giving the which utility the name of a command that resides in a directory that is nor in your search path?
In: Computer Science
Section 1
How far from a -7.40 μC point charge must a 2.00 μC point charge be placed in order for the electric potential energy of the pair of charges to be -0.500 J ? (Take the energy to be zero when the charges are infinitely far apart.)
d = ____ m (The Answer Is Not 0.52 m)
Section 2
A point charge has a charge of 2.50×10−11 C .
Part A
At what distance from the point charge is the electric potential 84.0 V ? Take the potential to be zero at an infinite distance from the charge.
d = ___ m
Part B
At what distance from the point charge is the electric potential 25.0 V ? Take the potential to be zero at an infinite distance from the charge.
d = ___ m
In: Physics
Write balanced molecular and net ionic equations for the reaction that occurs when
each of the following is added to a perchloric acid solution.
a) a barium hydroxide solution
b) solid barium sulfate
c) aluminum metal
In: Chemistry
A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 7.60 m/s at an angle of 15.0
In: Physics
|
Current Year |
Previous Year |
Growth Rate |
|
|
Real GDP |
$8.4 trillion |
$8.0 trillion |
|
|
Population |
202 million |
200 million |
|
|
GDP per Capita |
1A. Calculate GDP per Capita for the current year and previous
year.
1B. What is the annual growth rate of GDP per Capita? How do you
find it?
1C. How do real GDP growth and population growth affect GDP per
capita growth?
1D. Using your calculated figure in (1B), calculate the amount of
GDP per capita (future value) after 18 years.
1E. Using the rule of 72, calculate how many years GDP per capita
will be double.
72/growth rate = number of years to double the actual
value
In: Economics
Describe the hubs and spokes model of semantic memory. Why are lesions in the premotor/motor cortices more likely to produce categorical deficits for tools than animals? Why do lesions in the anterior temporal lobe produce deficits for a wider range of concepts?
In: Anatomy and Physiology
Describe rotameter-type flowmeters, explain how they work, and compare them with
Venturi flowmeters
In: Physics
Bruins Inc. has the following items in their current
balance sheet:
Common Stock 10,000,000 shares authorized, $1,000,000 issued -
$3,000,000
Capital Surplus - $9,000,000
Treasury Stock on Common 100,000 shares -
$6,000,000
Cumulative Preferred Stock 500,000 authorized
[2%] $100 par - $8,000,000
Treasury Stock on Preferred Stock 10000 shares - $6,000,000
Retained Earnings - $60,000,000
In: Accounting
A 54.1 mg sample of sodium perchlorate contains radioactive chlorine-36 (whose atomic mass is 36.0 amu).
1. If 29.6% of the chlorine atoms in the sample are chlorine-36 and the remainder is naturally occurring nonradioactive chlorine atoms, how many disintegrations per second are produced by this sample?
The half-life of chlorine-36 is 3.0×105 yr.
In: Chemistry
Oranges are very susceptible to cold weather, and long exposure to subfreezing temperatures can destroy them. Consider an 8 cm diameter orange (assume it is an idealised sphere) that is initially at 15oC. A cold front moves in one night, and the ambient temperature suddenly drops to -8.5oC, with a heat transfer coefficient of 7 W m-2 K−1 . Using the properties of water for the orange and assuming the ambient conditions to remain constant for 2.5 hours before the cold front moves out, determine temperatures at: ro = 0.0 cm (i.e., centre of the orange); ro = 1.0 cm; ro = 2.0 cm; ro = 3.0 cm; ro = 4.0 cm
In: Other
Assume that a disk has an average seek time of 9 msec and a rotation speed of 7000 RPM. Assume also that there are 40 sectors in a track. What is the average time expected to retrieve a single sector?
In: Computer Science
At a fixed temperature, equal moles of N2 (g) and F2 (g) are mixed in a constant pressure container (the volume of the container changes in order to keep the pressure at a constant value). The N2 (g) and F2 (g) are allowed to react, producing NF3 (g):
N2 (g) + 3F2 (g) ? 2 NF3 (g)
If the initial volume of the container, before any reaction takes place, is 4.10 L, determine the volume of the container after the N2 (g) and F2 (g) have reacted to completion.
The final volume will be L
In: Chemistry
Jeremy and Alyssa Johnson have been married for five years and do not have any children. Jeremy was married previously and has one child from the prior marriage. He is self-employed and operates his own computer repair store. For the first two months of the year, Alyssa worked for Office Depot as an employee. In March, Alyssa accepted a new job with Super Toys Inc. (ST), where she worked for the remainder of the year. This year, the Johnsons received $273,000 of gross income.
Determine the Johnson's AGI given the above information:
In: Accounting
Jackson County Senior Services is a nonprofit organization devoted to providing essential services to seniors who live in their own homes within the Jackson County area. Three services are provided for seniors—home nursing, Meals On Wheels, and housekeeping. Data on revenue and expenses for the past year follow:
| Total | Home Nursing | Meals On Wheels | House- keeping |
|||||
| Revenues | $ | 917,000 | $ | 263,000 | $ | 401,000 | $ | 253,000 |
| Variable expenses | 471,000 | 113,000 | 204,000 | 154,000 | ||||
| Contribution margin | 446,000 | 150,000 | 197,000 | 99,000 | ||||
| Fixed expenses: | ||||||||
| Depreciation | 70,700 | 8,900 | 40,900 | 20,900 | ||||
| Liability insurance | 43,800 | 20,500 | 8,000 | 15,300 | ||||
| Program administrators’ salaries | 115,300 | 40,300 | 38,800 | 36,200 | ||||
| General administrative overhead* | 183,400 | 52,600 | 80,200 | 50,600 | ||||
| Total fixed expenses | 413,200 | 122,300 | 167,900 | 123,000 | ||||
| Net operating income (loss) | $ | 32,800 | $ | 27,700 | $ | 29,100 | $ | (24,000) |
*Allocated on the basis of program revenues.
The head administrator of Jackson County Senior Services, Judith Miyama, considers last year’s net operating income of $32,800 to be unsatisfactory; therefore, she is considering the possibility of discontinuing the housekeeping program.
The depreciation in housekeeping is for a small van that is used to carry the housekeepers and their equipment from job to job. If the program were discontinued, the van would be donated to a charitable organization. None of the general administrative overhead would be avoided if the housekeeping program were dropped, but the liability insurance and the salary of the program administrator would be avoided.
Required:
1-a. What is the financial advantage (disadvantage) of discontinuing the Housekeeping program?
1-b. Should the Housekeeping program be discontinued?
2-a. Prepare a properly formatted segmented income statement.
2-b. Would a segmented income statement format be more useful to management in assessing the long-run financial viability of the various services?
In: Accounting