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Recently Posted Questions

Posted in Biology

Which produces the sediments that ultimately lead to soil formation? A. rivers B. plants C. weathering D. rainfall

I think the correct answer from the choices listed above is option C. It is weathering that  produces the sediments that ultimately lead to soil formation. Weathering is the breaking down of rocks, soil, and minerals as well as wood and artificial materials through contact with the Earth's atmosphere, waters, and biological organisms.

Posted in English

Which statement about Victorian culture is reflected in this excerpt from "Ulysses" by Alfred, Lord Tennyson? Tho' much is taken, much abides; and though We are not now that strength which in old days Moved earth and heaven, that which we are, we are-- One equal temper of heroic hearts, Made weak by time and fate, but strong in will To strive, to seek, to find, and not to yield. The Victorians believed in the value of hard work. The Victorians were very heroic by nature. The Victorians believed that fate controlled their destiny. The Victorians had the time

The answer is A. The Victorians believed in the value of hard work the search for knowledge and new experiences were common topics of the Victorian Era and they believe in the value of hard work to achieve their goals. This is seen in the excerpt from "Ulysses" because of the way the poem talks about being strong and overcoming obstacles and hardships. 
"Made weak by time and fate, but strong in will 
To strive, to seek, to find, and not to yield."

Posted in Mathematics

The price of a cup of coffee was $2.65 yesterday. today, the price fell to $2.50 . find the percentage decrease. round your answer to the nearest tenth of a percent.

We must find the difference between prices. $2.65 - $2.50 = $0.15. Now we need to calculate what percent $0.15 is of $2.65. It is 5.7%! The price decreased, so it is a 5.7% decrease!

Posted in Health

Imagine you somehow developed a chronic disease. How would you gather information that would help you cure your illness? How could you tell if the information you had gathered was accurate and credible?

First, I'll find forums with other people who have this condition is a must. If you find out information on a forum, try to ask the members where they got it, if they have any evidence/studies to back it up. Depending on how well studied the disease is, doctors may or may not be helpful.

Then, 
I would check with the societies/organizations that were dedicated to this particular disease, but I would double check who started the organization, too. I know of one where the website support site for a disease was started by the pharmaceutical company that made drugs for it, so all the advice was to take their drugs.

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Posted in Chemistry

Monel metal is a corrosion-resistant copper-nickel alloy used in the electronics industry. A particular alloy with a density of 8.80 g/cm3 and containing 0.073% Si by mass is used to make a rectangular plate that is 15.0 cm long, 12.5 cm wide, and 2.50mm thick and has a 2.50-cm-diameter hole drilled through its center such that the height of the hole is 2.50mm . The silicon in the plate is a mixture of naturally occurring isotopes. One of the those isotopes is silicon-30, which has an atomic mass of 29.97376 amu and a percent natural abundance of 3.10% How many silicon-30 atoms are found in this plate? Express your answer numerically using two significant figures.

Answer is: there are 1.82·10²⁰ silicon-30 atoms.

V₁(alloy) = 15 cm · 12.5 cm · 0.25 cm.

V₁(alloy) = 46.875 cm³; volume of the alloy without hole.

V(hole) = 0.25 cm · (1.25 cm)² · 3.14.

V(hole) = 1.23 cm³

V₂(alloy) = 46.875 cm³ - 1.23 cm³.

V₂(alloy) = 45.65 cm³; volume of the alloy with hole.

m(alloy) = V₂(alloy) · d(alloy).

m(alloy) = 45.65 cm³ · 8.80 g/cm³.

m(alloy) = 401.7 g; mass of the alloy.

ω(Si) = 0.073% ÷ 100%.

ω(Si) = 0.00073.

m(Si) = ω(Si) · m(alloy).

m(Si) = 0.00073 · 401.7 g.

m(Si) = 0.293 g; mass of silicon it the alloy.

m(Si-30) = m(Si) · ω(Si-30).

m(Si-30) = 0.293 g · 0.031.

m(Si-30) = 0.0091 g; mass of the silicon-30.

n(Si-30) = m(Si-30) ÷ M(Si-30).

n(Si-30) = 0.0091 g ÷ 29.97376 g/mol.

n(Si-30) = 0.000303 mol; amount of the silicon-30.

N(Si-30) = n(Si-30) · Na (Avogadro constant).

N(Si-30) = 0.000303 mol · 6.022·10²³ 1/mol.

N(Si-30) = 1.824·10²⁰.

Posted in English

Which character is described in these lines? Lord of the Scyldings, this single petition? Not to refuse me, defender of warriors, Friend-lord of folks, so far have I sought thee, That I may unaided, my earlmen assisting me, This brave-mooded war-band, purify Heorot. A. Higelac B. Beowulf C. Grendel D. Hrothgar

The best and most correct answer among the choices provided by the question is the second choice or letter B.

Based on the lines given, the character that was described is Beowulf.


I hope my answer has come to your help. God bless and have a nice day ahead!

Posted in English

In the following passage from Great Astronomers by Robert Stewall Ball, the author states that he will trace the developments in astronomy from the time of Ptolemy to the nineteenth century. Based on the content and style of the excerpt, what kind of audience did Ball primarily have in mind when he was writing this book? The history of astronomy thus becomes inseparable from the history of the great men to whose labours its development is due. In the ensuing chapters we have endeavoured to sketch the lives and the work of the great philosophers, by whose labours the science of astronomy has been created. We shall commence with Ptolemy, who, after the foundations of the science had been laid by Hipparchus, gave to astronomy the form in which it was taught throughout the Middle Ages. We shall next see the mighty revolution in our conceptions of the universe which are associated with the name of Copernicus. We then pass to those periods illumined by the genius of Galileo and Newton, and afterwards we shall trace the careers of other more recent discoverers, by whose industry and genius the boundaries of human knowledge have been so greatly extended. Our history will be brought down late enough to include some of the illustrious astronomers who laboured in the generation which has just passed away. A. students specializing in the study of astronomy B. people with a casual interest in astronomy C. scientists and mathematicians working with astronomers D. geologists and cartographers

The best and most correct answer among the choices provided by the question is the third choice or letter C.

Scientists and mathematicians working with astronomers are kind of audience did Ball primarily have in mind when he was writing the book.


I hope my answer has come to your help. God bless and have a nice day ahead!

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Posted in Mathematics

What interval includes all possible values of x, where –3(6 – 2x) ≥ 4x + 12? (–∞, –3] [–3, ∞) (–∞, 15] [15, ∞)

The solution to the problem is as follows:

solve for x :

−3(6−2x)≥4x+12

−18+6x≥4x+12

2x≥30

x≥15

So the answer is D ) 15 to +infinity


I hope my answer has come to your help. God bless and have a nice day ahead!

Posted in Biology

Which of the following statements about tolerance range is true? a. Tolerance range is different for different organisms. b. The tolerance range is the total number of organisms that can be supported by an ecosystem. c. Tolerance range is affected by biotic factors in an ecosystem. d. The available water supply does not impact an organism’s tolerance range.

I think the correct answer from the choices listed above is option A. Tolerance range is different for different organisms. Animals can tolerate (or survive within) a certain range of a particular factor, but cannot survive if there is too much or too little of the factor.  But this range depends on the organism. Hope this answers the question.

Posted in Biology

Which of the following is not a use for a weather radar? a. forecasting weather b. locating precipitation c. determining type of precipitation d. measuring temperature

Answer: Measuring temperature

Explanation:

Weather radar is a weather surveillance device which is used to locate and detect the precipitation, calculate the motion of weather and estimate the weather condition. It is also not used to measure the weather conditions of a region.

It can measure the intensities of rain, snow and hail and other phenomena. It does not measure the temperature of the region.

Posted in Physics

The colors of the visual spectrum

 violetbluegreenyelloworange red

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Posted in History

How did a high enslaved population in the southern states threaten the people of the northern states?

For the answer to the question above, this refers to Three-Fifth Compromise where the South used the number of slaves in its territories to increase its representation.  It gave the South more power by using the slave population to its advantage.  This would threaten the balance of power, particularly to the Northern States.

Posted in Mathematics

Which CANNOT be used in a proof? A. Theorems B.Postulates C.Properties D.Undefined Terms

The best and most correct answer among the choices provided by the first question is the fourth choice or letter D.

Undefined terms cannot be used as a proof in mathematics.


I hope my answer has come to your help. God bless and have a nice day ahead!

Posted in Health

Flexibility exercises do all of the following except: A.) improve movement of the joints B.) decrease muscle soreness C.) strengthens the heart D.) helps prevent injury

I believe the correct answer from the choices listed above is option C. Flexibility exercises do all of the following except that it strengthens the heart. It has nothing to do with the cardiovascular health. Hope this answers the question. Have a nice day.

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Posted in Computers and technology

The ____ function displays the highest value in a range.

Max()
This function will display the highest value in a range

Posted in Biology

The higher invertebrates are divided into two evolutionary lines, protostomes and deuterostomes. This division is based on which developmental feature? A.wether the blastopore ultimately develops into a mouth or an anus B. wether the embryonic cells undergo spiral or radial cleavage C. wether the coelom forms by splitting the mesoderm or through the pocket of the gut.

Answer:

A. whether the blastopore ultimately develops into a mouth or an anus

Explanation:

The higher invertebrates are divided into two evolutionary lines named protostomes and deuterostomes based on whether the blastopore ultimately develops into a mouth or an anus. Blastopore is the first developement opening of archenteron (rudimentary alimentary canal) which appears during gastrula stage. If during embryonic development, the blastopore develops into mouth then the animal is known as protostome whereas development of anus from blastopore will make the invertebrate a deuterostome.

Invertebrates like annelids, arthropods and molluscs are examples of protostomes while echinoderms are examples of deuterostomes.

Posted in English

Read this excerpt from a research paper that argues that Charlotte Brontë was a pioneer of feminist literature. Which sentence is an example of evidence from a primary source? a.She was one of the few women in the Victorian era who pushed the boundaries and laid the groundwork for future feminists. b.Through her character Jane Eyre, Charlotte Brontë created an ideal female protagonist who refuses to submit to the rules set by the patriarchal society. c. For example, in the novel her character says, "Women are supposed to be very calm generally: but women feel just as men feel; they need exercise for their faculties, and a field for their efforts, as much as their brothers do; they suffer from too rigid a restraint, too absolute a stagnation, precisely as men would suffer." d. Many literary critics believe that the character of Bertha Mason reflects the atrocities and pressures on women in the Victorian era. e. This point is explained in the book The Madwoman in the Attic: The Woman Writer and the Nineteenth-Century Literary Imagination by Sandra Gilbert and Susan Gubar.

Answer:

C. For example, in the novel her character says, "Women are supposed to be very calm generally: but women feel just as men feel; they need exercise for their faculties, and a field for their efforts, as much as their brothers do; they suffer from too rigid a restraint, too absolute a stagnation, precisely as men would suffer." Whenever quotation is given, that shows that is directly quoted from the author herself

Explanation:

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