Homework answers and tutorials

Waiting for answer What is another name for divergent boundaries?
Constructive boundaries. The way I remember it is this: Divergent means 'going away' so the plates go away (diverge) from another. This causes a gap between them where lava rises. W...
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Waiting for answer If an atom loses an electron, why doesn't its proton in the...
When an atom loses an electron, the positive charge on the resulting ion comes from the fact that there is now one more proton than electrons. There is no external positive charge for the proton in the nucleus to repel. The positive charge comes from the excess proton in the nucleus. Also, the stron...
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Waiting for answer What is the reciprocal of 2/3?
##3/2## The reciprocal means the multiplicative inverse of a number. The multiplicative inverse ##n'## of a number ##n## is a number that when multiplied to ##n##, results to the multiplicative identity which is 1. That is... ##n'*n = 1## ##2/3x = 1## ##2x = 3## ##x = 3/2##
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Waiting for answer How do you find the derivative of ##sin(x^3)##?
Using the notation provided there, if we define ##y(x) = sin(x^3)## and ##u=x^3##, we may rewrite ##y(x)## as ##y(u)=sin(u)## From the chain rule we know that ##dy/dx = (du)/dx (dy)/(du)##. Recall that ##u(x) = x^3## and ##y(u) = sin(u)##. Therefore, by the , ##(du)/dx = 3x^2##, and by the definitio...
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Waiting for answer 14% compounded continuously
##15%## compounded semiannually is ##15.5625%## annually and ##14%## compounded continuously is ##15.027%## annually APY refers to how much money you earn on a deposit over a year, t...
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Waiting for answer What was the significance of the Battle of Stalingrad?
It was seen as one of the major turning points in World War 2. The German attack on the Soviet Union in 1941 (Operation Barbarossa) after initial success, had slowed down by 1942. Th...
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Waiting for answer What does gravity mean?
Force of attraction between particles that have mass. The force of gravity 'felt' between two particles is directly proportional to the product of the masses of the two particles, an...
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Waiting for answer What is the difference between a population, community, and...
The difference would be the factors (biotic or abiotic) which are included in each level of organization. First, let's review biotic and abiotic factors. Biotic factors are living...
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Waiting for answer How do you find density in the ideal gas law?
The is determined by utilizing a variation of the where density and molar mass replace moles and volume. The original ideal gas law uses the formula PV = nRT, the density version of the ideal gas law is PM = dRT, where P is pressure measured in atmospheres (atm), T is temperature measured in kelv...
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Waiting for answer How do you convert 6.59 kL to L?
You use a simple conversion factor. Before doing any calculations, take a look at the units you are dealing with. In your case, you need to kiloliters, kL , to liters, L . If yo...
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Waiting for answer What are electrons?
negatively charged particle ,having negligible mass, Present in the atom, outside the nucleus. Electron is a sub atomic particle . it is negatively charged and having negligible mass...
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Waiting for answer What is the formal charge for the Phosphate Ion?
Phosphoric acid, ##H_3PO_4##, can form phosphate salts, i.e. salts of ##PO_4^(3)##. But in water, you would reach a stoichiometric endpoint at ##"biphosphate"##, i.e. ##HPO_4^(2)##...
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Waiting for answer What was the Fronde? What were its causes and effects?
A series of civil wars in France lead by the aristocrats to rebel against Mazarin during the early reign of Louis XIV. The French aristocrats, lead by Gaston of Orleans, wants to con...
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Waiting for answer What is ##(2 8) \times (  4 6)##?
60 ##(28)times (46)## ##(6)times (10)## ##60##
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Waiting for answer How do u find marginal revenue?
Marginal Revenue is the difference between present total revenue and the previous total revenue. It is an addition made to the total revenue. Marginal Revenue is the additional reve...
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Waiting for answer In how many ways can 4 people be seated in a row of 12 chair...
I broke the question down into 2 parts, then solved them and multiplied the answer to get 11,880 ways. We can solve this by breaking down the question into 2 smaller questions. The f...
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Waiting for answer How does weathering, erosion and deposition contribute to th...
these 3 are few of many processes which helps in rock formation to understand these processes and their contribution to rock cycle we have to study the whole cycle. I will explain in...
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Waiting for answer What substance is produced by the sudoriferous glands?
Sweat Sudoriferous glands (also known as sudoriparous glands) are exocrine glands that secrete sweat out of the body and onto the skin. Sweat consists of water, minerals and some fat...
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Waiting for answer How do you write ##1/169## as a negative exponent?
##169^1## or ##13^2## When working with exponents a negative exponent always results in a fraction, be it ##2^2## or ##3^123##. This is simply because a rule of exponents to keep...
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Waiting for answer Why are CFC's still harming the ozone layer if they are no l...
The ozone layer is a long way up. The ozone layer is in the Stratosphere. The lowest part of the ozone layer is 20 km up. Any CFCs released take about 10 years to get up there. So...
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