Open Question: The difference between energies of formation and energies of atom combination is?
Open Question: what is the difference between bandwidth and selectivity?

Open Question: what is the difference between bandwidth and selectivity?

Home >All Categories > Science & Mathematics >Engineering >Open QuestionCheepa Jagga Cheepa Jagga Member since:April 21, 2011Total points:95 (Level 1)I want theoretical meaning, I have a confusion while reading Boylestad's Electric Circuit Theory Book. I just read two contradicting statements regarding bandwidth and selectivity. It would be great if you can explain. Thanks.Answer Question

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Open Question: How much do you know the difference between Forest and Jungle?
Open Question: Is there a difference between saying f(a) is algebraic over F and saying a is algebraic over F?

Open Question: Is there a difference between saying f(a) is algebraic over F and saying a is algebraic over F?

Here is some more information if it helps to undertstand the circumstance.
let f(x) be a nonconstant element of F[x]
a belongs to some extension of F

If they are different can someone please explain to me how becasue they seem like the absolute same to me...

Thank you!


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Open Question: . What method would help you choose between two cladograms?

Open Question: . What method would help you choose between two cladograms?

Home >All Categories > Science & Mathematics >Biology >Open QuestionLorita Lorita Member since:April 15, 2011Total points:66 (Level 1)a) Counting the number of derived character states
b) The method of Maximum Parsimony
c) Removing all synapomorphies from both cladograms
d) Removing Mammal characteristics from the used Character StatesAnswer Question

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Open Question: Chemical bonding between boron trifluoride and sodium fluoride.?

Open Question: Chemical bonding between boron trifluoride and sodium fluoride.?

Home >All Categories > Science & Mathematics >Chemistry >Open Questionsunbeams sunbeams Member since:April 16, 2011Total points:100 (Level 1)BF3 is a pungent colourless gas (b.p. -101 degree celcius). NaF is a solid (m.p. 992 degree celcius). When BF3 reacts with NaF, it forms a compound NaBF4.
a) Describe, in terms of bonding, how NaBF4 is formed.
b) Suggest, with reasons, 2 properties of NaBF4.Answer Question


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Open Question: Is there a difference between a super capacitor and an ultracapacitor?
Open Question: Whats the differences between a lamb and a calf?

Open Question: Whats the differences between a lamb and a calf?

A lamb is a baby sheep.
A calf is a baby cow.

the appearance should be obvious to you . . . . .

Sorry, I could not read the content fromt this page.

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Open Question: Use Chebyshev’s theorem to find what percent of the values will fall between 162 and 292 for a data set with a?
Open Question: 3 major components needed to understand the relation between a graph, a linear equation, and a table of values?

Open Question: 3 major components needed to understand the relation between a graph, a linear equation, and a table of values?

so i need this on an assignment for school and i wasn't really listening when he explained it. I just want the 3 components in paragraph form. :P oh and dont add to many sophisticated words because im copy and pasting.

heres the question word for word: describe the 3 major components necessary to help you understand the relationship between a graph, equation and a table of values.


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Open Question: How close would the masses 0.470 kg and 0.102 kg have to be in order for the gravitational force between them?

Open Question: How close would the masses 0.470 kg and 0.102 kg have to be in order for the gravitational force between them?

They would have to be so close that no imaginable material could be dense enough.

The basic formula is F = G Mm/ R^2
G is the universal constant of gravitation. ( = 6.67 * 10 ^ -11)
Rewriting we get R = sqrt ( G Mm/F)
= sqrt(6.67 * 10 ^ -11 * 0.47 *0.10/1.01)
=1.76 * 10 ^ -6 m.


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Open Question: What is the difference between introns,exons andc codons?
Open Question: One assumption of the Kinetic Molecular Theory is that there are no forces of what or what between gas molecu?
Open Question: what is the similarity between foliated metamorphic rocks and sedimentary rocks?
Open Question: can you give me the reaction between AOS (alpha olefin sulfonate) and?
Open Question: How can I tell the differences between animal & rock damages to fossils?

Open Question: How can I tell the differences between animal & rock damages to fossils?

I'm studying the Pleistocene Epoch which is around 2.5 to 12,000 years ago. The fossils are from the recent discovery in Snowmass, Colorado. Predators during the time period include wolves and other similar carnivores

I'm mostly working with mastodon, mammoths, and sloths and similar mammals. The ribs on these creatures have many markings all throughout the bone, and it is difficult to tell what lines represent rock damage/earth damage and what lines represent the damages from carnivores teeth cusp.

I would like to know what I could see to indicate what is damage from the earth/rocks on fossils and what was gnawing from animals? I know I should look for gnawing patterns but it's hard to tell. Also is there anyway to tell if the animal that ate it was say, a wolf? Thanks


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Open Question: Calculate max KE that is stored in flywheel and the max distance between stations on the level?

Open Question: Calculate max KE that is stored in flywheel and the max distance between stations on the level?

Home >All Categories > Science & Mathematics >Physics >Open QuestionVERTREX VERTREX Member since:April 04, 2010Total points:113 (Level 1)In the design of a passenger bus, it is proposed to derive the motive power
from the energy stored in a flywheel. The flywheel, which has a moment of
inertia of 4.0 x 102 kgm2, is accelerated to its maximum rate of rotation of 3.0 x
103 revolutions per minute by electric motors at stations along the bus route.
a) Calculate the maximum kinetic energy that can be stored in the flywheel.
b) If, at an average speed of 36 kilometres per hour, the power required by the
bus is 20 kW, what will be the maximum possible distance between stations
on the level?Answer Question

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Open Question: How to find the shortest distance between two curves?
Open Question: what is the relationship between dewpoint and the amount of water vapor in the air?
Open Question: Differentiate between the various crosswind communication flow?