Thursday
April 24, 2014

Posts by Jack


Total # Posts: 1,295

Science
How does the Sun's rays hitting the Earth affect the seasons?

Chemistry
I see, thanks. Is it safe to say that when the periodic table is divided evenly in two, the elements on the left will always lose electrons when forming ions, and vice versa?

Chemistry
"Would you expect each of the following atoms to gain or lose electrons when forming ions? What ion [cation/anion] is most likely in each case?" Followed by a short list of elements such as Na and Sr. What I'm wondering is how I'm to know? I can't find an...

PHYSICS REPOST
Consider a heavy rope with mass per unit length 2.10 kg/m; a length L=18.00 m of the rope is hanging vertically from a support, as shown. If the support and rope are placed in an elevator accerlerating downward with a=0.800 m/s^2, what is the tension in the rope at point P? (a...

Physics
Consider a heavy rope with mass per unit length 2.10 kg/m; a length L=18.00 m of the rope is hanging vertically from a support, as shown. If the support and rope are placed in an elevator accerlerating downward with a=0.800 m/s^2, what is the tension in the rope at point P? (a...

Physics
Driving in your car with a constant speed of v=13.0 m/s, you encounter a bump in the road that has a circular cross section. If the radius of curvature of the bump is r=33.2 m, calculate the force the car sear exerts on a 72.7 kg person as the car passes over the top of the bu...

Chemistry
Never mind, Hg is mercury. Someone helped me offsite.

Chemistry
If the amount of mercury in a polluted lake is 0.4 µg Hg/mL, what is the total mass in kilograms of mercury in the lake? (The lake has a surface area of 100mi^2 and an average depth of 20 ft.) I'll probably be able to solve this once I know what it's going on abo...

Math
I see, thanks. I must have been doing it wrong when it didn't work.

Math
I don't have any specific problems I need help with, but I'm a bit confused about two things: 1) Where 2^x - 1 = y, is x or y the Mersenne prime? 2) I have noticed that in some cases, such as 27 * 3, I can break the problem up and arrive at the correct result: 27 * 3 =...

biology
what is the hollow ball of cells formed during cleavage?

Biology
What is an isolecithal egg

anthropology
I suppose the discrimination against many people who look like Arabs/Middle Easterners and Muslims in general after 9/11 and the events after it could be considered a global apartheid. Think of any recent racial discrimination common to most of the world.

math
Sorry, I meant square root of 4x to the fourth, unless you mean (four times four) to the fourth, which would be (4*4)^4 and would be solved differently. 4x^4 = 4x * 4x * 4x * 4x, then find the square root.

math
Square root of four to the fourth? This'd be written as sqrt(4^4). 4^4 = 4 * 4 * 4 * 4. Find the product of that, then the square root of the product.

please proofread my paragraph
1. "I was surrounded in noise every day" "I was surrounded by noise every day" 2. "I liked how everyone follows the rules and how everyone drives their car in their own lanes." You've changed tense in the middle of the sentence here; try "...

math
Oh! Thanks. XD I've been rearranging polynomials all day and I swear it's hardwired now. "Parentheses; distribute, resistance is futile"

math
Actually, I come to h = 160 here (?) so I think I've done something wrong. Are you not supposed to distribute when multiplication is used as in (32 * h)? Sorry, you might want to wait for someone else to explain.

math
You should distribute first: 96 = .5(32) + .5h 96 = 16 + .5h Do you know what to do from here?

math
That's better. The area of the rectangle is (12 * 8) or 96 sq. in. 96 = .5(32 * h) Solve for h; post if you need more help.

math
Is there enough information to solve this? I can't figure out how it might be set up (even plugging in answers to see if they fit) without more information, such as some about the rectangle, or the area of the triangle. Maybe someone else knows.

math problems
2(24 * 9) + 2(18 * 9) = ? (Four walls -- two 24 by 9 and two 18 by 9, equal the amount of wallpaper needed). Don't forget to convert the result from feet to yards.

biology
Plankton, I think, as most other marine organisms depend [at least indirectly] on plankton, as they feed on them or feed on those who feed on them, and the absence of the base of a marine food chain would cause more problems overall than that of a group of predators.

Math
Compute is to calculate or evaluate.

math
Fractions are converted to decimals by dividing a by b in a/b. For example, 3/4 = .75. Some decimals and fractions are easy to remember -- such as 1/2 = .5, but most you will have to calculate on your own.

Maths
I thought that one million billion would be represented as (10^6)^9 in which case it would be 10^54 but the handy-dandy calculator begs to differ. The output is the same for 1,000,000*1,000,000,000 and 10^15. I can't explain to save my life, so wait around for bobpursely t...

Math
4(x+5)+3x squared+6(x+1) 4(x + 5) + 3x^2 + 6(x + 1) (^n represents ...to the power of n) First, distribute 4(x + 5) and 6(x + 1): 4x + 20 + 3x^2 + 6x + 6 Then combine like terms 4x and 6x; 20 and 6: _______________ |10x + 26 + 3x^2| ‾‾‾‾‾‾&#...

mathematics
The two-dight number that is divisible by both the sum and the product of its digits?

mathematics
A number n where if the sum of the dights of the number is divisible by n, then the number itself is divisible by n.

mathematics
One of the four numbers where n,has n dights????????????????????????????????????????????????????????????????????????????????

math
The largest integer that is not the sum of two or more different primes?

math
The Pythagorean masculine marriage number?

mathematics
I bet no one knows.

math
Use Google as a converter. These queries: 45 grams in milligrams (or '45g in mg') 3.7m in cm 2.34kilolitres in litres etc. Will all convert for you.

Algebra 1
4n-2+7n=20 First, we can combine the like terms 4n and 7n to get: 11n - 2 = 20 Then, add two to both sides: 11n = 22 Then, divide both sides by 11: n = 2

science
An experiment of your own is generally a reliable way to support or disprove your hypothesis, but if you don't have time or resources for it you could search for similar experiments or Google to see if there's anything written about our ability to locate stimuli improv...

spanish HELP HELP
I'm having trouble making sense of the first sentence, maybe because I'm tired, but I think 'le' is correct. In 2, the waiter, being not the direct object but affected by the subject's actions on the DO, is the indirect object, and le is correct. In 3, as f...

math
Yvonne drove 11/2 hours to get to the airport. She arrived at 12.10A.M What time did she leave for the airport? Should she have lunch at the airport? why?

Reading
I believe that's the one. It may be dozed is to napped, but IMO you're likely correct.

Reading
Slipping leads to or is a lesser form of falling. What word pair matches that?

math
Associative property -- however a group of terms is arranged, their sum remains the same.

language arts
The verb they've given you is wrong; you need to find the correct form of it. Present: Speak. Past: Spoke. Past participle: Spoken. I speak, I spoke, I have spoken. If it's used with a helping verb such as 'have', it's likely a past participle. The appropri...

spanish
Whoops, thanks. XD

spanish
It'd be "a la una y media" just as in "es la una..." unless I've forgotten and am doing it wrong. I haven't had to tell time in Spanish outside of classes, funnily enough, so I could have made a mistake.

spanish
To indicate the time at which something happens, use "a la..." or "a las..." as in: La clase comenza a la una y media y termina a las dos y catorce -- The class begins at 1:30 and ends at 2:14.

division
The result of the operation. In 8/2 = 4, 4 is the quotient.

Reading
A paw is part of a cat. What pair of those choices fits the same description?

science
As far as I know, height is an object's distance from the immediate ground (the distance of the top of a flagpole from the ground below) whereas elevation is the height of an object or area of land above sea level.

Algebra
(y^5)^3(y^3)^2/(y^4)^4 Power of a power: When an exponent has an exponent, both are multiplied and applied to the base of the first. Example: (y^5)^3 = (y^15) When multiplying terms with exponents, the exponents are added: (y^15)(y^6) = (y^21) When dividing, they're subtra...

computers
n. Data entered into a computer; v. To enter data into a computer (as I am by typing).

Grammar -- subject-verb agreement
Thankya. :o

Grammar -- subject-verb agreement
We're to choose the appropriate verb for the subject El oh el, I fail; I meant pronoun.

Grammar -- subject-verb agreement
Oh, I was doing it wrong, looking at the surrounding context and not the subject it was related to, wasn't I? Thanks.

Grammar -- subject-verb agreement
"Susannah Wheatley, wife of slaveholder John wheatley, took great interest in Phillis's education, and it was (she/her) who taught Phillis how to read and write English." We're to choose the appropriate verb for the subject (Susannah Wheatley), but I'm ha...

math
I'm glad to hear it worked out alright. :D

math
It's not usual for some people to feel overwhelmed by such an open-ended assignment -- I was often confused when I wasn't told exactly what I was to do (I worried that I'd do it wrong, maybe?). If it were me, I might go for a poster, and come up with creative ways ...

algebra 1
Are you supposed to solve for something?

Robinson
> is greater than. A good analogy is to imagine that the greater/lesser than sign is a mouth that always turns to eat the larger value. 1 < 2 -- One is less than two; the gluttonous mouth wants the bigger one, of course. ;)

French
The first should be "Parlez-vous francais?"; the other two seem correct from my knowledge of Romance languages, but I don't speak much French and you should wait for someone who does to clarify.

Business
I would list essential services such as medical care and food service (welfare of sorts?), but it seems largely up to opinion.

English
This alone do I abominate – that this confession has been subjected to the despotism and extortion of the pontiffs. To clarify: "This alone do I abominate: that this confession has been subjected to the despotism and extortion of the pontiffs." It seems to be th...

science
What are the four chemical building blocks of cells?

riddle help please
Have you worn a wool sweater?

Social Studies repost for Tiffany
A slave counted as 3/5 of a person.

MATH
Colinears, according to Google search "define:colinear" are vectors which lie along the same straight line. I don't know anything about this so I can't explain further but that may help.

Biology
Styrofoam and toothpicks?

science
x in one half hour equals 2x in one hour; 20km:30mins::40km:60mins.

SAT -English
I see, thanks. It looks like it might also be possible to use 'toward' (if I'm right in thinking the definition 'in regard to' is in use here) and it does Sound Right but I never see that. I liked English more when I didn't think about it.

SAT -English
What's funny is that I don't know /why/. I always see 'with' used here, but have no clue why it is that way. Does anyone know if it has a reason for not being 'for' or 'of' instead, or is it just arbitrary?

SAT -English
It should be 'with'.

need an answer checked
Looks all right to me.

science
63/2.7 = x cubic centimeters

Canterbury Tales
Project Gutenberg (Google it) has free plain text e-books. Search for 'canterbury' in the sidebar. They seem to have it there.

math
solve the equation 3=4tan(2x+Pi/6) for x

algebra
x - (2x - 8) = 11 Distribute: x - 2x + 8 = 11 Simplify: -x + 8 = 11; solve for x then plug it back in to get the second number.

riddle
Try to find a copy of the Ten Commandments of the Christian bible, and see what is said to come before God. Think also of something you can eat that will eventually kill you, that also meets the other criteria (rich people need it and poor people don't). It's a riddle;...

Math
Google query 'online calculator' returns quite a few of them.

Spanish
I think that "Hizo pedazos de los coches" might be what you need, as it would transliterate into "It made pieces of the cars" rather than "It made pieces the cars", but "hizo pedazos [noun]" could be idiomatic or not necessarily grammati...

Science
Sand and other substances that will not dissolve in water.

Survey
If you could name a song/band/anything else what would you name it? Thanks for the cooperation!!

unscramble
Google "anagram generator" and try there. Maybe someone will come along with methods of doing it yourself. I'm rubbish at things like this so can't help you there. :P

s.s
A manor was, in medieval England, an agricultural estate owned by the lord of the manor, in part leased to and farmed by tenants. I've seen it used to refer to a mansion or similarly large house, but not a castle.

English
Can you post some examples?

English
What do you mean? I can't decide whether you want to parse a sentence or decrypt something.

science
100,000 what? One mL = 1/1000 litres; 1,000 microlitres (µl) and 1,000,000 nanolitres (nl), but there's no prefix that results from 1 ml converted into another measure of litres.

Science
Meniscus. (Measure at the bottom of it.)

English
Neither. ô.o If anything, it's assonance.

English
On second thought, I was too focused on "Look, there's a rhyme, probably not assonance" to notice: Let in said pin Where, depending on pronunciation, you could get the same (or close to the same) eh sound in each word, as well as 'the'. I'm not sure, ...

English
I don't think so. There's a rhyme (in/pin) but no assonance (repeated vowel sounds; think alliteration with vowels).

English
If you haven't already read them, I recommend Watership Down (Richard Adams), pretty much anything by George Orwell that catches your eye (especially "1984"), and Fahrenheit 451. If you like fantasy, David and Leigh Eddings have some good books; my favorites were...

English
I think the only words that take no articles (a/an/the) ever are proper nouns ("A Cindy"; "The Canada"). Mass nouns or noncountable nouns such as furniture and data can't be expressed as "A [noun]" but as "A [unit] of [noun]", as in ...

Grammar
True, and that's why people learning foreign languages, especially without practising it as it's actually used by living in a region that speaks the language, may never reach the fluency a native speaker has. It almost discourages me from learning them. :P Thanks for a...

Grammar
(I have no formal education on the subject but have recently begun studying linguistics and can't help wondering why I do certain things in language and whether they're incorrect/awkward/perfectly fine).

Grammar
Thanks, all. Ms. Sue: Is "I did try" any different from "I tried"? It seems to insist that I /did/ try, rather than inform that I tried with no especial emphasis, but is it gramatically different?

Grammar
It's a personal narrative, actually; I shouldn't have called it an essay. It isn't meant to be overly formal so I'm allowing myself a bit of looseness but not all-out incorrectness in grammar, if you see what I mean.

Grammar
Is it disallowed or simply awkward to write in the order SUBJECT VERB, as in "Try I did, but to no avail"? Also, I can't figure out what role 'did' plays in this sentence but I'm quite sure it's necessary. Is it there only to assert the past tense...

We don't do YOUR WORK
We can be courteous and nice. I personally consider it more of a detriment for a student (which I am as well; stop with the "wah, you can't relate to me" business) to be given any answers. I know you hate this by now, but that won't fly in the Real World. We ...

We don't do YOUR WORK
Hear, hear.

social studies
Find a world map and pick four large, not-landlocked bodies of salt water which make up large parts of the earth's water. Google's your friend. Hint: Pacific is one.

math
Wow, this is a rather popular question. See jiskha(.)com/display.cgi?id=1188941103

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