Thursday
October 23, 2014

Posts by Jake


Total # Posts: 1,754

physics
I worked it out and got 4.8N
February 25, 2013

science
The acceleration of gravity on the surface of Venus is 8.9m/s^2. Would a ball thrown upward on Venus return to the ground sooner or later than a ball thrown upward with the same speed on the earth?
February 22, 2013

science
A force of 20 N gives an object an acceleration of 5m/s^2. (a) What force would be needed to give the same object an acceleration of 1m/s^2? (b) What force be needed to give it an acceleration of 10m/s^2?
February 22, 2013

math
0.5, 3/5, 1 3/4, 0.9 in order from least to greatest
February 21, 2013

chemistry
How do you find q in q=mC delta t without the mass
February 21, 2013

trigometry
1. A 16-foot ladder on ground level is leaning against a house. If the base of the ladder is placed 5.0 feet from the house, what is the angle formed at the top of the ladder? A. 24° B. 18° C. 72° D. 20° please help I don't know how to do this
February 20, 2013

Calculus
calculate the derivative (2,5) (2.1,5.3) h'(2) if h(x)=(f(x))^3 k'(2) if k(x)=f(x))^-1 g'(5) if g(x)=f^-1(x)
February 18, 2013

Physics
You run a race with your friend. At first you each have the same kinetic energy, but then you find that she is beating you. When you increase your speed by 21.0%, you are running at the same speed she is. If your mass is 77.0 kg, what is her mass?
February 10, 2013

calc
agree thank you steve
February 5, 2013

calc
find the derivatives of the given functions. g(t)=sqrt t(1+t)/t^2
February 5, 2013

Math PLEASE HELP FAST!!!!
c
January 30, 2013

history
ms.sue,thank you for the answer, but i have to discribe the things Juan Ponce De Leon discovered in his journey to the new land! My homework question is, discribe the things he discovered in his journey to the new world like plants,animals,people and land???
January 29, 2013

history
what did Juan Ponce De Leon discover in his journey to the new world: plants,animals,people,land?
January 29, 2013

math
If a hiker walks trail B (1 mile in length) at 6 mph and trail C (3 mils in length) at 2 mph, what is the hiker's overall average speed, in mph, for hiking on the two trails?
January 28, 2013

Math on time
thank
January 27, 2013

Math on time
Trying to understand how to solve this? Paige spends 1 hour on her homework. She spends equal amounts of time on all subjects. If Paige spends ½ hour on Spanish, how many subjects does she study?
January 27, 2013

Math
The area of certain rectangle is 288 yd. the perimeter is 68 yd. if you double the length and width, what will be the area and perimeter of the new rectangle.
January 23, 2013

Math
A plane leaves Boston at 10 am (Boston time) and flies non-stop to LA, 2700 miles away, at 580 miles per hour (mph). On the same route, a second plane is flying non-stop from LA to Boston at 620 mph. If the second plane lease LA at 10 am (LA time), how many miles from LA will ...
January 22, 2013

English/Essay
Could someone tell me if I have done my essay the right way? Please its due Monday?? "The internet is a much easier resource for students than a library” The first reason the internet is a much easier resource for students than a library, you can Find specific ...
January 12, 2013

9th grade algebra
25.4
January 10, 2013

Pie Charts
On the pie chart it reads: 1999 U.S. Electricity Generation by Fuel Type (Billion Kilowat hours) Coal: 1882, 51% Natural Gas:565 15.3% Petroleum: 119, 3.2% Nuclear: 728, 19.7% Hydroelectric: 307, 8.3% Other Renewables: 89, 2.5% What was the total amount of electricity ...
December 13, 2012

8th grade math
Jerome, Kevin, & Seth shared a submarine sandwich. Jerome ate 1/2 of the sandwich, Kevin ate 1/3 of the sandwich and Seth ate the rest. What is the ration of Jerome's share to Kevin's share to Seth's share? 1. 2:3:6 2. 2:6:3 3.3:1:2 4.3:2:1 5.6:3:2 please help!
December 7, 2012

Social Studies
I don't have an atlas and I need help finding the location. I need the nearest city and the country that it's in. Thank you. 1. 31° s, 64° w 2. 13° s,71° w 3. 16° s, 68° w
December 6, 2012

algebra
matching graphs inequailty
December 6, 2012

Physics
16) A curve of radius 120 m is banked at an angle of 18°. At what speed can it be negotiated under icy conditions where friction is negligible? 2 m/s 12 m /s 20 m /s 5 m/s 11 m/s
December 6, 2012

algebra2
how do you find out the vertex when graphing inequalities of quadratics in equations like this y<x^2-16 it factors out to like x+4 x-4 and I know that i can use that to find the x intercepts but the way to find the vertex i dont understand
December 4, 2012

english
another word for nothing more than? For example, if you say that advice is nothing more than
December 2, 2012

algebra 2
sorry i needed to add more info for this to make sense the problem is asking to write the quadratic equation that has those roots. so in this case i'd use those roots to find -b/a but i dont get how that correlates to -b/a?
December 2, 2012

algebra 2
how is 7-3i + 7+3i = 14/1 we're doing sum and product of roots, and i dont get how this is equal to 14
December 2, 2012

Algebra
Each team in a soccer leaguehas played every other team 5 times. Current league standings are: Team A 37 Points Team B 34 Points Team C 28 Points Team D 26 Points Team E 20 Points If a team receives 3 points for a win, 1 point for a tie, and 0 points for a loss, how many of ...
November 29, 2012

Chemistry
What is the molality of a solution formed by dissolving 1.95 mol of KCl in 17.0 mol of water (MM of water = 18.02 g/mol), answer in 3 sigfigs?
November 26, 2012

math
4x/5-x=x/15-20/3=
November 21, 2012

Physics
A uniform rod of length L and mass m initially at rest is struck by a horizontal force F0 a distance x below the pivot O. The rod is free to rotate about its pivot without friction. If F0 is the average value of the force and Δt is its duration. (a) What is the speed of ...
November 17, 2012

Science
How much force was used to move a box 42m if 13,734 J of work was done on it?
November 16, 2012

physics
What is the angular momentum of a figure skater spinning at 4.4 with arms in close to her body, assuming her to be a uniform cylinder with a height of 1.6 , a radius of 15 , and a mass of 53 ?
November 11, 2012

Physics
A class of 11 students taking an exam has a power output per student of 122 W. Assume that the initial temperature of the room is 18.8oC and that its dimensions are 6.40 m by 14.5 m by 3.50 m. What is the temperature (in oC, do not enter units) of the room at the end of 54.0 ...
November 11, 2012

Physics!
If a water heater has a capacity of 54.4 gallons and a 4910 W heating element, how much time is required to raise the temperature of the water from 19.8oC to 60.0oC? Assume that the heater is well insulated and no water is withdrawn from the tank during this time.
November 11, 2012

Physics
Sorry, rotational inertia I = 6.4 * 10^-3 kg*m^2. I really am stuck on this, can't figure out how to use angular momentum/torque relations to connect the dots and be able to solve for what they're asking ;\.
November 9, 2012

Physics
A gyroscope with rotational inertia 6.4 10-3 kg·m2 is precessing in a horizontal plane at 0.46 rad/s under the influence of a 0.31 N·m torque caused by a force pointing vertically downward. How fast is the gyroscope spinning on its axis?
November 9, 2012

chemistry
I don't think this makes sense... there are not any oxygens on the left so Im pretty sure it doesn't work, unless you just add oxygen to the left im not sure you can do that though... If so it would look like this KNO3 --> KNO3 + O ^add O to this side as well Once ...
November 8, 2012

chemistry
Fe(s) +Pb^2 (aq)---->Fe ^2+ (aq) +Pb(s) which reactant has been oxidized
November 4, 2012

English 8R - Homework Check (plzzzz read)
Very obvious you have copied... we have all done it before... just put it in your own words (especially in the beginning)
November 4, 2012

Science
wuz up
November 2, 2012

Calculus
A rectangular cardboard poser is to have 150 sq ft in for printed matter. It is to have a 3inch margin at the top and bottom and a 2inch margin at the right and left. Find the dimensions of the poser so that the amount of cardboard used is minimized.
October 29, 2012

math
explain why the equation x^(5)-3x+1=0 must have a solution with 0 < x <1
October 29, 2012

Chemistry
Determine how many mL of solution A (acetic acid-indicator solution) must be added to solution B (sodium acetate-indicator solution) to obtain a buffer solution that is equimolar in acetate and acetic acid. Solution A: 10.0 mL 3.0e-4M bromescol green solution 25.0mL 1.60M ...
October 29, 2012

Physics
because b and m_o are constants and i believe that e^-kt is taken as a constand as well. Leaving dx to be integrated between 0 and x(t). am i correct? more opinions welcomed please
October 25, 2012

Physics
I think that the answer comes out to be v(t)=(uk-g)t - b*m_o*(e^-kt)*x(t)
October 25, 2012

Physics
A rocket ascends from rest in a uniform gravitational field by ejecting exhaust with constant speed u. Assume that the rate at which mass is expelled is given by dm/dt=mk, where m is the instantaneous mass of the rocket and k is a cosntant, and that the rocket is retarded by ...
October 25, 2012

BC Calculus
Use linear approximation to estimate sec^2(pi/4 + .025) Need help quickly please!! :)
October 24, 2012

math
Samuel solved the equation h – 234 = 1,192 and found the solution to be h = 958. Is he correct? He is right I think because when you subtract 234 from 1192 it equals 958 right?
October 23, 2012

Calculus
simplify log2(4x^2 2^x)
October 22, 2012

math
In an election, Kate lost to Lee by 32 votes. Because the vote was so close, they decided to have a re-vote. All of Kate's supporters voted fro her again, but some of Lee's supporters switched their votes to vote for Kate. Kate won by the revote by 6 votes. How may of ...
October 21, 2012

math
What is the distance between the rectangular coordinates (1,16) and (10,4)?
October 21, 2012

goverment
in the recent presidential election, romney's comment "binders full of woman" really offended people. why were people so offended, i dont really understand, did he mean something bad?
October 21, 2012

calculus
Write h(x) = 6x^4 - 2x^2 + 1 as a composition of two functions f and g
October 20, 2012

Literature
13. Scan this line from Cowley's poem: "its hills bent low within my reach." How many feet does this line contain? A. 5 B. 7 C. 6 [D. 4]
October 15, 2012

Literature
c is the correct answer finished the tesr
October 15, 2012

Literature
5. As we find with most songs, in poetry [A. there's no specific point of view.] B. each couplet must rhyme. C. sound and content have equal weight. D. meanings are hidden in imprecise words.
October 15, 2012

Literature
2. In The Call of the Wild, the bond between Buck and Thornton is best explained by observing that A. dog and man were like mirror opposites. [B. dog and man were both in touch with their primordial nature.] C. Buck had helped Thornton pay off his debts. D. Buck found Thornton...
October 15, 2012

chemistry
what fraction of an original sample of a radioactive isotope remains after three half-lives have passed? 1/8?
October 13, 2012

Statistics
A 50-question true-false exam is given. Each correct answer is worth 10 points. Consider an unprepared student who randomly guesses on each question. In your solution, please be sure to show the exact steps you used to arrive at the answers. A. If 5 points are deducted for ...
October 10, 2012

Calculus
thank you
October 9, 2012

Calculus
Find the derivatives of the function f(y)= sinh(sinh(7y).
October 9, 2012

math
A candle is 17 in. tall after burning for 3 hours. After 5 hours, it is 15 in. tall. Write a linear equation to model the relationship between height h of the candle and time t. Predict how tall the candle will be after burning 8 hours.
October 9, 2012

world history
its A
October 8, 2012

world history
4. Which pope wanted Christians to unite to redress what he saw as an imbalance of power between Christianity and Islam? A. Pope Urban II B. Pope Clement VI [C. Pope Benedict] D. Pope John Paul
October 8, 2012

world history
yes
October 7, 2012

world history
13. _______ was the first thinker to postulate that numbers are real, not abstractions. A. Hui Shih [B. Pythagoras] C. Parmenides D. Aristotle
October 6, 2012

world history
its d
October 6, 2012

world history
i cant find where it says this
October 6, 2012

world history
12. The Chinese philosopher Xunzi wrote that if a person attempted to cure rheumatism by beating a drum and sacrificing a pig to the gods, then the A. rheumatism wouldn't get better because proper therapy required playing a flute and sacrificing a chicken. B. rheumatism ...
October 6, 2012

world history
11. Which of the following is not one of the new thoughts of or about God that were formulated in the Axial Age? A. Many Gods B. Divine God [C. Single God] D. Involved God
October 6, 2012

world history
8. What strategy did Buddhist and Christian missionaries employ to spread their faith that Muslims didn't? A. Conversion of kings and other elite figures B. Use of artifacts C. Forceful conversion of others [D. Conversion of merchants]
October 6, 2012

world history
is it c
October 6, 2012

world history
7. In the development of the Roman Empire, the Romans treated citizenship as A. a benefit worthy only of peoples who had freely joined them. [B. belonging only to native Romans.] C. meaningless because the Roman Empire was tyrannical. D. something to be shared with conquered ...
October 6, 2012

world history
6. After its conquest by Alexander the Great, the government of the Persian Empire A. was transformed into a democratic monarchy. B. became a democracy. C. was ruled by a traditional Macedonian monarchy. [D. was maintained more or less intact.]
October 6, 2012

world history
5. What religion, which had potentially universal appeal, was created by Gautama Siddhartha in India? [A. Buddhism] B. Hinduism C. Zoroastrianism D. Jainism
October 6, 2012

world history
3. What geographic feature at times made life difficult for the Moche of South America? A. Mountains [B. Desert] C. Lack of access to the sea D. Unpredictable rivers
October 6, 2012

world history
2. In forming his government, Asoka recruited what group to serve as bureaucrats? A. Traditional Brahman elites [B. The Buddhist clergy] C. The military elite D. The rising merchant class
October 6, 2012

world history
1. Which of the following were major items of trade in the West African states of Ghana and Gao? A. Bananas and copper B. Cacao beans and slaves [C. Gold and salt] D. Coffee and sugar
October 6, 2012

american history
Thomas alva edison
October 5, 2012

biology
6. During division in cellular reproduction, the DNA and cytoplasm of the parent cell is distributed to two A. chromosomes. B. clones. C. simplified cells. [D. daughter cells.]
October 3, 2012

economics
When the price of X is $1 and the price of Y is $1 and income is I, Joe Panther spends $100 on good X. One day Joe is walking down Downer street and is dismayed to discover that the price of good X has increased to $2. However, moments later Joe is delighted to find a $100 ...
October 2, 2012

chemistry
The metabolic oxidation of glucose, C6H12O6, in our bodies produces CO2, which is expelled from our lungs as a gas. C6H12O6(aq) + 6 O2(g) → 6 CO2(g) + 6 H2O(l) Calculate the volume of dry CO2 produced at body temperature (37°C) and 0.980 atm when 25.5 g of glucose is...
September 30, 2012

physical science
explain why elements in a group on the periodic table have similar chemical properties?
September 28, 2012

chemistry
56
September 26, 2012

adverb
She will always see the truth an adverb is "always" or "will always"? please help
September 26, 2012

Social Studies
I have to create an ad based on my knowledge of 1610 o get more settlers to come to the new world
September 26, 2012

reading
In "The Adventure of Dying Detective" what is Mr. Culbertson Smith's motivation? A) To become Sherlock Holmes' partner B) To kill Sherlock Holmes so that he can get away with Savage's murder C) To frame Sherlock Holmes for Savage's murder D) To poison...
September 25, 2012

Reading
In The Adventure of Dying Detective, it is true Inspector morton was signaled to come to sherlock Holmes' room when watson yelled for him?
September 25, 2012

english
Where is answer
September 24, 2012

Math - Quadratic Factor
thanks
September 24, 2012

Math - Quadratic Factor
can someone explain how to do this problem, please. 6x^2 + 13x +2 + 0
September 24, 2012

chemistry
A photocell is a device used to measure the intensity of light. In a certain experiment, when light of wavelength 530 nm is directed on to the photocell, electrons are emitted at the rate of 5.1 10-13 Coulombs/sec. Assume that each photon that impinges on the photocell emits ...
September 23, 2012

word power
8. Often applied to politicians, the term _______ suggests hiding one's feelings while obscuring or "spinning" facts. A. simulate B. dissimulate C. vacillate [D. dissemble]
September 21, 2012

word power
13. One who is intrepid [A. is brave and fearless.] B. is reckless and foolhardy. C. practices self-honesty. D. doesn't stumble and fall.
September 20, 2012

word power
9. A person described as perspicacious is [A. smart and perceptive.] B. inclined to be optimistic. C. inclined to be pessimistic. D. foolishly persistent.
September 20, 2012

word power
i think it is b poised
September 20, 2012

word power
4. Someone who is urbane is A. tireless. B. poised. C. witty. [D. friendly.]
September 20, 2012

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