Sunday

March 1, 2015

March 1, 2015

Total # Posts: 978

**physics**

Could you show me how my answer would look please, and would you happen to know aside from the mass what other measurement (numerical value) need to know to calculate GPE?
*April 1, 2012*

**physics**

mass of coaster is 800kg second hill is 70m do you take 800*70*9.8=548800 Please help
*April 1, 2012*

**physics**

mass of a coaster is 800kg height of first hill is 80m What is the agpe for the first hill? I did 800*9.8*80=627200
*April 1, 2012*

**Chemistry**

Would you expect PbCl2 to dissolve in dilute HNO3(aq)? Explain in terms of solubility (Ksp)/equilibrium?
*April 1, 2012*

**geometry**

not sure if youll understand but ill try and explain the picture is a trapezoid i believe b1 is 7cm, and do not have the height but the numbers on the long side is 8cm and the side of b2 is 4cm this part of the pic looks like a right triangle am not able to find the height
*March 31, 2012*

**geometry**

Can someone check my work please? What is the area of the figure below? 18 in² 30 in² 36 in² (my choice) 60 in² What is the area of the figure below? 31.5 m² 63 m² (my choice) 84 m² 126 m² What is the value of h? 9.6 units 26.7 units (my...
*March 30, 2012*

**grammar**

Can someone please check my work? Thank you. Which of the style guides is most focused on professionals who are writing articles for publication? MLA APA Chicago (my choice Which of the style guides no longer recommends citing URLs? MLA APA (my choice) Chicago Are you ...
*March 30, 2012*

**english**

Thank you so muh for your help
*March 29, 2012*

**english**

Can someone check my work PLEASE.. Which of the following is not a strategy for revising your paper? Check for redundant language. Remove overly complicated language. Get rid of euphemisms and clichés. None of the above (my choice) Choose the correct word to complete ...
*March 29, 2012*

**physics**

Show your work for how the formula was used to calculate a final answer! GPE for second hill: ___ _________________++ Describe how conservation of energy applies to a roller coaster ride from start to finish. This is the last part of roller coaster I'd appreciate any help...
*March 25, 2012*

**physics**

To anyone that is able to help their is 3 postings to this assignment and I'd like any help possible.
*March 25, 2012*

**physics**

Calculate the gravitational potential energy (GPE) of your roller coaster at the top of each hill. Assume that the mass of your coaster is: 800 kg. Be sure to show your work by providing an answer for each step! Measurements need to have the appropriate units a.) First Hill...
*March 25, 2012*

**physics**

Is their anyone that goes to CA homeschooling that can help with roller coaster portfolio?
*March 25, 2012*

**english**

I read the story from behind the veil, but did not really understand could someone help me describe some aspects of its setting where it takes place what mood is created by the details of weather, place, and time and how this setting helps to convey the theme of the story.
*March 24, 2012*

**chemistry**

I think I need more help. I tried but I think I'm going in circles on this one and not thinking clearly at this point.
*March 23, 2012*

**chemistry**

How much heat energy is given off when one kilogram of hydrogen gas at 25C and one atmosphere is combined with enough oxygen gas to make liquid water at 25C?
*March 23, 2012*

**Geometry ONE MULTIPLE CHOICE QUESTION PLEASE HELP!**

count to find the value of the colection of coins
*March 20, 2012*

**algebra**

making lemonade requires water and lemon juice in the ratio of 3 cups of water to 2 cups of lemon juice. You need a total of 10 allons for the fair. How many cups of lemon juice do you need?
*March 15, 2012*

**physics**

A 1,040-N crate is being pushed across a level floor at a constant speed by a force of 350 N at an angle of 20.0° below the horizontal; (a) What is the coefficient of kinetic friction between the crate and the floor? (b) If the 350-N force is instead pulling the block at ...
*March 15, 2012*

**geometry**

Describe the image of D first reflected across line l then across line m. You have the letter D then a line up and down L then a space and then a line up and down M. Not sure how to describe the image.
*March 13, 2012*

**geometry**

Is one flag a translation of the other, or a rotation image? Please explain looks like the flag is the same above the line as it is below the line. I think translation but not sure how to explain.
*March 13, 2012*

**geometry**

find the image vertices for a dilation with center (0,0) and a scale factor of 4
*March 13, 2012*

**geometry**

P-->P1(-8,-3) for the glide reflection where the translation is (x,y)-->(x-2,y-5) and the line of reflection is y=-x find the coordinates of P. Can someone please help
*March 13, 2012*

**Political Science**

Based on Bryan Caplan's book, The Myth of the Rational Voter: Offer your own opinion, and critical analysis, to Caplan’s argument about “rational irrationality.” What are the implications about Caplan’s story for American democracy? Do you agree with ...
*March 12, 2012*

**physics**

Josh starts his sled at the top of a 2.0 m-high hill that has a constant slope of 25 degrees . After reaching the bottom, he slides across a horizontal patch of snow. The hill is frictionless, but the coefficient of kinetic friction between his sled and the snow is 0.07.
*March 7, 2012*

**ap chemistry**

I believe you made a slight error in the last calculation from mmol --> mol. The answer should be around 3.8L.
*March 1, 2012*

**sexual analysis**

ayy lmao
*February 29, 2012*

**Math (shown work, please help check)**

Miss B. built a vegetable garden in her backyard. Her rectangular garden was 11m by 9m. Every morning she would notice carrots missing from her garden! In order to keep Bugs Bunny from eating all her carrots, she built a fence surrounding them. This fence had a total perimeter...
*February 28, 2012*

**Math - just need answer checked**

Miss B. built a vegetable garden in her backyard. Her rectangular garden was 11m by 9m. Every morning she would notice carrots missing from her garden! In order to keep Bugs Bunny from eating all her carrots, she built a fence surrounding them. This fence had a total perimeter...
*February 28, 2012*

**Math**

How to Generate Pythagorean Triples using an Odd Number 1. Start with an odd number, e.g. 3. Then the square of 3 can be expressed as the sum of two consecutive numbers, i.e. 32 = 9 = 4 + 5. Therefore the Pythagorean Triples are {3, 4, 5} since 32 + 42 = 52. Generate another ...
*February 22, 2012*

**Math**

1. Start with an odd number, e.g. 3. Then the square of 3 can be expressed as the sum of two consecutive numbers, i.e. 32 = 9 = 4 + 5. Therefore the Pythagorean Triples are {3, 4, 5} since 32 + 42 = 52. Generate another set of Pythagorean Triples starting with the next odd ...
*February 22, 2012*

**algebra**

A DVD player's laser reader helps to "read" the information on the DVD. A particular laser reader measures 0.56 micron thick. Does this fall with the required standards if a company uses |t - 0.03| less than or equal to 0.525 for determining the part to be ...
*February 20, 2012*

**algebra**

a bump on a dvd needs to be between 0.45 and 0.55 micron wide and between 0.95 and 0.99 micron high write two absolute value inequalities describing the width (x) and height (y) of the bump graph each inequality on separate number lines
*February 20, 2012*

**Physics**

i think its 3.7 meters but thats a lil advanced for me so idk
*February 18, 2012*

**Pre-calculus**

If cosx=4/5, cosy=12/13 in Quad. IV, find sin(x+y)
*February 17, 2012*

**Pre-calculus**

If cosx=4/5, cosy=12/13 in Quad. IV, find sin(x+y)
*February 17, 2012*

**Math**

A nickel pyramidal paper weight has a square base of sides 5 cm and a height of 3 cm. What is the mass of a dozen such paper weights if the mass of 1 cm^3 of nickel is 8.9g?
*February 15, 2012*

**geometry**

in traingle FGH, angle 42 is equal to 42 and an exterior angle at vertex H has a measure of 104. What is angle G?
*February 13, 2012*

**Physics**

C = epsilon0*A/d = 8.85*10^-12*0.849/0.001 = 7.51*10^-13 farads Your steps are correct but your answer is miscalculated.
*February 11, 2012*

**algebra 1**

USING EQUATIONS THAT FACTOR How to turn fifteen more than the square of a number is eight times the number into an equation.
*February 9, 2012*

**geometry**

7x over 5 = 42 over 3
*February 8, 2012*

**Chemistry**

972
*February 7, 2012*

**Chemistry**

If a 45.3-g sample of potassium nitrate is dissolved in enough water to make 225 mL of solution, what will be the molarity?
*February 2, 2012*

**Titration Graph?**

Use a spreadsheet to prepare a family of graphs for the titration of 50.0 mL of 0.020 M H2A with 0.100 M NaOH. Consider the following cases: (a) pK1 = 4.00, pK2 = 8.00; (b) pK1 = 4.00, pK2 = 6.00; (c) pK1 = 4.00, pK2 = 5.00.
*January 23, 2012*

**MATH**

Again $25 :P
*January 22, 2012*

**MATH**

Wait my mistake i mean regular price %25
*January 22, 2012*

**MATH**

The regular price is $20. The sale price is $20. What is the discount rate?
*January 22, 2012*

**English**

Please check.
*January 9, 2012*

**English**

imperative mood
*January 9, 2012*

**English**

indicative mood
*January 9, 2012*

**English**

What is the verb mood of the sentence? Wear your coat when you are in the snow. indicative mood imperative mood subjunctive mood
*January 9, 2012*

**English**

present progressive
*January 9, 2012*

**English**

What is the tense of the underlined verb in the following sentence? "I will be studying his painting techniques this summer." present emphatic present perfect progressive future progressive present progressive under lined verb ( will be studying)
*January 9, 2012*

**English**

Please check my answer.
*January 9, 2012*

**English**

In the following sentence, what kind of phrase is "Moving away"? "Moving awat made my little cousin sad." prepositional gerund infinitive participle
*January 9, 2012*

**English**

Please check.
*January 9, 2012*

**English**

predicate adjective
*January 9, 2012*

**English**

"The grain of the western prairies is a major source of income." direct object indirect object predicate nominative predicate adjective Choose the answer that correctly identifies the underlined word. (source)
*January 9, 2012*

**English**

Please check.
*January 9, 2012*

**English**

predicate nominative
*January 9, 2012*

**English**

predicate adjective
*January 9, 2012*

**English**

"Western Canada also gives us the part of the Kwakiutl Indians." direct object indirect object predicate nominative predicate adjective Choose the answer that correctly identifies the underlined word. (us)
*January 9, 2012*

**English**

Please check for me.
*January 9, 2012*

**English**

participal
*January 9, 2012*

**English**

In the following sentence, what kind of phrase is " to play basketball"? "Porpoises have been to play basketball."
*January 9, 2012*

**English**

Can someone please check my answer.
*January 9, 2012*

**English**

In the following sentence, what kind of phrase is " to the library"? "I will be going to the library soon."
*January 9, 2012*

**math**

Jeremy can type 144 words in 144 min. How many words can he type in 10 min at the same rate. Show work
*December 30, 2011*

**math**

swimsuit discounted 65% on sale for $20.30
*December 18, 2011*

**math**

70 pennies decreased by 20%
*December 18, 2011*

**science**

how adipose tissue function when nutrients are plentiful and scarce. Describe what happens to this tissue during a weight loss program and why it’s difficult to keep the lost weight off. Discuss liposuction and state if this is a good method to decrease the amount of ...
*December 18, 2011*

**math**

42 customers increased by 50%
*December 18, 2011*

**College Algebra**

using the knowledge of systems of equations, and that the equation of a circle is (x-h)^2 + (y-k)^2 = r^2, where (h,k) is the center and r is the radius. Find the equation of a circle that contains the following points: (6,2), (4,6), and (-3,5). (These 3 points each create an ...
*December 15, 2011*

**College Algebra**

using the knowledge of systems of equations, and that the equation of a circle is (x-h)^2 + (y-k)^2 = r^2, where (h,k) is the center and r is the radius. Find the equation of a circle that contains the following points: (6,2), (4,6), and (-3,5). (These 3 points each create an ...
*December 15, 2011*

**math**

Find all roots of P(x)= X^4 - 7/2 X^3 + 6x^2 -28x -16
*December 14, 2011*

**Math**

5 hockey pucks and three hockey sticks cost $23. 5 hockey pucks and 1 hockey stick cost $20. How much does 1 hockey puck cost?
*December 1, 2011*

**phi 103**

. Logicians regard the following as the meaning of the word "argument
*November 26, 2011*

**College Chemistry**

What volume of 0.1125 M K2Cr2O7 would be required to oxidize 48.16 mL of 0.1006 M Na2SO3 in acidic solution? The products include Cr3+ and SO42- ions.
*November 21, 2011*

**chemistry**

4g of h2 reacts 70 g of ci2 and forms
*November 16, 2011*

**Biochemistry (BCMB)**

Waste gases containing CO2 from power stations are sometimes pumped through pools containing an aquatic green unicellular alga, such as Chlorella. Explain two benefits of this.
*November 15, 2011*

**Physics**

A high school cheerleader has a baton that is 1 meter long with a 100 gram mass on each end. Another cheerleader has a baton that is 0.5 meter long with the same mass on each end. Neglecting the mass of the rod holding the masses together, which baton will be easier to spin ...
*November 15, 2011*

**Biochemistry (BCMB)**

Why do plants go on to manufacture energy-rich sugars when they already have ATP and NADPH for chemical energy from light reactions of photosynthesis?
*November 15, 2011*

**CHEMISTRY**

well for the first one, should the answer be... K = [H2O]^2 ----------- [H2]^2 + [O2] or should it just be... K = [H2O]^2?
*November 14, 2011*

**CHEMISTRY**

(Re-post) Write the equilibrium constant expression, K, for each of the following reactions. Where appropriate, designate the K as Ksp. 2H2(g) + O2(g)<-->2H2O(g) 2Hg(l) + Cl2(g) <-->Hg2Cl2(s)
*November 14, 2011*

**Chemistry**

Write the equilibrium constant expression, K, for each of the following reactions. Where appropriate, designate the K as Ksp. 2H2(g) + O2(g)<-->2H2O(g) 2Hg(l) + Cl2(g) <-->Hg2Cl2(s)
*November 14, 2011*

**Trig**

I have these sum and product property problems and I just want to make sure my work is right. Write equations expressing 1. cos 37degrees cos99degrees as a sum Answer: sin136+(-62) 2. sin4+sin7 as a product Answer: 2sin5.5 sin-1.5 3. cos 8x - cos 2x as a product Answer -...
*November 13, 2011*

**trig**

I have these sum and product property problems and I just want to make sure my work is right. Write equations expressing 1. cos 37degrees cos99degrees as a sum Answer: sin136+(-62) 2. sin4+sin7 as a product Answer: 2sin5.5 sin-1.5 3. cos 8x - cos 2x as a product Answer -2sin5x...
*November 11, 2011*

**Algebra**

7.5+y<13
*November 9, 2011*

**Algebra**

7.5+y<13
*November 9, 2011*

**Mathematics**

If a piece of wood is 5 cm longer than a second piece, and 3/4 of the second piece is equal to 3/5 of the first, what is the length of the second piece? Explain your workings
*November 9, 2011*

**Chemistry**

Calculate the solubility of AgCl in the following solution: 100mL of .004 M CaCl2
*November 7, 2011*

**Chemistry**

(Qualitative Analysis) I know this is vague, but if i had a solution of unknown cations that appear light purple, what could be the possible list of cations in the solution? I thought Mn, Ag, Cu after doing my own tests, but i am uncertain. Just on a visual analysis though, ...
*November 7, 2011*

**Chem 152**

if x moles of PbCl2(s) dissolve in 1.00L of water, how many moles of Pb2+(aq) are produced? how many Cl- produced?
*November 3, 2011*

**Science **

Technology has been used for centuries to study the ocean. Trace the history of one piece of technology. What do you think is the most important technology to study the ocean? And why do you think so?
*November 3, 2011*

**Math**

How does knowing 26=30 - 4 help you find 7+26?
*November 2, 2011*

**English**

Is "sinecure" used correctly in this sentence: He studied hard throughout college to get a sinecure job.
*October 30, 2011*

**English**

Is "impinge" used correctly in this sentence: Studying Latin every day impinged her grades in both Latin and English.
*October 30, 2011*

**English**

thanks
*October 30, 2011*

**English**

Does this sentence use "Reverberate" correctly?: The sound of thunder kept reverberated in his head.
*October 30, 2011*

**English**

Is anarchy used correctly in this sentence? : As so as the teacher step out of the class room to copys some paper the class was in a state of anarchy.
*October 27, 2011*

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