Saturday
August 29, 2015

Posts by Tyler


Total # Posts: 723

Chemistry
1) A dog has the same mass for 3 years. State whether this represents an equilibrium or steady state situations, and give your reasons. I'm not sure if I got this question right... I think this is a steady state because the dog is opened to the environment where oxygen is ...
November 25, 2013

math ms sue please help, PLEASE!!!!
c & d
November 13, 2013

Chemistry
For the reaction Zn(OH)2(s)+4CN-(aq)->Zn(CN)4 2-(aq)+2OH-(aq) find [CN-] when 8.5 g of Zn(OH)2 are dissolved in 1.00 L of solution.
November 10, 2013

math help plzzzz!!!!
5 is wrong
October 30, 2013

physics
a .150kg object tied to a string is whirled in a horizontal circle ata constant angular speed of 3.50 revolutions per second. the tension is the string is 75newtons. what is the length of the string?
October 27, 2013

Can someone check these answer for me?
1. B 2.B 3.D 4.D 5.A
October 17, 2013

Can someone check these answer for me?
is someone on
October 17, 2013

science help plzzz
PLEASE HELP
October 17, 2013

science help plzzz
1. A 2.D 3.B 4.C 5.B
October 17, 2013

Physics
A "swing" ride at a carnival consists of chairs that are swung in a circle by 19.8 m cables attached to a vertical rotating pole, as the drawing shows. Suppose the total mass of a chair and its occupant is 144 kg. (a) Determine the tension in the cable attached to ...
October 3, 2013

Physics
At an amusement park there is a ride in which cylindrically shaped chambers spin around a central axis. People sit in seats facing the axis, their backs against the outer wall. At one instant the outer wall moves at a speed of 3.44 m/s, and an 64.3-kg person feels a 277-N ...
October 3, 2013

Physics
A centrifuge is a device in which a small container of material is rotated at a high speed on a circular path. Such a device is used in medical laboratories, for instance, to cause the more dense red blood cells to settle through the less dense blood serum and collect at the ...
October 3, 2013

chemistry
Calculate the number of hydrogen molecules formed when 5.6 mL of ammonia at STP is decomposed by the following reaction: ___NH3 „³ ___ N2 + ___ H2
September 25, 2013

chemistry
Calculate the volume of oxygen at STP required to burn 3.7 kg C3H6O2 producing CO2 & H2O:
September 25, 2013

SAT prep math
Maria has two piggy banks. In one piggy bank she saves dimes and in the other she saves nickels. At the end of each month she saves 40 nickels and 30 dimes
September 18, 2013

Physical Science
a student is given a 10 gram sample of gold that has a density of 19.32g/cm3. The student is then given a 5 gram sample of an unknown substance and told the density of the unknown substance is 19.32g/cm3. What is the unknown substance
September 10, 2013

chemistry
determine the mass of CO2 produced when 51.2 g of CaO is reacted with 50.0 g of C according to the unbalanced equation CaO + C --------CaC2 =CO2
August 26, 2013

chemistry
in the reaction of magnesium metal with hydrochloric acid to produce magnesium chloride and hydrogen gas. If 4.59 mol of magnesium and 4.59 mol of hydrochloric acid are reacted, how many moles of magnesium chloride are produced ?
August 26, 2013

Please Help with calculus
How to evaluate x=0 and dx=-.03? I got(1/9)e^(x/9)dx as dy of e^(x/9)and I don't know how I should plug them in.
June 26, 2013

Calculus
Let y=e^(x/9). a) Find the differential dy. dy = b) Evaluate dy if x=0 and dx=−0.03. dy =
June 26, 2013

Calculus
Find the linear approximation L(x) of ln(x) at the point a = 12.
June 25, 2013

Calculus
Find the equation of the tangent line to the curve (piriform) y^2=x^3(4−x) at the point (2,16−−ã). a. Find dy/dx at x=2. dy/dx= b. Write the equation of the tangent line to the curve.
June 25, 2013

Calculus
Find the linear approximation L(x) of ln(x)at the point a = 12.
June 20, 2013

Calculus
The radius of a circular disk is given as 51 cm with a maximum error of 0.04 cm. Use differentials to estimate the maximum error and percent error in the calculated area of the disk.
June 19, 2013

english
please answer the last question
June 11, 2013

english
give two examples in the giant's house for character, theme, plot, style, point of view
June 11, 2013

chemistry
How much carbon dioxide gas is there in a 34.3 L container at 34.0◦C and 5.49 atm? answer in grams
June 9, 2013

Calculus
Evaluate the following limit, if it exists: lim h-->0 ((sqrt9+h)-3/(h)
May 31, 2013

Calc
Oscar Corporation is planning to construct an elliptical gate at its headquarters. The width of the ellipse will be 5 feet across and its maximum height along the center will be 3 feet. The company wants to place two bright spots at the foci of the ellipse. How far from the ...
May 1, 2013

math
kate cut a pizza into fourths. karl cut a pizza of the same size into sixth. After they each ate some pizza, they had the same fraction of pizzas left. What fraction of each pizza was left?
April 23, 2013

pre calc
Find all solutions of the equation tan^5 x - 9tan x =0. The answer is Ak\pi where k is any integer, the constant A= ??.
April 14, 2013

math
Find all solutions of the equation 3sin^2 x -7sin x +2 = 0 in the interval [0,2\pi). The answer is x_1= ? and x_2= ? with x_1<x_2.
April 14, 2013

since and cosine please help me!
that is not right according the program
April 14, 2013

since and cosine please help me!
Simplify and write the trigonometric expression in terms of sine and cosine: ((2+tan^2 x)(sec^2 x))-1 = (f(x))^2 f(x)= ???
April 14, 2013

sine and cosine
Simplify and write the trigonometric expression in terms of sine and cosine: sin x + (cot x)(cos x) = (1/f(x)) f(x)= ?
April 14, 2013

cosine and sine HELP!
Simplify and write the trigonometric expression in terms of sine and cosine: ((2+tan^2 x)(sec^2 x))-1 = (f(x))^2 f(x)= ???
April 14, 2013

math
Simplify and write the trigonometric expression in terms of sine and cosine: sin x + (cot x)(cos x) = (1/f(x)) f(x)= ?
April 14, 2013

chemistry
Thimerosal is an organic compound (gram molecular mass = 404.8 g/mol) used to inhibit bacterial growth. A .100%solution of thimerosal is sometimes used as an antiseptic. Assume that this solution has a density of 1.00 g/mL. A. how many grams of thimerosal are found in .500 g ...
April 7, 2013

math
Simplify and write the trigonometric expression in terms of sine and cosine: sin x +(cot x)(cos x) = 1/f(x) f(x)= ?
April 7, 2013

math
If tan^2(t) - sin^2(t) = sin^a(t)\cos^b(t), then the positive power a = the positive power b =
April 7, 2013

math
2a2+5a-25=0
April 4, 2013

phisics
If You do 100 j of work to elevate a bucket of water,what is its gravitational potential energy relative to its starting position?
March 14, 2013

angles
A survey team is trying to estimate the height of a mountain above a level plain. From one point on the plain, they observe that the angle of elevation to the top of the mountain is 25 degrees. From a point 1225 feet closer to the mountain along the plain, they find that the ...
March 10, 2013

trig
The radian measure of an angle of 182 degrees is ?
March 6, 2013

math
The radian measure of an angle of 182 degrees is
March 5, 2013

Pre calulus only 15 min left HELP!
((ln(x))^1/2)/(ln(x^1/2))=6 solve for x
March 3, 2013

Physics
500 calories of heat is added to 2.0 g of water at 80 degrees Celsius. How much steam is produced?
March 3, 2013

math
write the metric unit of length that is reasonable. a door is about 1 blank wide
February 25, 2013

Math
The sum of twice a number and another number is 24. The difference of twice the first number and the other number is 12. Which system would model this situation, and what is the solution?
February 22, 2013

math
what is answer of 7 cubed
February 19, 2013

math
A certain brand of cereal costs $3.25 per box before sales tax is added. When you buy 5 or more boxes of this cereal you receive 1 additional box for free. What is the average cost per box of cereal for 6 boxes before sales tax are added ? Please helpp
February 5, 2013

English
What is the significance of the repetition of the word absurd in the play?
January 22, 2013

math
jeff bought 6 pairs of shoes and 4 jerseys for 560. Jersies cost 1/4 price of one pair of shoes. Find price of shoes and price of jersey
January 15, 2013

Chemistry
1. Pentane gas (C5H12) combusts with oxygen gas (O2) to form water (H2O) and carbon dioxide (CO2). Write a balanced chemical equation for this reaction and explain the scientific principle (statement) that requires the balancing of an equation to make it conform to reality
January 15, 2013

math
A group of 132 students chose baseball and soccer as their favorite sports in the ratio of 3:8. How many students chose soccer as their favorite sport?
January 14, 2013

physics
a mechanic uses a chain and bloc pulley to lift a 875-kg engine 4.0 m to the top of the garage. the downward force on the chain over the 4.0 m distance is 5.0 x 10^4 N. a)calculate the work done in raseing the motor b)how much useful work was done c)what is the inefficiency of...
January 12, 2013

science
When scientists use one of their five senses to gather information, they are?
January 8, 2013

math
sam cut a pie into equal slices. there are only 3 slices left. the angle measures for the three slices is 72 degrees. how many slices did sam cut the pie into?
January 7, 2013

math
At a festival, 2/7 of the number of girls was equal to 3/5 of the number of boys. There were 165 fewer boys than girls. How many children were at the festival in all?
January 1, 2013

math
Madison spent 5/8 of her savings on a microwave oven & a refrigerator. She used 4/7 of the amount she spent to buy the refrigerator. The refrigerator cost $280 more than the microwave oven. How much savings did Madison start with?
January 1, 2013

Science
Nevermind, I was looking and I just found the help I needed :)
December 17, 2012

Science
If you are asked to determine an object’s speed, what information must you have? A.distance and period of time B.distance and change in position C.period of time and direction D.distance and direction
December 17, 2012

physics
220
December 7, 2012

Phusics
Does an object moving in the y direction have KE? If so if you apply a force in the Y direction will the velocity increase?
December 2, 2012

physics
You have a conversation of EP and with that you have the formula: Mbull*Vi+Mwood*Vi=(Mb+Mw)Vf .o15kg*Vi+15*0=(.015+15)Vf Mult. by 0: .015kg*Vi=(.o15+15)Vf So we can't solve that (i guess we cant curse here) but we move on to where the spring compresses, there is ...
December 2, 2012

physics
You have a conversation of EP and with that you have the formula: Mbull*Vi+Mwood*Vi=(Mb+Mw)Vf .o15kg*Vi+15*0=(.015+15)Vf Mult. by 0: .015kg*Vi=(.o15+15)Vf So we can't solve that but we move on to where the spring compresses, there is conservation of TME so: 1/2(Mb+Mw)Vf^2...
December 2, 2012

English
Out side
November 29, 2012

quantitative analysis
consider a manufacture whose total cost of producing x items is given by c(x) = 10000 + 5x+1/9x^2 a) what is the average cost function of A(x) = c(x)/x? b)how many items should the manufacturer produce in order to minimize average cost? c)what is the smallest average cost? d) ...
November 27, 2012

Stats PLEASE HELP!!!
Webcredible, a UK-based consulting firm specializ- ing in websites, intranets, mobile devices, and applications, conducted a survey of 1,132 mobile phone users between February and April 2009. The survey found that 52% of mo- bile phone users are now using the mobile Internet...
November 18, 2012

4th grade math
38700
November 15, 2012

Social Studies
True
November 12, 2012

Physics
What is one way in which the magnetic field is similar to the electric field and one way in which the magnetic field is different from the electric field?
November 7, 2012

Chem Lab Help
Carefully clean and dry a 150 mL beaker, a 250 mL beaker, and a large 155mm test tube. Remove two Alka-Seltzer tablet from their hermetically sealed packet and weight them. Use a clean (use paper towels only, NO water) mortar and pestle to grind the tablets into a fine power. ...
October 29, 2012

Chem Lab Help
Trial #1 Trial #2 Trial #3 Mass: gelatin capsule (g) .123 .118 .122 Mass: whole alka-seltzer tablet (g) 3.230 3.230 3.230 Mass: capsule + alka-seltzer sample (g) .822 .882 .677 Mass: system before reaction (g) 23.109 23.110 22.735 Mass system after reaction (g) 21.742 21.813 ...
October 29, 2012

CHEMISTRY
Describe how you would prepare 250. mL of a .500 stock solution of sodium hydroxide. (show all work)
October 28, 2012

Chemistry Lab
Im not sure how to do these questions though
October 28, 2012

Chemistry Lab
The experimental data you entered is: Trial #1 Trial #2 Trial #3 Mass: gelatin capsule (g) .123 .118 .122 Mass: whole alka-seltzer tablet (g) 3.230 3.230 3.230 Mass: capsule + alka-seltzer sample (g) .822 .882 .677 Mass: system before reaction (g) 23.109 23.110 22.735 Mass ...
October 28, 2012

Physics
A photocell shows photoelectric effect when green light shines on it. Which of the following is correct if a green light is replaced by a blue light? Electron emission would get stopped. Electrons are emitted with more velocity. Electrons are emitted with less velocity. ...
October 25, 2012

math
how to solve identity property,2nd grade
October 24, 2012

Physics
A photocell shows photoelectric effect when green light shines on it. Which of the following is correct if a green light is replaced by a blue light? Electron emission would get stopped. Electrons are emitted with more velocity. Electrons are emitted with less velocity. ...
October 24, 2012

Physics
A photocell shows photoelectric effect when green light shines on it. Which of the following is correct if a green light is replaced by a blue light? Electron emission would get stopped. Electrons are emitted with more velocity. Electrons are emitted with less velocity. ...
October 23, 2012

math
Beth cuts her pizza into thirds, how many pieces did she eat?
October 18, 2012

Math
How many 2/3 are in 3/4?
October 15, 2012

Algebra
A scuba diver dives 100 feet below the waters surface. Later she rises 78 feet. How far below the surface is the diver?
October 13, 2012

Algebra 1
Ruffles cost $3.49 per bag. Chips-Ahoy cost $3.99 per bag. Bobby spent 42.39. If he bought 5 more bags of Chip-Ahoy than Ruffles, how many bags of each snack did he buy?
October 11, 2012

Physics
Its postive you dummy
October 11, 2012

Math
5x6=5x4+5xb
September 27, 2012

7th grade Art
1.B 2. C 3 A C
September 26, 2012

physics
1) A boy sledding down a hill accelerates at 1.40 m/s, If he started at rest, in what distance would he reach a speed of 7.00 m/s? 2) An Elevator is moving upward at 1.20 m/s when it experiences an accelerstion of 0.31 m/s downward, over a distance of 0.75m. What will its ...
September 24, 2012

chemistry
how many grams of NaOH should be used to make 200 mL of a 0.24M solution starting with a .4M HCL solution
September 22, 2012

chemistry
Assuming that 0.5 grams of a 1.0 gram sample is CaCO3, what should the concentration of HCl(M) be if you want to use 25.0 mL for the titration?
September 22, 2012

Physics
Thinking Physic-ly: On some toll roads, the ticket is stamped with the time you enter the toll road and the time you exit. How can the toll taker determine if you were speeding?
September 19, 2012

science
what is the volume of a cabinet 1.20m by 5m by 75cm
September 18, 2012

Calculus
can you solve it by using separation of differential equations
September 9, 2012

Calculus
A snowball has a radius of 3 inches. Assume the rate with which the volume of the snowball melts is proportional to its surface area. If, after 1 hour, the radius of the snowball is 2.9 inches, predict what the radius will be after one day. using separation of ordinary ...
September 9, 2012

calculus
can you solve it with separation of differential equation
September 9, 2012

Economics
possibly
September 7, 2012

math
A rectangular slab of concrete is cut from a large block. The slab measures 10.4 inches thick, 1.8 feet long, and 0.0021 miles wide. Find its volume in cubic feet.
September 6, 2012

finite math
Okay,so: Assume that there are 8 unfilled roles: 3 male and 5 female. There are 5 men and 6 women, including Sally, auditioning for a part in the play. How many of these casts include Sally?
September 5, 2012

social studies
Is there 51 states? Is DC considered as 5lst or Puerto Rico 51st
September 3, 2012

  1. Pages:
  2. <<Prev
  3. 1
  4. 2
  5. 3
  6. 4
  7. 5
  8. 6
  9. 7
  10. 8
  11. Next>>

Members