Sunday
November 23, 2014

Posts by James


Total # Posts: 1,871

physics help
A 1210 N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A W = 1820 N crate hangs from the far end of the beam. The angle between the beam and the horizontal is 30 degrees upwards and the angle between the horizontal and the...
November 27, 2010

physics help
A 1210 N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A W = 1820 N crate hangs from the far end of the beam. The angle between the beam and the horizontal is 30 degrees upwards and the angle between the horizontal and the...
November 27, 2010

Molecular Biology
You are working in a lab that has recently discovered a new viral protein. Describe in detail how you could generate a polyclonal antibody preparation against this protein. Include a full description of production and purification. Describe in detail an experiment that could ...
November 26, 2010

Math
Solve the equation: 2^x^2-4x = (1/16)^x-4
November 25, 2010

physiology
if the value of ion concentration divided by atomic weight is equal for na+ and ca2+, which will have the higher osmolality?
November 24, 2010

American Democracy
Acts of Congress.
November 23, 2010

Physics
A ferryboat traveling at a speed of 30 km/h attempts to cross a river with a current of 5 km/h. What is the boat's speed relative to the shore? A.8 km/h B.25 km/h C.30.4 km/h D.32.8 km/h
November 23, 2010

Geometry
Hi, I need some help with SIN COS TAN
November 22, 2010

Math
in 6-6÷6×6+6=0 where would the parenthesis go
November 22, 2010

chemistry
A 0.446 g- sample of an unknown monoprotic acid was titrated with 0.105 M KOH. the molar mass is 120 g/mol What is the pKa value?
November 22, 2010

math
Three rectangles have exactly the same area. The dimensions of each rectangle (as length and width) are a and b; a – 3 and b + 2; and a + 3 and b – 1. Find the area of the rectangles.
November 17, 2010

math
A painter leans a ladder against a vertical wall. The top of the ladder is 7 meters above the ground. When the bottom of the ladder is moved 1 meter farther away from the wall, the top of the ladder is 5 meters above the ground. What is the length of the ladder? Round to the ...
November 17, 2010

calculus
Find all relative extrema and points of inflection of the function: f(x) = sin (x/2) 0 =< x =< 4pi =< is supposed to be less than or equal to. I can find the extrema, but the points of inflection has me stumped. The inflection point is (2pi,0) but shouldn't there ...
November 14, 2010

10th grade
If m<pqs=3x+13and m<sqt=6x-2,
November 13, 2010

electrical
does anyone have the exam answers to exam 00603300
November 11, 2010

electrical
penn foster exam 00603300
November 11, 2010

Accounting
Complete exercises 2-1 and 2-2 on pp. 95-98 of Computer Accounting with Peachtree Complete® 2010 using Peachtree.
November 11, 2010

College Chemistry
Entropy will be greater than 0 right, since there is more disorder in the gaseous state? What about the Enthalpy?
November 9, 2010

College Chemistry
Predict the signs of delta H (Enthalpy) and delta S (Entropy) for the evaporation of water at 85 C.
November 9, 2010

physics
Two children seat themselves on a seesaw, the one on the left has a weight of 400N whlie the one on the right weighs 300N. The fulcrum is at the midpoint of the seesaw, if the child on the left is not at the end but is 1.5m from the fulcrum, and the seesaw is balanced, what is...
November 9, 2010

public administration
i dont know where to begin to answer these questions and this is something we have not gone over in class yet!
November 7, 2010

public administration
Assume that after all the rhetoric and great debates on health care reform that Congress decided the rate regulation that has been used for a century to control the prices and services of common carriers in transportation is an appropriate model. It therefore established the &...
November 7, 2010

college
creating a slide on debunking gender misconception any tips
November 4, 2010

physics
A person is riding a bicycle, and its wheels have an angular velocity of +15.5 rad/s. Then, the brakes are applied and the bike is brought to a uniform stop. During braking, the angular displacement of each wheel is +15.5 revolutions. (a) How much time does it take for the ...
November 3, 2010

math
The earth has a radius of 6,380 km. The formula for the volume of a sphere is �� V = 4/3 ðx^3, and the formula for surface area of a sphere is A = 4ðx^2 . Find the volume and surface area of the earth and write the answer in scientific notation with two ...
November 3, 2010

chemistry
How many mL of 0.25 M H2SO4 can be made from 50.0mL of 0.50 M H2SO4? Also in this case, what does the capital M stand fro?
November 2, 2010

science
if a thermometer contained a gram of mercury, how much would the volume of the mercury change when the temperature rose from 0 degrees celcius to 30 degrees celcius?
November 1, 2010

chem 30
Do you have a textbook?
November 1, 2010

chemistry
The solubility of barium nitrate at 100°C is 34 g/100 g of H2O and at 0°C is 5.0 g/100g of H2O. If you start with 100 g of Ba(NO3)2 and make a saturated solution in water at 100°C, how much water is required? If the saturated solution is cooled to 0°C, how much...
October 29, 2010

Ecology
4. c 5. a 6. c 7. b 8. a 9. b 10.c
October 29, 2010

physics
A vector is 100 units long and makes an angle of 50 degrees with the positive x-axis. find the x and y components of this vector.
October 28, 2010

project management
i have to write a 50-100 word summary for a final project proposal being the project manager.any ideas what kind of projects i can use?
October 26, 2010

Physics
A 1030 kg car is pulling a 360 kg trailer. Together, the car and trailer have an acceleration of 2.07 m/s2 directly forward. How do you find net force on the car and trailer?
October 23, 2010

IT
Service Request SR-kf-013 5 page section of the paper. This should include: o Testing Process Summary: Define a test plan or script that identifies major software functionality and hardware to be tested along with the required outcomes. o Installation Process and Training Plan...
October 22, 2010

IT
Service Request SR-kf-013
October 22, 2010

College Chemistry
"A student weighs 0.347 g of KHP on a laboratory balance. The KHP was titrated with NaOH and the concentration of the NaOH determined to be 0.110 M. For the second titration, the student correctly diluted 6 M HCl from the reagent shelf using a graduated cylinder to obtain...
October 20, 2010

Chemistry
The Question Is: "A student weighs 0.347 g of KHP on a laboratory balance. The KHP was titrated with NaOH and the concentration of the NaOH determined to be 0.110 M. For the second titration, the student correctly diluted 6 M HCl from the reagent shelf using a graduated ...
October 20, 2010

College Chemistry
Can anyone give me an update on this?
October 19, 2010

College Chemistry
Anyone know if my answer is correct?
October 19, 2010

College Chemistry
The Question Is: "A student weighs 0.347 g of KHP on a laboratory balance. The KHP was titrated with NaOH and the concentration of the NaOH determined to be 0.110 M. For the second titration, the student correctly diluted 6 M HCl from the reagent shelf using a graduated ...
October 19, 2010

College Chemistry
Would i divide the M and then multiply by Ka?
October 19, 2010

College Chemistry
"What is the pH of a solution that is 0.50 M in sodium acetate and 0.75 M in acetic acid? (Ka for acetic acid is 1.85 x 10-5)." Would i use the Ka expression formula??
October 19, 2010

math
A(-3,-2) B(8,4)are the ends of the diameter of a circle. the tangent of the circle at point B is -11x+6y+64=0 the line L passes through A and the origin. line L has a gradient of 2/3 what is the coordinates that the line L and tangent at point B cross?? (this question had 4 ...
October 18, 2010

math
A(-3,-2) B(8,4)are the ends of the diameter of a circle. the tangent of the circle at point B is -11x+6y+64=0 the line L passes through A and the origin. line L has a gradient of 2/3 what is the coordinates that the line L and tangent at point B cross?? (this question had 4 ...
October 18, 2010

math
A(-3,-2) B(8,4)are the ends of the diameter of a circle. the tangent of the circle at point B is -11x+6y+64=0 the line L passes through A and the origin. line L has a gradient of 2/3 what is the coordinates that the line L and tangent at point B cross?? (this question had 4 ...
October 18, 2010

math
A(-3,-2) B(8,4)are the ends of the diameter of a circle. the tangent of the circle at point B is -11x+6y+64=0 the line L passes through A and the origin. line L has a gradient of 2/3 what is the coordinates that the line L and tangent at point B cross?? (this question had 4 ...
October 18, 2010

math
A(-3,-2) B(8,4)are the ends of the diameter of a circle. the tangent of the circle at point B is -11x+6y+64=0 the line L passes through A and the origin. line L has a gradient of 2/3 what is the coordinates that the line L and tangent at point B cross?? (this question had 4 ...
October 18, 2010

math
A(-3,-2) B(8,4)are the ends of the diameter of a circle. the tangent of the circle at point B is -11x+6y+64=0 the line L passes through A and the origin. line L has a gradient of 2/3 what is the coordinates that the line L and tangent at point B cross?? (this question had 4 ...
October 18, 2010

math
A(-3,-2) B(8,4)are the ends of the diameter of a circle. the tangent of the circle at point B is -11x+6y+64=0 the line L passes through A and the origin. line L has a gradient of 2/3 what is the coordinates that the line L and tangent at point B cross?? (this question had 4 ...
October 18, 2010

math
A(-3,-2) B(8,4)are the ends of the diameter of a circle. the tangent of the circle at point B is -11x+6y+64=0 the line L passes through A and the origin. line L has a gradient of 2/3 what is the coordinates that the line L and tangent at point B cross?? (this question had 4 ...
October 18, 2010

HEALTH-P.E.
HOW CAN A FITNESS LEVEL AFFECT A TWELVE YEAR OLD BOY PHSICALLY, EMOTIONALLY, FINANCIALLY, AND SOCIALLY?
October 13, 2010

math
The Mayan Empire, which ruled Central America for centuries, had two calendars. One calendar was the same as ours, 365 days long (without leap year). The other calendar was 270 days long, the length of a woman's pregnancy. If both start on day one at the same time, then ...
October 13, 2010

health fitness
how does my fitness lever affect me physically, emotionally, financially, and socially?
October 12, 2010

physics
A 155 N box is placed on an inclined plane that makes a 30.0° angle with the horizontal. Find the component of the weight force parallel to the plane's surface.
October 12, 2010

5th grade math
949864
October 11, 2010

health
how does socioeconomics and educational opportunity are main reason for health disparities?
October 11, 2010

physics
A 0.80-kg ball, attached to the end of a horizontal cord, is rotated in a circle of radius 1.7 m on a frictionless horizontal surface.If the cord will break when the tension in it exceeds 90 N, what is the maximum speed the ball can have? Express your answer using two ...
October 11, 2010

COM 156
Help with writing an outline on renting vs buying
October 11, 2010

statistics
what is the level of measurement for the following question? 1) the SAT scores for the GEORGE W BUSH white house staff. is it nominal, interval, ordinal, or ratio? Why?
October 10, 2010

statistics
what is the level of measurement for the following question? 1) the SAT scores for the GEORGE W BUSH white house staff. It is nominal, interval, ordinal, or rational? Why?
October 10, 2010

Physical science
what is refraction?
October 9, 2010

US History
How did the federalists and the Jeffersonian republicans differ in their opinion of how the constitution should be interpreted? if a link to a page i can read is provided i'd be extremely grateful otherwise just answer is somewhat fine
October 7, 2010

Social Studies
I know for sure that #1 is A. Churches and #5 is C. 35% (or one third of Americans). Rest, I'm not so sure on.
October 7, 2010

algebra
m=-3 passing through p(3.5)
October 6, 2010

3rd grade
using four different digits, what is the least sum you can get when you add two digit numbers?
October 5, 2010

Math
the first one is 8 inside the path #'s 10-2= and 6+2=8
October 5, 2010

accounting
The two cases described below are independent of each other. Each case provides the information necessary to prepare the stockholders' equity section of a corporate balance sheet. a. Early in 2007, Wesson Corporation was formed with the issuance of 50,000 shares of ...
October 3, 2010

algebra
what do i do
September 30, 2010

Math
how many people can receive equal $16 shares from a total of $496
September 30, 2010

algebra
evaluate the exprression 90/x for the given values of x to complete the table x 2 3 5 9 15 18 20
September 28, 2010

english
Mood and tone! can someone kindly and effectively explain the difference.I am lost completely.Help!
September 24, 2010

Algebra
I can't figure out the answer to question: When you subtract -2c+3d from 5c-7d
September 24, 2010

history
what factors most influenced colonial development
September 23, 2010

math
-3.38+r-9.76 Solve, I think the answer is 2/8.
September 22, 2010

math
how do you solve this equation.
September 22, 2010

math
s+5/8=7/8
September 22, 2010

math
s+5/8=7/8
September 22, 2010

math
Using the following six digits, 1, 2, 4, 6, 8, and 9, fill in the blanks below to make the maximum product that you can. Use each digit only once. How does an understanding of place value help determine the best solution to this problem? __ __ __ x __ __ __
September 22, 2010

Math
Using the definition for the Fourier transform, prove that this operation is linear.
September 22, 2010

PHYSICS
Taylor Swift leaves Philadelphia for a concert in Dallas. Kellie Pickler leaves at the same time, but in a different tour bus. After 2 hours, Taylor's bus has traveled 50% further than Kellie's bus. If Taylor's bus is going 30mph faster than kellies's bus, how ...
September 21, 2010

Aberdeen
A model rocket is launched straight upward with an initial speed of 40.0 m/s. It accelerates with a constant upward acceleration of 2.50 m/s2 until its engines stop at an altitude of 120 m.
September 20, 2010

ALGEBRA...[HELPP!!]
Arianna kicks a soccer ball off the ground and in the air with an initial velocity of 42 feet per second. Approximately what maximum height does the soccer ball reach?
September 16, 2010

accounting 101
Preparing A Journal Entry. I need help telling whether it's accounts receivable, rent expense, etc. Also determining whether it's debit or credit. I understand everything else like the T-account and Trial Balance, just determining what they are is what I'm having ...
September 16, 2010

Chemistry
Yes in fact it is. So does that mean that the time it takes for the concentration to decrease to 0.180 mol/l would just be k then since its a zero order?
September 14, 2010

Chemistry
The rate law of a reaction, A-> B+C is given by the expression: Rate=k, where k=0.0113 mol/L min. If the initial concentration of the reactant is 0.225 mol/L, how long does it take for the concentration to decrease to 0.180 mol/L? I know i have to find the order of the ...
September 14, 2010

calculus
Find the limit L. Then find delta > 0 such that |f(x) - L| < 0.01 whenever 0 < |x-c| < delta. lim x -> 4 (4- (x/2))
September 14, 2010

algebra 1b
Arianna kicks a soccer ball off the ground and in the air with an initial velocity of 42 feet per second. Approximately what maximum height does the soccer ball reach?
September 14, 2010

College Chemistry
Help Please.
September 14, 2010

College Chemistry
This is based on the Collision theory.
September 14, 2010

College Chemistry
Which of the following changes generally lead to greater reaction rates? (I)Increasing the temperature (II)Decreasing the concentration of a reactant or (III) adding a catalyst I know that change in temperature influences the reaction, in this case it speeds up and that adding...
September 14, 2010

algebra
In 1995, the life expectancy of males in a certain country was 70.1 years. In 1999, it was 73.6 years. Let E represent the number of years since 1995. The linear function E(t) that fits the data is E(t) =_____ t +______.(Round to the nearest tenth) Use the function to predict ...
September 14, 2010

chemistry
30.2 g
September 11, 2010

chemistry
How many grams of na3po4 will be needed to produce 425ml of a solution that has a concentration of na+ ions of 1.30 M?
September 11, 2010

math
5x=-15
September 11, 2010

scientist
Scientists performed an experiment to determine whether there is a connection between learning ability and food. They took two groups of 20 mice each, all from the same purebred strain. The mice were deprived of food for 3 days and then given a standard learning session in ...
September 10, 2010

Chemistry
(3.9)*(0.9025J)*(Tfinal-99.3)+(10)*(4.184J)*(Tfinal-22.6)=0 (3.51975J)*(Tfinal-99.3)+(41.84J)*(Tfinal-22.6)=0 45.35975JTfinal-1295.095175=0 1295.095175/45.35975=28.6 degrees celsius
September 10, 2010

math
Saturn is 6 times further from the Sun than Mars. Define a variable and write and expression for the distance of Saturn from the Sun. Not the same person
September 8, 2010

Physics (Oscillation)
If a particle moves in simple harmonic motion with a frequency of 3.00 Hz and an amplitude of 5.00 cm through what total distance does the particle move during one cycle of its motion, what is its maximum speed, where does this maximum speed occur and what and where does the ...
September 8, 2010

com155
So how did you do on this? I have the same assignemnt but I have come up with different answers than yours. How did you do?
September 8, 2010

Chemistry
Thanks I just figured it out too. I appreciate your help.
September 7, 2010

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