Thursday

October 2, 2014

October 2, 2014

Total # Posts: 515

**chemistry **

Potential of a cell is 0.1776 volts Pb|Pb2+(??M)||Pb2+(1.0M)|Pb I know i have to use Nernst's equation .. i just have no clue how to attempt this :S
*March 29, 2011*

**Chemistry **

so if it doesn't react.. is it colorless? because hexane is colorless.. ?
*March 29, 2011*

**Physics**

An infinite thread of charge density lamda lies along Z axis. The potential difference between the points A(4,3,4) and B (3,4,0)is?
*March 21, 2011*

**Physics**

Two men decide to use their cars to pull a truck stuck in mud. They attach ropes and one pulls with a force of 972 N at an angle of 28 degrees with respect to the direction in which the truck is headed, while the other car pulls with a force of 1401 N at an angle of 23 degrees...
*March 17, 2011*

**physics - energy**

a 60 kg person walks from the ground to the roof of a 74.8 m tall building. How much gravitational potential energy does she have at the top of the building?
*March 5, 2011*

**physics - energy**

a 70kg man is walking at a speed of 2.0 m/s. what is his kinetic energy?
*March 5, 2011*

**Algebra**

If I buy 2 apples and 6 oranges, I will spend $5.60. However, if I buy 6 apples and 2 oranges, I will spend $4.80. How much does one orange cost? Write the answer like this example: 48cents.
*March 3, 2011*

**Chemistry**

Calculate the pH of (1)0.150M KC2H3O2: (2)0.200M pyridine chloride, C5H5NHCl: and(3) 0.500M NaCl
*February 21, 2011*

**Chemistry**

Calculate the pH of (1)0.150M KC2H3O2: (2)0.200M pyridine chloride, C5H5NHCl: and(3) 0.500M NaCl
*February 21, 2011*

**seed**

what is the simple & complete subject in the following sentence. Heart- shaped cards are exchanged in modern times.
*February 20, 2011*

**University Physics**

Determine an equation for the total force needed to drag a box at constant speed across a surface with coefficient of kinetic friction uk when the force is applied at an angle theta.
*February 12, 2011*

**math**

what would a data set with 10 numbers with a range of 85 a mean of 50 and a median of 40 look like
*February 8, 2011*

**Algebra**

Graph the two equations to solve the system. Write the ordered pair solution like this (1,2) with no spaces, or write no solution or infinitely many solutions. 1/2 x - 2y = 4 and 4y - x = -8
*January 30, 2011*

**Algebra**

Graph the two equations to solve the system. Write the ordered pair solution like this (1,2) with no spaces, or write no solution or infinitely many solutions. x + y = 6 and x - y = 4
*January 30, 2011*

**math**

What is the greatest amount of money you could leave for a tip if... 1.no paper money is left 2.with the coins tat are left, change cannot be ;made for a quarter or for a dollar.
*January 25, 2011*

**algebra**

-x/4 <= 7
*January 23, 2011*

**algebra**

The sum of two consecutive integers is between 5 and 9. What are the two integers? Tell the two numbers only
*January 23, 2011*

**algebra**

Solve the inequality, -3x - 2 < 5. Write the solution as an inequality with no spaces. You may leave the fraction in improper form.
*January 23, 2011*

**algebra**

Which of the following is a solution of the compound inequality? 3x + 8 < 2 or x + 12 > 2 - x
*January 23, 2011*

**algebra**

Solve |2x -5| > 7
*January 23, 2011*

**algebra**

Find all sets of two consecutive positive odd integers whose sum is less than or equal to 18.
*January 23, 2011*

**algebra**

Find all sets of two consecutive positive odd integers whose sum is less than or equal to 18.
*January 23, 2011*

**Chem- Dr Bob**

NO(g) + CO2(g)<-->NO2(g) + CO(g) delta H^degree sign = -100kJ Which of the following will favor the forward reaction? Why? A) add NO B) remove NO2 C) decrease the volume of the container D) raise the temperature E) add CO Not sure why the last posting didn't show up ...
*January 23, 2011*

**Chemistry**

NO(g) + CO2(g) <¡X> NO2(g) + CO (g) ƒ´H¢X = ¡V100 kJ Which of the following will favor the forward reaction?Why? A) add NO B) remove NO2 C) decrease the volume of the container D) raise the temperature E) add CO
*January 22, 2011*

**algebra**

Solve |x + 5| < 9
*January 19, 2011*

**algebra**

how do u do 1.25 multiplied by 64
*January 19, 2011*

**algebra**

show mw how to do 1.25 of 64
*January 19, 2011*

**algebra**

Cat Years 1 3 4 6 7 Human Years 13 33 43 63 73 What is the meaning of the slope? Write the slope-intercept form of the equation for the line of fit. Use linear interpolation and your line of fit to estimate the number of human years which will correspond to 5 cat years
*January 17, 2011*

**Algebra**

3(x - 2) > 4(2x + 11)
*January 12, 2011*

**Algebra**

What is 4x + 2y = -20 written in slope-intercept form?
*January 7, 2011*

**Algebra**

Skylark joined a karate class. She paid $30 to join plus $25 per lesson. What is the rate in this problem? Question 14 answers total cost original payment of $30 $25 per lesson
*January 7, 2011*

**Algebra**

Write the range for the equation with the domain given. Write in set brackets with commas between numbers and no spaces. 5x - 3y = 6 ; Domain {-3, 0, 6}
*January 7, 2011*

**Algebra**

Write the equation y - 4 = -2(x - 5) in slope-intercept form.
*January 6, 2011*

**7th grade math**

1.25 of 64
*January 6, 2011*

**Algebra**

Write the equation y - 2 = 4(x + 5) in standard form
*January 5, 2011*

**Algebra**

Write the slope-intercept form of the equation of the line parallel to y = 5x + 2 which passes through the point (4, 9)
*January 5, 2011*

**Algebra**

Write the slope-intercept equation for the line through (3, 7) and (9, 3)
*January 5, 2011*

**Algebra**

Write the point-slope equation of the line through (-2, 1) with a slope of 3
*January 5, 2011*

**Algebra**

Write the slope-intercept form of the line which passes through (4, 2) with a slope of 1/2
*January 5, 2011*

**Algebra**

If y = 45 when x = 9, find the direct variation equation that relates y and x
*January 5, 2011*

**Algebra**

Write an equation in slope-intercept form of the line with an x-intercept of 6 and a y-intercept of 5.
*January 5, 2011*

**Algebra**

Write an equation of the line that passes through (8, 3) and (4, 3).
*January 5, 2011*

**Algebra**

Write an equation in slope intercept form of the line that passes through (4, 1) and (5, -1).
*January 5, 2011*

**Algebra**

Write an equation in slope-intercept form of the line with an x-intercept of 6 and a y-intercept of 5.
*January 5, 2011*

**Algebra**

Write an equation of the line that passes through (8, 3) and (4, 3).
*January 5, 2011*

**Algebra**

Write an equation in slope intercept form of the line that passes through (4, 1) and (5, -1).
*January 5, 2011*

**Algebra**

Write a direct variation equation that relates x to y. Then solve. Show both the equation and the solution. If y = 8 when x = 4, find y when x = 5.
*January 5, 2011*

**Algebra**

Write a formula for this sequence. Type it with no spaces. 19, 11, 3, -5,...
*January 5, 2011*

**Algebra**

Write a formula for this sequence. Type it with no spaces. 50, 83, 116, 149,...
*January 5, 2011*

**Algebra**

50, 83, 116, 149
*January 5, 2011*

**Algebra**

Predict the next two numbers in this sequence. Leave a comma but no spaces between the numbers. 1/4, 1/9, 1/16, 1/25,...
*January 5, 2011*

**Criminal justice**

What new initiatives are under way through the American Society for Industrial Security International?
*January 4, 2011*

**Criminal justice**

What new initiatives are under way through the American Society for Industrial Security International?
*January 4, 2011*

**algebra**

What do you notice about the ordered pairs?
*January 4, 2011*

**algebra**

If you only had the graph of a relation on a piece of grid paper, how could you graph the inverse without listing the ordered pairs?
*January 4, 2011*

**algebra**

Draw a line on the fold. List five ordered pairs on the fold
*January 4, 2011*

**algebra**

5/12=10/x-1
*January 4, 2011*

**algebra**

A block of ice loses one third of its weight every hour. After 2 hours, the block weighs 40 pounds. How much did the block weigh to begin with?
*January 4, 2011*

**algebra**

Chanina bought a pair of jeans which originally cost $88 at a 25% discount. How much was marked off the original price?
*January 4, 2011*

**algebra**

|3n + 5| = 7
*January 4, 2011*

**algebra**

Let h(x) = 2x + 7. Find the value of h(x) + 14
*January 2, 2011*

**algebra**

Let f(x) = 9x - 4.5. Find the value of f(2).
*January 2, 2011*

**algebra**

Find the value of x so that the line passing through the points will have the given slope: (x, 6) and (10, -3) with a slope of -3/2. Type only the number in the blank
*January 2, 2011*

**algebra**

2a = 3a + 4c for a
*January 2, 2011*

**algebra**

2a = 3a + 4c for a
*January 2, 2011*

**algebra**

2x + y = 9 for y
*January 2, 2011*

**algebra**

3x + y = 6
*January 2, 2011*

**algebra**

Two cars are driving toward each other from opposite directions. If one is driving 55 mph, the other is driving 60 mph and the cars are 500 miles apart, how long will it be before they pass each other? Round to the nearest tenth of an hour
*January 2, 2011*

**algebra**

Last year, there were 120 seniors in Limon High School. This year there are 145. What is the percent of increase? Round to the nearest percent.
*January 2, 2011*

**algebra**

4(c - 3) = 4c + 8
*January 2, 2011*

**algebra**

3c+4=4c-17
*January 2, 2011*

**algebra**

-1/6m=22
*January 2, 2011*

**algebra**

Is the following always, sometimes or never true? X + 1 = X + 0
*January 2, 2011*

**social studies**

i need info on iran's nuclear program asap so can u tell me were to get it
*December 13, 2010*

**physics**

a motor turns 21.6 revolutions in 0.75 second. what is the angular speed of the motor in rpm? in radians per second?
*December 9, 2010*

**1st grade**

0+4 1+3 2+2 3+1 4+0
*December 6, 2010*

**college**

A train is heading due west from St. Louis. At noon, a plane flying horizontally due north at a fixed altitude of 4 miles passes directly over the train. When the train has traveled another mile, it is going 80 mph, and the plane has traveled another 5 miles and is going 500 ...
*December 6, 2010*

**Physics**

______1. Which of the following is NOT true about a stone dropped from the third floor of the high school building? A. It is a free-falling object. B. It accelerates at the rate of 9.8 m/s2. C. It decelerates at the rate of 9.8 m/s2. D. Its initial velocity is zero.
*November 29, 2010*

**math**

[w^1 / w^-3]^-4 = w3 ? is this correct?
*November 20, 2010*

**Math**

[w^1 / w^-3]^-4 = w3 ? is this correct?
*November 20, 2010*

**Math**

[w^1 / w^-3] = w3 ? is this correct?
*November 20, 2010*

**statistics**

A marketing research ﬁrm suspects that a particular product has higher name recognition among college graduates than among high school graduates. A sample from each population is selected, and each asked if they have heard of the product in question. A summary of the ...
*November 17, 2010*

**1st grade grammar**

Capaitalize. joe is cool.
*November 8, 2010*

**physics please help**

The drawing shows a collision between two pucks on an air-hockey table. Puck A has a mass of 0.030 kg and is moving along the x axis with a velocity of +5.5 m/s. It makes a collision with puck B, which has a mass of 0.055 kg and is initially at rest. The collision is not head-...
*November 7, 2010*

**physics please help**

A 5.00 kg ball (ball 1), moving to the right at a velocity of +4.00 m/s on a frictionless table, collides head-on with a stationary 7.60 kg ball (ball 2). Find the final velocities of the balls if the collision is as specified below. (a) elastic collision ball 1 ball 2 (b) ...
*November 7, 2010*

**physics**

What is the wavelength of a proton traveling at a speed of 6.87 km/s
*October 30, 2010*

**physics**

A satellite has a mass of 5950 kg and is in a circular orbit 3.80 10^5 m above the surface of a planet. The period of the orbit is two hours. The radius of the planet is 4.15 10^6 m. What is the true weight of the satellite when it is at rest on the planet's surface?
*October 28, 2010*

**physics**

A satellite has a mass of 5950 kg and is in a circular orbit 3.80 105 m above the surface of a planet. The period of the orbit is two hours. The radius of the planet is 4.15 106 m. What is the true weight of the satellite when it is at rest on the planet's surface
*October 28, 2010*

**physics**

A 280 N force is pulling an 80.0 kg refrigerator across a horizontal surface. The force acts at an angle of 18.0° above the surface. The coefficient of kinetic friction is 0.200, and the refrigerator moves a distance of 6.00 m. (a) Find the work done by the pulling force...
*October 28, 2010*

**physics**

A 47.0 g golf ball is driven from the tee with an initial speed of 60.0 m/s and rises to a height of 24.4 m. (a) Neglect air resistance and determine the kinetic energy of the ball at its highest point. (b) What is its speed when it is 7.0 m below its highest point?
*October 26, 2010*

**physics**

A 47.0 g golf ball is driven from the tee with an initial speed of 60.0 m/s and rises to a height of 24.4 m. (a) Neglect air resistance and determine the kinetic energy of the ball at its highest point. (b) What is its speed when it is 7.0 m below its highest point?
*October 26, 2010*

**physics**

A motorcycle (mass of cycle plus rider = 3.0 102 kg) is traveling at a steady speed of 20 m/s. The force of air resistance acting on the cycle and rider is 1.8 102 N. Find the power necessary to sustain this speed under the following conditions. (a) the road is level (b) the ...
*October 26, 2010*

**physics**

A projectile of mass 1.450 kg is shot straight up with an initial speed of 20.0 m/s. (a) How high would it go if there were no air friction? (b) If the projectile rises to a maximum height of only 13.9 m, determine the magnitude of the average force due to air resistance.
*October 26, 2010*

**Statistics and Probability**

All printed circuit boards (PCB) that are manufactured at a certain plant are inspected. An analysis of the company’s record shows that 22% of all PCBs are flawed in some way. Of those that are flawed, 84% are reparable but the rest must be discarded. If a newly produced ...
*October 25, 2010*

**Statistics/Probability**

in roulette, there are 18 red 18 black and 2 green slots ball rolled 25 times what is the prob that the ball does not fall into any green slots? how do you set this up? I did 1-.0536 and its wrong how to start? thanks so much!
*October 25, 2010*

**Statistics/Probability**

in roulette, there are 18 red 18 black and 2 green slots ball rolled 25 times what is the prob that the ball does not fall into any green slots? how do you set this up? I did 1-.0536 and its wrong how to start? thanks so much!
*October 25, 2010*

**physics 11**

A river has a current of 5 m/s. A boat tries to head directly across at 4 m/s. When the boat reaches the other side it is 30m downstream. How wide is the river ?
*October 19, 2010*

**math**

i dont know
*October 8, 2010*

**math**

where would the parentheses go in this problem 6*6+6*6-6=426
*October 8, 2010*

**math**

thanks gina!!!
*October 8, 2010*

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