Friday
September 19, 2014

Posts by Joe


Total # Posts: 2,073

math
A state fair had 1,019,887 people in attendance. The fair committee performed a survey. The question was, “What do fairgoers enjoy most about the fair?”&...
March 21, 2014

physics
A potter's wheel is rotating around a vertical axis through its center at a frequency of 1.8rev/s . The wheel can be considered a uniform disk of mass 4.7kg and diameter 0.34m . The potter then throws a 3.1kg chunk of clay, approximately shaped as a flat disk of radius ...
March 17, 2014

PHYSICS
A 0.380 kg pendulum bob passes through the lowest part of its path at a speed of 2.03 m/s. What is the tension in the pendulum cable at this point if the pendulum is 83.1 cm long? When the pendulum reaches its highest point, what angle does the cable make with the vertical? ...
March 16, 2014

Physics
i cant seem to find the error but i still cant get the correct answer
March 12, 2014

Physics
A car of mass m moving at a speed v1 collides and couples with the back of a truck of mass 3m moving initially in the same direction as the car at a lower speed v2. (Use any variable or symbol stated above as necessary.) (b) What is the change in kinetic energy of the car&#...
March 12, 2014

Physics
A car of mass m moving at a speed v1 collides and couples with the back of a truck of mass 3m moving initially in the same direction as the car at a lower speed v2. (Use any variable or symbol stated above as necessary.) (b) What is the change in kinetic energy of the car&#...
March 10, 2014

Chem
if 0.24o moles of a monoprotic weak acid is titrated with NaOH, what is the PH of the solution at the 1/2 equivalence point.
March 10, 2014

Chem
500.0 Ml of 0.160 M NaOH is added to 565 ml of 0.250 M weak acid. Ka=2.46x10^-5. What is the pH of the resulting buffer
March 10, 2014

Physics
A car of mass m moving at a speed v1 collides and couples with the back of a truck of mass 3m moving initially in the same direction as the car at a lower speed v2. (Use any variable or symbol stated above as necessary.) (b) What is the change in kinetic energy of the car&#...
March 8, 2014

Physics
After a 0.200-kg rubber ball is dropped from a height of 1.95 m, it bounces off a concrete floor and rebounds to a height of 1.45 m. (a) Determine the magnitude and direction of the impulse delivered to the ball by the floor. (b) Estimate the time the ball is in contact with ...
March 7, 2014

Physics
After a 0.200-kg rubber ball is dropped from a height of 1.95 m, it bounces off a concrete floor and rebounds to a height of 1.45 m. (a) Determine the magnitude and direction of the impulse delivered to the ball by the floor. (b) Estimate the time the ball is in contact with ...
March 5, 2014

math
So confusing!!! :/
March 3, 2014

Physics
Determine the force of gravity on an 850 kg car.
March 3, 2014

Math
x + y = 35 x - y = 7 Can you finish it from this step?
March 1, 2014

algebra
The y-intercept has the value of (0, y) which means the x-value is zero. The tank has been draining zero minutes. Now, can you figure out what the y-intercept will be?
March 1, 2014

Algebra - Functions
See reply below.
February 26, 2014

Math
No... (6, 8) and (10, 4) m = (8 -4)/(6-10) = 4/-4 = -1 m = (4-8)/(10-6) = -4/4 = -1
February 26, 2014

Algebra Help!
1) multiply the funtion by 8 for 8F(x) For f(8x) replace the x in the function with the (8x) 2) Domain is the values for x that can be used so that the function is defined. We never want the square root of a negative number or division by zero because that will caust the ...
February 26, 2014

Physics
A light string can support a stationary hanging load of 26.4 kg before breaking. An object of mass m = 3.19 kg attached to the string rotates on a frictionless, horizontal table in a circle of radius r = 0.795 m, and the other end of the string is held fixed as in the figure ...
February 23, 2014

Physics
A light string can support a stationary hanging load of 26.4 kg before breaking. An object of mass m = 3.19 kg attached to the string rotates on a frictionless, horizontal table in a circle of radius r = 0.795 m, and the other end of the string is held fixed as in the figure ...
February 22, 2014

Chemistry
In a 1.0 x10-6 M of HNO3 (aq) at 25 degrees celsius identify the relative molar amounts of theses species HNO3- H3O+ OH- NO3- H2O
February 21, 2014

calculus
Surface area of revolution y=(x^3)+3 about the x-axis from (0,1)
February 19, 2014

Chemistry
P4 + 5O2 P4O10 , 1.5 moles of product were made in 30 seconds. What is the rate of reaction?
February 19, 2014

world civilizations
What contributions did the Egyptian made to literature
February 17, 2014

math
Write 7,030,000,000 in scientific notation
February 16, 2014

Physics
The gravitational force exerted on a baseball is 2.28 N down. A pitcher throws the ball horizontally with velocity 12.0 m/s by uniformly accelerating it along a straight horizontal line for a time interval of 177 ms. The ball starts from rest. (a) Through what distance does it...
February 15, 2014

Projectile physics
The average speed of a nitrogen molecule in air is about 6.70 ✕ 102 m/s, and its mass is about 4.68 ✕ 10-26 kg. (a) If it takes 3.80 ✕ 10-13 s for a nitrogen molecule to hit a wall and rebound with the same speed but moving in an opposite direction (...
February 13, 2014

math check
23/17 < 5/3 Found LCD 69/51 85/51
February 11, 2014

math check
23/17 < 5/3 Found LCD 69/51 85/51
February 10, 2014

math
One weekend, there were 95 pizzas ordered for the sophomore dorm. That weekend 19 customers ordered their pizza with just pepperoni, 17 customers ordered their pizza with just sausage, 18 ordered theirs with just onions, 15 ordered theirs with pepperoni and sausage, 13 ordered...
February 9, 2014

math
In a survey of 25 college students, it was found that 9 were taking an English class, 14 were taking a math class, and 8 were taking both English and math. How many students were taking a math class only
February 9, 2014

math
3 3/5p =2/5
February 5, 2014

math
3 3/5p =2/5
February 5, 2014

math
Y+4/5=3 1/10 how do u solve
February 5, 2014

math help
I got 2 12/32. When I multiply the mixed fraction 2 1/4, I don't have to add the 1?
February 5, 2014

math help
Evaluate 1/8n + 2 1/4 n=3/4 How do u solve
February 5, 2014

Math
Trail mix is sold in 1 pound bags Mary will buy some trail Mix and repackage it so that each of the 15 members of her hiking club gets one 2/5 pound bag how many 1 pound bags of trail mix should mary buy to have enough trail Mix without leftovers
February 4, 2014

Pol 201
Question 4.4. Liberalism rests in a conception of equality whereby the government (Points : 1)
February 3, 2014

math
There is a dog kennel that has 28 dogs, there is 6 kennels; how many dogs per kennel is there?
February 2, 2014

Physics
thanks so much!!!
January 31, 2014

Physics
If a 65 kilogram load was raised 6 meters in 60 seconds determine the minimum rated wattage of the motor needed to accomplish this assuming the motor is 75% efficient. give your answer in W.
January 31, 2014

Physics
thanks so much!!!
January 31, 2014

Physics
an object in completely submerged in a liquid of density .65 grams per cubic centimeter at a depth of 4 meters what is the total pressure on the object. State your answer in atmospheres. I only get 3 tries and both my other attempts failed. Ill lose credit now please help!
January 31, 2014

Statistics
WEB CALCULATOR EXERCISE Descriptive Statistics 1 The table below presents data for a sample of people who completed a religious survey. Age Gender Denomination Church Attendance 56 1 7 4 46 2 6 5 49 2 6 5 49 1 1 5 27 2 9 5 51 1 4 2 47 2 2 3 67 1 5 4 49 2 2 6 33 1 12 6 55 2 9 5...
January 28, 2014

algebra 2
If the cube root includes only the (x+8), then add 6 to both sides. cube root of (x+8) = 4 Now cube both sides to get x + 8 = 64 x = 58 Check your answer.
January 28, 2014

math
1/6 of whole cake = 2 pieces multiply by 6 to get 12 pieces check your answer. 1/6 of 12 does = 2
January 28, 2014

math
First get the same units 2 m and .9 m wall = x x^2 + .9^2 = 2^2 x^2 + .81 = 4 solve for x.
January 28, 2014

physics
A 61.3 kg astronaut is on a space walk when the tether line to the shuttle breaks. The astronaut is able to throw a 11.0 kg oxygen tank in a direction away from the shuttle with a speed of 10.6 m/s, propelling the astronaut back to the shuttle. Assuming that the astronaut ...
December 18, 2013

math
If 3 divided by X+10 = 1 divided by 2X then what does X equal?
December 16, 2013

math
If 3 divided by X+10 + 1 divided by 2X then what does X equal?
December 16, 2013

Math check
Round 9.9957to the nearst hundredths 10.0000
December 15, 2013

Quick math help
45 = 20 + 3x Solve for x to find how many visits. without algebra... thing about subtracting 20 from 45 to get 25 then divided by 3 to get the number of visits.
December 11, 2013

Quick math help
65 + .45(miles) = daily cost y = 65 + .45x daily cost = 65 + .45(450)
December 11, 2013

math
Write the decimal as a fraction or mixed number. 4.488
December 9, 2013

PHYSICS IMP PLS
That is average a, I ended up using the formula to calculate a speed 0.001 s before the given time then dV/dT to get instantaneous a, which then got the right answer
December 8, 2013

PHYSICS IMP PLS
For a? Derivative with respect to what? We do not know mass, just ratio, so assume x= ration, then derivative of ln(x) =1/x = 1/ratio?
December 8, 2013

Science
For a cell of the CsCl type (figure 9.18), how is the length of one side of the cell,s, related to the sum of the radii of the ions, r subscript cation + r subscript anion? Figure 9.18 : i . imgur . com / zHj2SGW.png Another question : Consider the NaCl unit shell in figure 9....
December 7, 2013

Logic
A fallacy is an argument that a. is a weak inductive argument. b. makes a mistake in deriving a conclusion. c. has a false conclusion. d. is a sound inductive argument.
December 6, 2013

Math
I think that you might have only part of the question here.
December 5, 2013

math
90% of the class = 27 27/.90 = 30 check the 90th percentile means 90% scored at or below. So.. of 90% of 30 does = 27
December 5, 2013

math
50-21 = 29 consonants 29/50
December 5, 2013

Math
Chris = 2(Lacey) - 5 That is 5 less than twice Lacey. Using chris: 5 - 2n 18 chris or 18(5-2n)
December 5, 2013

math
5 + 3 + 2 = 10 5/10 or 1/2 is milk 3/10 is banana 2/10 is strawberry 1/2 times 8 = 4 oz milk 3/10 times 8 = 24/10 or 2.4 oz banana 2/10 times 8 = 16/10 or 1.6 strawberry check: 4 + 2.4 + 1.6 = 8 oz.
December 5, 2013

math
Take the difference to find the discount and then divide that number by 1200 to find the discount rate.
December 5, 2013

math
how do I rename 10 as a fraction
December 5, 2013

math
g(x)=(2x^3+x^2-18x-9)/(x^2+x-6) A. Find the vertical asymptotes. b. find any holes. c. find any oblique or horizontal asymptotes. d. find if the graph crosses the oblique or horizontal asymptote.
December 3, 2013

Math Probability
20 x 20 x 20 x 20 x 20 x 20 You have 20 chances for each number and that happens for each draw... you have 1 chance out of _________ Can you finish from here?
December 1, 2013

MATH
Use the formula y -y1 = m(x-x1) You can use either point and the slope. y - 4 = -2(x-2) y-4 = -2x + 4 y = -2x + 8 Now this is in y=mx+ b form the question wants standard form. Can you finish from here?
December 1, 2013

MATH
y -y1 = m(x-x1) Use either point... y-3 = -1(x+8 y-3= -1x -8 y = -x -5 Now, change to standard from to find the x- intercept.. let y =0 and solve for x. to find the y- intercept, let x = 0 and solve for y.
December 1, 2013

Statistics
We have a population of all adult women. We take a random sample from this population and create a confidence interval. If we take many, many, many different samples from this population we will obtain many, many, many different sample means and confidence intervals created ...
December 1, 2013

us hist
Thank you Ms. Sue for your help. :)
November 30, 2013

us hist
All of the following components represent major objectives of Reconstruction except A) political B) social C) economic D) cultural is D right.
November 30, 2013

us hist
The waning support of Northerners for Radical policy was due in part to A) the retirement of President Johnson. B)the activities of the Ku Klux Klan. C) the increasing fissure between northern and southern whites. D) their loyalty to the Democratic party Is C.
November 30, 2013

us hist
A main weakness in the plan to confiscate land from large plantations to give to freedmen was that A) the large plantations were the main source of employment for freedmen. B) freedmen did not want the land because they did not want to be tied down. C) it was strongly opposed ...
November 30, 2013

us hist
Reconstruction was a period of A) judicial supremacy. B) political inaction and indifference. C) congressional supremacy. D) executive expansion C right ans.
November 30, 2013

us hist
Andrew Johnson’s fundamental goal was to A) guarantee black political rights. B) preserve the economic power of the southern planters. C) fund public education for blacks. D) assist poor whites with free homesteads and public education. Is D Correct?
November 29, 2013

us hist
thank you
November 29, 2013

us hist
As a result of the Emancipation Proclamation, A) Democrats made significant political gains in the Northwest by capitalizing on voters' racist fears. B) Republican politicians vigorously defended the cause of racial justice and black equality. C) the Republican party ...
November 29, 2013

us hist
Between the election of 1860 and his inauguration, Abraham Lincoln A) contacted Jefferson Davis several times. B) worked very closely with President Buchanan. C) made serious attempts to reassure the South. D) did not show much leadership I think it's C?
November 28, 2013

us hist
Which of the following occurred at Fort Sumter a. The Confederate commander refused to fire on the fort and had to be replaced b. Five Union protectors of the fort were killed c. The Confederacy shelled the fort for almost two days before its commander finally surrendered d. ...
November 27, 2013

math
which of the following numbers does not round to the same numbers as the others 5 1/5, 4 5/6, 5 6/7, 4 11/12
November 21, 2013

math check
how much time elapsed from 4:43am unto 12:04 pm? 7hrs 21 mins
November 17, 2013

math
two of the angels in a triangle measures 48 degrees and 79 degrees. what is the measure of the 3 angle?
November 17, 2013

business Calc
A real estate developer would like to analyze his revenue,cost and profit for a specific hosing project that is under construction.last month he sold 20 large houses for m$ 250000 and 10 small houses for $150000.The cost build large houses was c(x)=56000x+50000x+1000x^2 and ...
November 17, 2013

math
Cake
November 5, 2013

math
joe uses 3 5/6 feet of ribbon to wrap one package. how much ribbon does he use to wrap 12 packages ?
November 5, 2013

Anyone wanna help me with this math?
1.a 2.c 3.a 4.d 5.c 6.c 7.d 10.d 11.b n
November 2, 2013

Statistics
HIM department at Community Hospital will experience a 15 percent increase in the number of discharges coded per day as the result of opening a cardiac clinic in the facility. The 15 percent incrase is projected to be 100 additional records per day. The standard time to code ...
October 29, 2013

Statistics
The coding department of a large physician clinic is interested in purchasing a software program that will edit claims before they are sent out to billing. The license fee for the software costs $34,000 per year. The software is expected to reduce the number of errors on ...
October 28, 2013

reading
what metaphor is in daffodils by william wordsworth ?my friend got the same question and we dont understand please answer
October 26, 2013

Chemisty
Answer the questions below for an element that has the electron configuration 1s2 2s2 2p6 3s2 3p3. A. What is the symbol for this element? B. What is the atomic number of this element? C. How many unpaired electrons does an atom of this elelemt have? D. How many valence ...
October 20, 2013

English
What is the adverb and what does it modify in this sentence: A large portion of the Amazon rain forest grows there.
October 17, 2013

Physics
For a scene in a movie, a stunt driver drives a 1.50×103kg SUV with a length of 4.30m around a circular curve with a radius of curvature of 0.333 km (Figure 1) . The vehicle is to be driven off the edge of a gully 10.0 m wide, and land on the other side 2.96 m below the ...
October 15, 2013

geometry
(4x+6)/(16x^2-36)/(4x^2+22x-42)
October 14, 2013

geometry
(4x+6)/(16x^2-36)/(4x^2+22x-42)
October 14, 2013

Physics
a race car driver on a straight track starts the tryout from rest at t = 0 and x = 0. the car accelerates with an acceleration given by a(t) = 0.25t (m/s^2). how far eill the car travel in 12 secs?
October 14, 2013

Chemistry
yes
October 13, 2013

physics
a javelin thrower wished to obtain a record of throwing 100 m on a flat level ground. if he hurls the javelin at 45 degrees from the horizontal, what initial speed must the javelin have?
October 12, 2013

physics
There is a 2kg block resting on a table with a 5kg block attached to the right hanging off the edge of the table and a 4 kg block attached to the left also hanging off the table find the acceleration of the 5 kg block if coefficient of static equals the coefficient of kinetic ...
October 10, 2013

english
You _____ all morning, so there is no reason to be tired.
October 9, 2013

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