Wednesday

June 29, 2016
Total # Posts: 2,429

**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**

Help me
*March 6, 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*

**Social Studies--Check My Answers Please--**

Ms Sue. I have tried time and time again to tell you that your comments are rude. The way you told destiny that shes guessing was rude. If she was genuinely asking than that might have lowered her self esteem. I hope than next time you understand that there are other more ...
*February 20, 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*

**Science help.**

Ms. Sue, i dont know if you will read this, but you shouldnt feel like since your practically famous on jiskha, that you are able to act like you are peoples parents. If they want to "chit chat"(and who says that) as long as they are not hurting anybody as well as ...
*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*

**American history**

b
*January 22, 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*

**physics**

Boobies
*November 19, 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*

**science help!!!**

yeah josslyn is right
*October 18, 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*