Saturday

August 29, 2015
Total # Posts: 866

**human biology**

I need some information on the nephron and H+ ions. My book just has it in a diagram, but the diagram talks mostly about the K+ ion relationship. Can someone just give the gist of the H+ relationship with the nephron? thanks Since this is not my area of expertise, I searched ...
*July 24, 2007*

**algebra**

The equation h = -16t^2 + 112t gives the height of an arrow, shot upward from the ground with an initial velocity of 112 ft/s, where t is the time after the arrow leaves the ground. Find the time it takes for the arrow toreach a height of 180 ft. put in for h 180 ft, factor (...
*July 18, 2007*

**algebra**

solve and check the equation for x. I just can not figure this out. 5/x+6 + 2/x^2+7x+6 = 3/x+1 Thanks! Use parentheses to tell us whether you mean 2/(x^2 + 7x + 6) or 2/x^2 +7x +6 and also whether you mean (3/x) + 1 or 3/(x+1) and also (5/x)+6 or 5/(x+6) also go to myalgebra ...
*July 12, 2007*

**health**

can anyone find me a chart or something that tells me the average weight that a girl a certain height should be? thanks I'm waiting for it to load. Hold on Body Mass Index Chart Calculate your body Mass Index BMI
*June 22, 2007*

**physics**

3.201 kg of gold in rock Therefore rock is 89.67% gold
*June 19, 2007*

**math**

What is the lowest numberthat has a remainder of 1 when divided by 2 and a remainder of 2 when devided by 3 and a remainder of 3 when divided by 4 and a remainder of 4 when divided by 5? The answer is 59. There is a general method for solving such problms, but in this case you...
*June 7, 2007*

**math**

what is the lowest number which is divisible by 1,2,3,4,5,6,7,8 and 9? Go to: http://www.helpwithfractions.com/least-common-denominator.html And apply method 2 It works very well.
*June 7, 2007*

**health**

I think drinking to subside pain runs in some familes. When it happens with one parent.. then now with the other, is it safe to say its a family thing or just an everybody thing? Can someone give me some insight? Do you mean drinking as in alcholic? Alcoholics will drink at ...
*May 24, 2007*

**Personal Finance-Mathe**

Sue and Tom Wright are assistant professors at the local university. They each take home about $40,000 per year after taxes. Sue is 37 years of age, and Tom is 35. Their two children, Mike and Karen are 13 and 11. Were either one to die, they estimate that the remaining family...
*May 6, 2007*

**English**

How can readers distinguish between prejudicial and non-prejudicial use of rhetorical devices? Here's a previous answer to this question. Posted by Ms. Sue on Tuesday, June 27, 2006 at 6:03pm in response to CREATIVE WRITING. This question has been asked and answered here ...
*April 16, 2007*

**Health**

Its a bacterial illness that is carried by ticks, they are the carriers not the cause
*April 15, 2007*

**COLOR THEORY**

I NEED HELP WITH THIS TEST.....
*March 27, 2007*

**personal finance**

Sue and Tom Wright are assistant professors at the local university. They each take home about $40,000 per year after taxes. Sue is 37 years of age, and Tom is 35. Their two children, Mike and Karen are 13 and 11. Were either one to die, they estimate that the remaining family...
*March 23, 2007*

**conditioning**

is obesity an inherited gene No. The tendency of Americans to become obese, and even morbidly obese, has shown up markedly in the last two generations. If it were inherited, it could be to an evolutioary case of "survival of the fittest", which obviously is not the ...
*March 15, 2007*

**music**

how many steps would you have to go to translate from french horn to trumpet, for example if a trumpet is playing a C what would that be in horn Thank you for using the Jiskha Homework Help Forum. The French Horn is in the key of B flat and F while a Trumpet is usually B flat...
*March 14, 2007*

**science**

I need to know about the wind patterns, tides/high and low,or upwelling for the north sea,irish sea,and the bay of biscay Thank you for using the Jiskha Homework Help Forum. Here is what I find: 1. http://gpc.edu/~pgore/Earth&Space/GPS/waves-currents-tides.html 2. http://gpc....
*March 14, 2007*

**business**

are all banks part of the federal reserve system? As Fedaral reserve system is considered as the leader of the banking system in U.S.A, all banks are resposible to to the Federal reserve system. But they not treated as the branch of the federal sytem
*March 12, 2007*

**business**

What happened when the governmant deregulated the banking industry? Check these sites. http://www.phil.frb.org/education/history/history_of_Banking8.html (Broken Link Removed)
*March 12, 2007*

**Language Arts**

What goes in a conclusion paragraph? http://nutsandbolts.washcoll.edu/ending.html http://grammar.ccc.commnet.edu/grammar/composition/endings.htm http://leo.stcloudstate.edu/acadwrite/conclude.html from http://leo.stcloudstate.edu/catalogue.html =)
*March 5, 2007*

**science**

what is the difference between a theory and hypothesis? I got this off another site i hope it helps.. Scientific Laws, Hypotheses, and Theories Lay people often misinterpret the language used by scientists. And for that reason, they sometimes draw the wrong conclusions as to ...
*February 8, 2007*

**Physics**

A shell is shot with an inital velocity of 20m/s at an angle 60 degrees with the horizontal. At the top of the trajectory, the shell explodes into two fragments of equal mass. One fragment whose speed is immediately after the explosion zero falls vertically. How far from the ...
*January 29, 2007*

**Physics**

A 0.165kg cue ball with an inital speed of 2 m/s bounces off the rail in a game of pool. For x and y axses located the counce reverses the y component of the ball's velocity but does not alter the x component(the angle is 30 in the negative x axis and it bounces across the...
*January 29, 2007*

**Physics**

A 75 kg man on a 39kg cart traveling at a speed of 2.3 m/s. He jumps off with zero horizontal speed realative to the ground. What is the resulting change in the speed of the cart? I tried using m1v1=m2v2 but that didn't work out since I was expose to get 4.4 m/s as the ...
*January 29, 2007*

**Physics**

A luggage handler pulls a 20kg suitcase up a ramp inclined at 25 degrees above teh horizontal by a force F of magnigutde 145N that acts parallel to the ramp. The coefficient of kinetic friction between teh ramp and the incline is .30. If the suitcase travels 4.6 m along the ...
*January 18, 2007*

**calc**

Why would fZ(x) =2x^3 on [-1,1] fail to satisfy the conditions of the Mean Value therorm? It is continuous and differential. So what is wrong with it I can't figure it out. I agree with you. The theorem should apply for that "fZ" function over that interval. Is ...
*January 16, 2007*

**calculus**

Let f be a function defined by f(x)= arctan x/2 + arctan x. the value of f'(0) is? It's 3/2 but I am not very clear on how to obtain the answer. I changed arctan x/2 into dy/dx=(4-2x)/(4sqrt(4+x^2)) but that's as far as I got. Could you please show me how to solve ...
*January 16, 2007*

**Calc**

a) y =ln(x-1) find dy/dx=? b) y=3 ln x - ln (1/x) where x >0, dy/dx= ? My teacher says the answers are a) (2x)/(x^2-1) and b) 4/x I am not sure how you find the derivative when they involve ln. Could you please explain to me how to get these answers? I have a quiz on them ...
*January 16, 2007*

**physics**

A 30g bullet with a horizontal velocity of 500m/s comes to a stop 12 cm within a solid wall. a) what is the change in its mechanical energy? b) What is the magnitude of the average force from the wall stopping it? a) what would I use of the equation? Can you please explain ...
*January 10, 2007*

**physics**

A 12 kg block is released from rest on a 30 degree fricitonless incline. Below the block is a spring that can be compressed 2 cm by a force of 270 N. The block momentarily srops when it compresses the spring by 5.5 cm. a) How far does the block move down the incline from its ...
*January 5, 2007*

**physics**

A 1.5 kg snowball is fired from a cliff 12.5m high with an inital velocity of 14 m/s directed 41 degrees above the horizontal. a) how much work is done on the snowball by the gravitaitonal force during its flight to the flat ground below the cliff? b) what is the change in the...
*January 4, 2007*

**physics**

A small block of mass m can slide along the frictionless loop-the loop. The block is released from rest at point P, at height h =5R above teh bottom of the loop. How much work does the gravitational force do on the block as teh block travels from point P to a) point Q (which ...
*January 4, 2007*

**Physics**

What is the spring constant of a spring that stores 25 J of elastic potential energy when compressed by 7.5 cm from its relaxed length? I know that I should chnage 7.5 cm into .075 m. Is this equation correct? U(x)= 1/2kx^2. I should have gotten 89N/cm for the correct answer ...
*January 2, 2007*

**Physics**

You drop a 2 kg textbook to a friend who stands on the ground 10m below the testbook with outstreatched hands 1.5m above the ground. a) how much work W_g is done on the textbook by the gravitational force as it drops to your friend's hands? b)What is the change in the ...
*January 2, 2007*

**calculus**

Let f(x) = (x+1)/(x-1). Show that there are no vlue of c such that f(2)-f(0) =f'(c)(2-0). Why does this not contradict the Mean Value Theorem? I plugged 2 and 0 into the original problem and got 3 and -1 . Then I found the derivative to be ((x-1)-(x+1))/(x-1)^2. Whould ...
*December 17, 2006*

**Organic chemistry!!!Need helpp!!!**

1. Consider the effect of water concentration on rate of the reaction in water and acetone. WOuld you predict that the rate would be greater or less in the presence of a higher concentration of water? Explain your answer, using the structure of the transition state. 2. ...
*December 10, 2006*

**Organic chemistry!!!Need helpp!!!**

1. Consider the effect of water concentration on rate of the reaction in water and acetone. WOuld you predict that the rate would be greater or less in the presence of a higher concentration of water? Explain your answer, using the structure of the transition state. 2. ...
*December 10, 2006*

**Math**

For two consecutive integers, the sum of the smaller and twice the larger is 38. What are the integers? Plz explain. Thanks 2(a+b)=38 Therefore: a+b+(2(a+b)=38 a+b+2a+2b=38 3a+3b=38 3(a+b)=38 I got as far a here. I dont know if this helps. My last stop may be worng. This might...
*November 29, 2006*

**Opinion needed plz!!**

Is the algebraic model more better to use than the systematic trial model? Why?? thanks When it comes to algebra it depends on what is easier for you.
*November 28, 2006*

**the scarlet letter genre**

it is a romantic drama
*October 31, 2006*

**Math**

how to do a sub n=n+1 over 4 12+6=
*October 26, 2006*

**Owen**

How to do a+d=f
*October 26, 2006*

**grammar**

Although heated in the microwave, I found the center of the pizza cold.
*October 10, 2006*

**Shakespeare 2**

yes
*October 8, 2006*

**phys.**

Hey, i feel kinda embarassed asking this because it looks so simple. a mass of 300kg which is positioned 1000m above the ground is allowed to fall to the ground. what will be its velocity on impact? Use the basic velocity formula. Initial velocity is zero; solve for final ...
*October 7, 2006*

**Physics**

Use the definition of scalar product( vector A* vector B = abcos theda and the fact that vector A * vector B = axbx+ ayby+azbz to calculate the angle between the two vectorgiven by vector A= 3i + 3j + 3k and vector B= 2i + 1j + 3k. The book said the answer is 22 degreess but I...
*October 6, 2006*

**physics**

Vector A has the magnitude of 12 m and is angled 60 degrees counterclockwise from the positive direction of the x axis of an xy plane. Also vector b = 12i + 8j on that same corrdinate system. We now rotate the system counterclockwise about the orgin by 20 degrees to form a new...
*October 6, 2006*

**Physics**

Vector a has a magnitude of 5 m and is directed esast. Vector b has a magnitude of 4 m and is directed 35 degrees west of north. What are the (a) magnitude and (b) the direction of vector a + vector b? What are the (c)magnitude and (e)direction of vector b - vecotr a? (f) Draw...
*October 4, 2006*

**Physics**

The two vectors a and b have equal magnitudes(on an x-y plane vector a is 30 degrees from the x axis then vector b is 75 degrees from the head of vector a it is heading towards north west) of 10m A)find the x component of their vector sum r B)find the y component of their ...
*October 2, 2006*

**Identifying controls and Variables**

control-group b imdependant-group a
*October 1, 2006*

**thank you live experts**

hey jiskha live experts i just wanted to thank you for all the help. you guys are the best! by the way, I will try to learn more English, thanks! Many thanks. Thanks for posting.
*September 17, 2006*

**Chemistry**

The population of San Francisco is 750,000 in an area of 49 square miles. What is the population density in San Francisco? Express your answer in people per acre. ( 1mi(squared) = 640 acres ) 49 sq mi x (640 acres/1 sq mi) =?? acres. (Note that sq mi cancels leaving acres.) ...
*September 13, 2006*

**Algebra**

How do you get the vertex of this absolute value? y = -2 |4x - 1| + 16 By vertex you mean the highest point. Find out where the expression inside the absolute value is 0. Since the absolute value is always positive, in this expression some quantity is being subtracted from 16...
*September 10, 2006*

**algebra 1**

if you go from one point to the other do you subract the a and b or do you do all points in between to find the elevation? I'm not sure what this question refers to. Are you trying to calculate slopes?
*September 5, 2006*

**English/European history**

In Machiavelli's, The Prince, what does Machiavelli consider the ideal economy? The ideal economy, according to Machiavelli, is one in which there is little or no taxation. Thus the public is free to prosper as much as he or she desires, without any concern that the ...
*September 3, 2006*

**History**

How is Southern, Middle, and New England colonies devided? Where is an area known as "tidewater" VA? Since this is not my area of expertise, I searched Google under the key words "Southern middle New England colonies" to get these possible sources: http://...
*August 30, 2006*

**English**

what could be some reasons to why abstract language is used? One reason is that the concept that is being dealt with is abstract. They cannot be sensed directly as can apples, grasshoppers and bricks. Concepts like freedom, evil, beauty, truth and love are abstract. I hope ...
*August 28, 2006*

**Math**

how do you solve for y in the expression: x^3=y(y+3)? x^3=y^2 + 3y y^2+3y- x^3=0 Using the quadratic formula.. y= (-3+-sqrt(9+4x^3) )/2
*August 24, 2006*

**English**

the question asks me to describe the writer's style (serious, sarcastic, etc.) what could be some other answers to this question? Style has to do with HOW writers use words and sentences, as well a how they construct sentences, paragraphs, etc. Style can be formal, ...
*August 23, 2006*

**Algebra**

Solve for s: h=(square root of 3)times s/2 and solve for h V= (pi)r squared h / 3 Solve for s: h=(square root of 3)times s/2 Multiply both sides by 2. 2h = (sqrt 3)*s*2/2 which cancels the 2 on the right. 2h = (sqrt 3)*s Now divide the right side by everything except what you...
*August 17, 2006*

**Algebra**

Could someone please help me find x in this problem and explain how you got the answer? 2(3x - 1) = 5 - (x + 3) I checked the answer I got in the back of my algebra book and it said the answer was 4/7 but my answer was wrong. How did they get 4/7 out of this? 2(3x - 1) = 5 - (...
*August 12, 2006*

**orientalism of muslim and arab american**

LOL... Same school. Same question. Same problem. Different year ;-)
*August 6, 2006*

**orientalism of muslim and arab american**

LOL... Same school, same question, same issue!!! Different year ;-)
*August 6, 2006*

**Ethnics**

Not my email.. my user name.. tried to do my email, to be found easier, but the site prevents it.. Anyways.. Good luck everyone!! YEA UOP!!!!
*July 20, 2006*

**Ethnics **

LMAO! Soo Hilarious! Another Ethnics Student from AXIA!! YAY!! Thanks for all the help, I read the dang chapter and had like 100 words already on how one could measure prejudice but I was trying to find out more of an correct answer through the chapter. LMAO! Anyways, feel ...
*July 20, 2006*

**ICT**

I need to write an essay to explain 'why companies use logos'. Help me. Companies' logos help sell their products. Long before they can read, small children recognize the McDonald's big M and know that it means hamburgers and treats. Think about other logos you...
*June 12, 2006*

**ICT**

help i need to write an essay explaining 'why companies use logos'. yours sincerely, Jamie
*January 2, 2006*