# Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 2x + 10y = 58 -14x + 8y = 140

91,718 questions, page 704-
## math

Use the discriminant to determine whether the following equations have solutions that are: two different rational solutions; two different irrational solutions; exactly one rational solution; or two different imaginary solutions. x^2=3x-6

*asked by sarah on February 17, 2011* -
## math

use the discriminant to determine whether the following eqautions have solutions that are;two different rational solutions;two different irrational solutions;exactly one rational solution;or two different imaginary solutions x^2=3x-6

*asked by sam on February 16, 2011* -
## chemistry

given that 5milimeter of 5.2mol per liter NaCl will be used to prepare 0.026mol per liter NaCl, describe how you will prepare this solution?

*asked by stephen on May 22, 2019* -
## chemistry

When a base is introduced into this buffer, which of H2CO3 and HCO3− reacts with the base to maintain the pH of the solution? HCO3− H2CO3

*asked by Jennifer on March 16, 2017* -
## Chemistry

If the 3 moles of Calcium Nitride was then dissolved in 2 L of liquid ammonium what would the molarity of the Calcium Nitride /ammonium solution be?

*asked by moata on April 15, 2012* -
## chemistry

Calculate the mass of nickel(II) sulfate and the mass of water contained in 200. g of a 6.00% solution of nickel(II) sulfate

*asked by Sarah on March 4, 2014* -
## MATH

use the discriminant to determine whether the following equation have solutions that are : two different rational solutions : two different irrational solutions : exactly one rational solution : or two different imaginary solutions 7+5z^2=-8z

*asked by LIZY on March 26, 2013* -
## Chemistry

What is the boiling point of each solution? a).50mol glucose in 1000g H2O b)1.50mol NaCl in 1000g H2O

*asked by Kim on April 29, 2010* -
## chemistry

In 24 g of a 7.8% by mass solution of CaSO4? How many grams of solute are present gCaSO4? how many grams of solvent are present g solvent?

*asked by Anonymous on December 9, 2010* -
## Math/chem

If the temperature of a solution goes up 25degrees in 7 minutes, what is the rate of change of temperature? (Rate= temp. Change/ time)

*asked by Jamie on September 3, 2014* -
## Chemistry

Determine the pH of a solution made by mixing 50,00 mL of 0,100 M nitric acid with 100 mL of 0,200 M nitric acid

*asked by Anonymous on September 3, 2015* -
## Chemistry

To 1.0 ml of 1.5%NaCl, water is added to a final volume of 100ml. What is the molarity NaCl of this final solution? 1.5g/100ml I do not know where to go from here?

*asked by Samantha on November 30, 2014* -
## Math

Can someone please help/show me how to Graph linear equations?? Directions~ Graph the following linear equations by plugging in values for x, solving for y, and keeping track of your x- and y-values in a table. You should determine at least three points on

*asked by Abby on October 20, 2015* -
## math

Roscoe must play 9 commercials during his 1-hr radio show. Each commercial is either thirty seconds or sixty seconds long. If the total commercial time during that hour is 6 minutes, how many commercials of each type does Roscoe play? Round answers to the

*asked by duran on May 11, 2016* -
## Physics

Consider eight, eight-cubic centimeter (8 cm3) sugar cubes stacked so that they form a single 2 x 2 x 2 cube. How does the surface area of the single, large cube compare to the total surface area of the individual eight cubes? Report your answer as a

*asked by Ariel on December 4, 2015* -
## math

please help with in a day jamal spent 1 2/3 hours watching television 1 4/5 hours taking an afternoon nap, and 7/8 hour helping his mother with housework how much time did Jamal spend on watching television and helping with housework do I have to change

*asked by stacy on May 11, 2015* -
## Maths - Cartesian Equations

Find the corresponding Cartesian equation for each pair of parametric equations: x = t - (1/t) and y = 2*[t + (1/t)] The answer is y^2/16 - x^2/4 = 1 I have no idea where to begin. I tried squaring both equations in hope to easily remove t^2 but ended up

*asked by Jichu on December 27, 2016* -
## physics

Consider eight two-cubic centimeter (2 cm3) sugar cubes stacked so that they form a single 2 x 2 x 2 cube. How does the surface area of the single, large cube compare to the total surface area of the individual eight cubes? Report your answer as a ratio.

*asked by Ciara on April 6, 2015* -
## math

the profits of Mr/ Lucky's company can be represented by the equation y=-3x^2+18x-4, where y is the amount of profit in hundreds of thousands of dollars and x is the number of years of operation. He realizes his company is on the downturn and wishes to

*asked by jordan on December 1, 2009* -
## physics im stuck

Two identical small insulating balls are suspended by separate 0.27 m threads that are attached to a common point on the ceiling. Each ball has a mass of 6.20 10-4 kg. Initially the balls are uncharged and hang straight down. They are then given identical

*asked by physdummy on August 31, 2008* -
## Chemistry PLEASE HELP!

Check all of the following statements which are TRUE for a titration. Select one or more: a. A suitable primary standard must be available. b. The concentration of the solution in the buret (the titrant) must be known before the titration is begun. c.

*asked by Sophie on May 5, 2013* -
## english

Can some one explain this passage I do not understand it it is by hazlitt it is called "on the want of money" There are two classes of people that I have observed who are not so distinct as might be imagined - those who cannot keep their own money in their

*asked by steph on April 17, 2007* -
## Math(Factorial)

A women student is to answer 10 out of 13 questions on a test. Find the number of choices where she must answer: (a) the first two questions; (b) the first or second questions but not both; (c) exactly 3 out of the first 5 questions (d) at least 3 of the

*asked by Anonymous on April 9, 2014* -
## accounting

Selected T-accounts for Rolm Company are given below for the just completed year: Raw Materials Manufacturing Overhead Bal. 1/1 31,000 Credits ? Debits 390,000 Credits ? Debits 420,000 Bal. 12/31 56,000 Work in Process Factory Wages Payable Bal. 1/1 73,000

*asked by sally on September 8, 2012* -
## thermodynamics

There are 1.36 kgm of air at 137.9 Kpaa stirred with internal paddles in an insulated rigid container whose volume is 0.142 m3, until the pressure becomes 689.5 Kpaa. Determine (a) the work input, (b) Δ(pV), and (c) Q. Cp=1.0062 kj/(Kgm.°K), Cv = 0.7186

*asked by abuan on February 29, 2016* -
## Algebra/Language Arts

I have a 15 page paper due tomorrow. I finished the paper, and edited it and all, that's not my problem. My cover page is a work of art that I designed and I wanted to put a note on how it relates to my essay. How would I go about doing this? Do I add a

*asked by MathMat on March 13, 2014* -
## English

1. I have a lot of work to do. - Why don't you ask your brother to help you? - You should ask your brother to help you. - So you can't go out to play soccer, can you? - (Somethine else) 2. I am going to Vietnam this winter. - Really? Congratulations! -

*asked by rfvv on November 26, 2015* -
## eng 22

Which of the following leads to the deepest appreciation of a film? Turning off your brain completely and letting life’s pressures slip away Paying attention to what a film is trying to say Learning the technical names of a film’s elements Learning the

*asked by kim on February 19, 2012* -
## Trig- math

Find the area of a triangle if the sides of the triangle have the lengths 849mi, 930mi, and 1301mi. Here's my work: a=849 b=930 c=1301 A=.5(849)(930)sinA sin A = 394,785 mi^2 (this number doesn't seem right to me, can you explain to me what I did wrong)?

*asked by Alexis on November 23, 2014* -
## physics

A 68 student consumes 2500 Cal each day and stays the same weight. One day, he eats 3500 Cal and, wanting to keep from gaining weight, decides to "work off" the excess by jumping up and down. With each jump, he accelerates to a speed of 3.4 before leaving

*asked by ekaterina on November 28, 2011* -
## physics

There are 1.36 kgm of air at 137.9 Kpaa stirred with internal paddles in an insulated rigid container whose volume is 0.142 m3, until the pressure becomes 689.5 Kpaa. Determine (a) the work input, (b) Δ(pV), and (c) Q. Cp=1.0062 kj/(Kgm.°K), Cv = 0.7186

*asked by silent on February 29, 2016* -
## physics

A movable piston having a mass of 8.00 kg and a cross-sectional area of 5.00 cm2 traps 0.200 moles of an ideal gas in a vertical cylinder. If the piston slides without friction in the cylinder, how much work is done on the gas when its temperature is

*asked by julie on January 4, 2011* -
## physics help please...

A movable piston having a mass of 8.00 kg and a cross-sectional area of 5.00 cm2 traps 0.200 moles of an ideal gas in a vertical cylinder. If the piston slides without friction in the cylinder, how much work is done on the gas when its temperature is

*asked by julie on January 4, 2011* -
## trig

A car drives 1000 feet on a road that is 8 degrees to the horizontal, as shown in the figure. The car weighs 3400 lb. Thus gravity acts straight down on the car with a constant force F=-3400j. Find the work done by the car in overcoming gravity?

*asked by Jonny on June 6, 2014* -
## Physics 102 (College)

A few homework problems. 1) The temp of a monotomic ideal gas remains constant (isothermic) during a process in which 4250 J of heat flows out of gas. How much work is done? Pos/neg? delta T = 0 and delta U = 0 by inference Q = 4250 U = 3/2 nRT Thanks for

*asked by Carla on February 27, 2011* -
## Math help

The weights of ripe watermelons grown at Mr. Smith's farm are normally distributed with a standard deviation of 2 lb. Find the mean weight of Mr. Smith's ripe watermelons if only 5% weigh less than 18 lb. (Give your answer correct to one decimal place.) lb

*asked by Tom614 on June 12, 2013* -
## physics

A constant force of 20N is applied tangentially to a string wound on the rim of a 40 cm diameter wheel, initially at rest. (i) How much work does this force do as it turns the wheel through 45„a? (3 %) (ii) If the wheel has mass 8.0 kg and radius of

*asked by Oisin on July 20, 2010* -
## thermodynamics

There are 1.36 kgm of air at 137.9 Kpaa stirred with internal paddles in an insulated rigid container whose volume is 0.142 m3, until the pressure becomes 689.5 Kpaa. Determine (a) the work input, (b) Δ(pV), and (c) Q. Cp=1.0062 kj/(Kgm.°K), Cv = 0.7186

*asked by abuan on February 29, 2016* -
## Physics

A 17.8 kg block is dragged over a rough, horizontal surface by a constant force of 72.8 newtons acting at an angle of 31.3 degrees above the horizontal. the block is displaced 64.4 m and the coefficient of kinetic friction is 0.239. find the work done by

*asked by Giana on September 20, 2015* -
## UOG. Cemistry

Supposing we allow 272g of phosphorus to react with excess oxygen which forms tetraphosphorus decoxide P4O10 in 89.5% yield. In the second step reaction, a 96.8% yield of H3PO4 is obtain by reacting P4O10 with 6H2O. Work out the mass of H3PO4 obtained?

*asked by Kawale Bogken (Boryal) on May 17, 2016* -
## Physics

A charge of 28.0 nC is placed in a uniform electric field that is directed verticall upward and that has a magnitude of 4.00*10^4 N/C. What work is done by the electric force when the charge moves (a)0.450 m to the right (b) 0.670 m upward (c) 2.60 m at an

*asked by Harper on January 28, 2008* -
## Molecular Speeds

Can someone just work me through how to do this one problem? I should be OK on the rest then. Calculate the rms speeds of N2 molecules at 23 degrees C and at 125 degrees C. Sketch the approximate curves of the molecular speed distributions of N2 at 25

*asked by Anna on November 19, 2008* -
## Physics

A roller coaster with people on board has a total mass of 4500 kg and starts at a height of 22 meters with a speed of 2.0 m/s. 50 kJ of work is done by friction on the way to the bottom of the ride. What is the speed at the bottom of the ride? I'm

*asked by mssailormouth on June 22, 2019* -
## LEARNING SKILLS

Suppose you're just beginning to study the information in your third shipment of material. When can you expect the next shipment to be sent? A. When you submit a certain number of examinations in your current shipment B. When you call DIAL-A-QUESTION® and

*asked by Anonymous on January 27, 2011* -
## Writing...Grammar

Is the common error in the following sentence a dangling modifier? Having risen because of the rains, the hikers were unable to cross the river. Yes. As Ms. Sue said earlier, the phrase ("Having ... rains") needs to be close to what it modifies. So ask

*asked by Mandi on July 27, 2007* -
## BUSINESS

You have been asked to evaluate the country you selected as a potential market for your product(s)/service(s) and present your findings to other managers of the organization in a memo. In your memo, be sure to address the following: Provide a brief

*asked by Sugar on September 22, 2008* -
## english Ms. Sue Help Please check my answers

Jaws of the Water ACT TWO At rise we see DAD, TINA, and MARK rushing in and out of the living room. Each enters carrying important items—such as sleeping bags, rain gear, and gallons of water—sets them down, and exits. All three come in together, and

*asked by Sumii on April 23, 2013* -
## geometry

A spherical scoop of ice cream has radious 1.25 inches. The scoop is placed on top of a cone with radious of 1 inch and height of 5 inches. Is the cone large enough to hold all the ice cream if it melts? Show your calculations and explain your answer.

*asked by Piggy on March 2, 2012* -
## Social studies

What is one of the things the federales reserve system does? Set income tax rate at the federal level Influence interest rates•• Decided who can open bank account Give loans to bank customers How might the government deal with a huge company that has

*asked by Kayla on May 9, 2017* -
## Some Lab Question (s)

Yes...another calculation problem. Rxn: 1ml isopentyl alcohol + 1.5ml glacial acetic acid + 3 drops sulfuric acid=> isopentyl acetate to calculate the theoretical yield.. I know that the acetic acid is in excess but how would I calculate the theoretical

*asked by ~christina~ on March 8, 2008* -
## math

Tx unemployment rate is 7.2% If a total of 390,000 people who are able to work using the unemployment rate to determine how many people would be unemployed?

*asked by Denyse on September 3, 2012* -
## Physical Science

An exercise spring has a spring constant of 315 N/m. How much work is required to stretch the spring 30 cm? What force is needed to stretch the spring 30 cm?

*asked by William on December 19, 2012* -
## Physics

A container of gas is at a pressure of 1.3x10^5 Pa and a volume of 6.0m^3. How much work is done by the gas if it expands at constant pressure to twice its initial volume? Please help ;_;

*asked by IDK on April 27, 2016* -
## chemistry

balance: SO2(g)+O2(g)------->SO3(g) the concentration of SO2 and O2 are determined to be [0.06] and [0.03] if the following reaction has a Kc of 3.6x10^2, what is the concentration of SO3???? any work would be much appreciated thank you!!

*asked by Mandy on February 28, 2012* -
## Biology

Which of the following statements about enzymes is not true? A) Enzymes work best at a specified pH B) All enzymes have the same shape as their substrates. C) Enzymes are proteins. D) The shape of an enzyme allows it to do its job.

*asked by Victoria on May 12, 2017* -
## physics

The work done by an electric force in moving a charge from point A to point B is 2.76 10-3 J. The electric potential difference between the two points is VA − VB = 47.5 V. What is the charge

*asked by michelle on January 12, 2011* -
## physics

A 4.5 kg can of paint is sitting on top of a 0.8 meter high step ladder. How much work did you do to move the can of paint to the top of the ladder?

*asked by Josue on December 15, 2010* -
## Math

Which is the expression that can be factored using the greatest common factor for this equation? 6p^3-12p^2+9p A. 3(2p^3-4p^2+3p) B. 3p(2p^2-4p+3) c. 3p^2(2p^2-4p+3) D. 6p(p^2-2p+9) I believe it is B because only A and B work but B is the greatest common

*asked by B6 on March 29, 2013* -
## math 115

could someone check my work please? 1.List the factors of each of the following numbers.66 1,11,6 2.Use the following list of numbers for exercises 13 and 14. 0, 1, 15, 19, 23, 31, 49, 55, 59, 87, 91, 97, 103, 105 15,55,105 answer 3.1,55, 1,57,

*asked by p on September 2, 2009* -
## Physics 112

Moving a charge from point A, where the potential is 370V , to point B, where the potential is 190V , takes 4.1×10−4J of work. Part A What is the value of the charge?

*asked by Phil on January 30, 2014* -
## Maths

It takes 3 artists 24 days to paint a building. Calculate how long it will take 6 artists to paint the building if they work at the same rate

*asked by Chantell on January 23, 2016* -
## chemistry

1.30 grams of chromium reacts with 9.5 grams of iodine. What is the percent of chromium in this compound? How do I work out this answer. I know answer is 12.02, but can figure out how to get it! Thanks!

*asked by Quick chem question on March 26, 2011* -
## math help

Consider the following. (Give your answers correct to two decimal places.) (a) Determine the value of the confidence coefficient z(á/2) for 1 - á = 0.87. (b) Determine the value of the confidence coefficient z(á/2) for 1 - á = 0.91. can someone just

*asked by Tommy8 on June 22, 2013* -
## English-Writing

In citing work in an essay from a textbook in MLA format do you: use the textbook name and then the page number or do you use the publishers name with the page number?

*asked by Sue on December 4, 2009* -
## Math

The ratio of 7th to 8th graders in a play is 2:3. There are 30 students in the play. How many are 8th graders? How do you work this problem is like this 2/3 x30/1=60/2=20 is this right

*asked by Johnnie on February 6, 2019* -
## physics

a warehouse employee is pushing a 38 kg desk across a floor at a constant speed of 0.4 m/s. How much work must the employee do on the desk to change the speed of 1.5m/s?

*asked by jorge on November 2, 2014* -
## computer science

You work for a company that requires you to compute the average temperature for 8 A.M. to 6 P.PM. each day. You are to computer program to compute the average temperature.

*asked by jamal on February 2, 2012* -
## physics

what happens when light moves from a material with a lower index of refraction to another material with a higher index of refraction? please sho work and thank u

*asked by maria on December 1, 2010* -
## Physics

the human body is only about 25 % efficient at converting input chemical energy to useful work. where does the rest of the input chemical energy go?

*asked by John on November 16, 2016* -
## Math

Please help me with this home work Triangle ABC ~ Triangle ADE AD=5; DB=3.5; BC=5.1; AE=6; EC=x What is the length of AB? What is the length of DE? Write an expression that represents AC? What is the length of EC? What is the length of AC? Thank you

*asked by Kenny on November 11, 2015* -
## Trignometry

Can you please help me prove that ((1-cosx)/(1+cosx))=(cscx-cotx)^2? I can only do work on one side to prove that its end result is equal to the other side.

*asked by Potterhead on December 16, 2013* -
## Biology

I am a bit confused about conjugation, transduction and transformation. I understand the basics but how do they work? More confused with transduction and transformation. Thanks for any help in advance!

*asked by Anonymous on January 17, 2010* -
## math

If 16 men can construct 800 tables in 9 days how long will it take 15 men to construct 1000 tables if they work at the same rate

*asked by victor on June 9, 2017* -
## math

Terry bicycles for 1/4 at an average speed of x km/hr. He then cycles for 1/3 hour at an average speed of x+10 km/hr. he cycles a total distance of 15 km. work out the value of x.

*asked by maverick on December 10, 2009* -
## Math

Flying against the wind, Lisa made the flight from Reno in 3 h with a steady airspeed of 400km/h. Returning later with a tail wind that had doubled in magnitude, she landed 225 km beyond the starting point in 3 h. What was the original wind speed? How far

*asked by Anonymous on February 6, 2011* -
## Chemistry

One of my homework problems deals with finding the change in entropy of the surroundings using the equation delta(S)= -delta(H)/T(temp.) The numbers given were T=263K and delta(H)fusion=6.0*10^(3) J/mol I know how to solve the problem, I just want to know

*asked by Confused on February 24, 2013* -
## Algebra

if you are looking at the horizon, you can determine the distance you are from the horizon in miles D from a height h in feet by the equation of D = 1.2 square root h if you are standing on a mountain top that is 12000 feet in elevation how far are you

*asked by Rasmussen on August 27, 2013* -
## Physics

A squash ball hits a wall at a height of 4m and a distance of 6m away. If the ball left the racquet with a speed of 15m/s, with what angle did the player hit the ball? I have applied concepts of projectile motion and tried kinematic equations. However I

*asked by Tim on June 20, 2016* -
## chemistry

Question: how to solve for a 28.4 L sample of methane gas is heated from 35.0° C to 76.0° C. The initial pressure of the gas is 1.00 atm at 35.0° C. Assuming constant volume, what is the final pressure of the gas? Could someone give me the setup for

*asked by sandy on November 22, 2011* -
## Math (algebra)

I have no idea how to solve this problem... A village wants to build a community center that is projected to cost 1.2 million dollars. Cost per resident is increased by #$ as it is discovered that there are 225 fewer residents than when planning began 2

*asked by Ashley on October 12, 2012* -
## prealgebra

a junior basketball player has a goal of scoring at 1,000 points during his high-school career. his team plays twenty games per year, after two years he has 320 points. to be successful, how many points does he have to average per game over his last two

*asked by mikey on October 18, 2017* -
## Chemistry- gaz and stoechiometry

The preparation of KClO3 follows these equations: 2KMnO4 + 16HCl->2KCl + 2MnCl2 + 5Cl2 (g) + 8H2O 3Cl2 (g) + 6KOH ->KClO3 + 5KCl + 3H2O 1) How many moles of KClO3 are produced by one mole of KMnO4 I think the only link between the two equations is Cl2 but

*asked by Ele on April 28, 2016* -
## Eng Ms. Sue

I'm typing the final draft of my essay. I finished but I'm having major difficulty figuring out of how to cite my quote properly on my work cited page. I have been to alot of websites that shows examples but I'm so confused. Can you please help me. That's

*asked by Michele on February 18, 2009* -
## Social Studies

Which of the following was true of people moving to suburbs and purchasing automobiles? A. Women were allowed to drive and thereby gained more freedom. B. It was a lifestyle only the wealthy could afford. C. Women were left isolated all day as men took the

*asked by Martha on March 12, 2019* -
## Statistics

You have heard the commercial for the restaurant that lets you pick any 3 appetizers, any of the 6 entree items and then a dessert. You have been told there are 72 different meal options. How many desserts are available? I don't understand how to calculate

*asked by Kim on May 26, 2009* -
## geometry

hi, can anyone plz help? im asked to work out the gradient of a straight line, which i understand fine. Its which units to use that confuse me. if distance is on the vertical axis and time/days is along the horizontal axis, what will the gradient be

*asked by bertie on May 27, 2007* -
## Physics

A block and tackle with a velocity ratio of 5 is used to raise a mass of 25kg through a vertical distance of 400M at a steady rate.if the effort is equal to 60N,determine (a)distance moved by the effort (b)work done by lifting the load(c)the loss in energy

*asked by Wisdom on February 4, 2015* -
## P.E Plzzz help

I forgot to post these questions in my last post... 11.You think your friend is depressed and may be considering suicide. Which of the following actions should you avoid? A. Tell him how concerned you are about him; you'll probably embarrass him. B. Leave

*asked by Labbayk on October 31, 2015* -
## Social Studies

Which of the following was true of people moving to suburbs and purchasing automobiles? A Women were allowed to drive and thereby gained more freedom. B It was a lifestyle only the wealthy could afford. C Women were left isolated all day as men took the

*asked by Daven on March 9, 2017* -
## social studies

please help. Which of the following was true of people moving to suburbs and purchasing automobiles? A. Women were allowed to drive and thereby gained more freedom. B. It was a lifestyle only the wealthy could afford. C. Women were left isolated all day as

*asked by shakira on March 14, 2019* -
## History

Which accurately describes the Columbian Exchange during the Age of Discovery? The Columbian Exchange was a system of cultural sharing developed by Columbus and the natives on the island of Hispaniola. The Columbian Exchange was the transfer of plants,

*asked by Rylee on December 1, 2017* -
## Math plz help

2. | y+4|

*asked by Gloony90 on October 3, 2017* -
## caculus

ʃ dx/x^4(1/x^2-2)^2 please help i need solution..i got the answer.. answer= 1/6(1-2x^3)=c thanks

*asked by ME on January 23, 2012* -
## Math

What is the. Solution to 89+k=-42? A)k=131 B)k=47 C)k=-47 D)k=-131

*asked by Annon on October 11, 2017* -
## Chemistry

A 8.6 x 10^-3M solution of H3PO4 has a pH=2.30. What is Ka for H3PO4

*asked by Anonymous on March 11, 2010* -
## Biology

Need help with these-- 8. Medicinal uses of plants include all of the following EXCEPT a. cancer treatment b. treatment of cardiac disorders c. decongestant d. albinism treatment D? 9. Two plants that are used to make BOTH paper and cloth are a. bamboo and

*asked by mysterychicken on March 1, 2010* -
## physics (Newton's Laws)

Please help, A cat is stuck in a tree. You are designated with the job to get it out, yet you do not want to climb the tree, because you may get stuck as well. Instead you set up a pulley system. A rope (consider it massless) runs from the seat you sit on

*asked by Kathy on March 17, 2013* -
## physic

A student on a piano stool rotates freely with an angular speed of 3.07 rev/s. The student holds a 1.38 kg mass in each outstretched arm, 0.759 m from the axis of rotation. The combined moment of inertia of the student and the stool, ignoring the two

*asked by Mary on March 25, 2010* -
## Physics

A student on a piano stool rotates freely with an angular speed of 3.07 rev/s. The student holds a 1.38 kg mass in each outstretched arm, 0.759 m from the axis of rotation. The combined moment of inertia of the student and the stool, ignoring the two

*asked by Mackenzie on March 22, 2016* -
## chemistry

Am doing a lab report on the determination of the product of a redox reaction: the reaction of bromate and hydroxylammonium ions. here is the lab Experiment: In this experiment you will determine the equation of a redox reaction by the use of experimental

*asked by khela on October 26, 2010*

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