
Chemistry
When 23.3 mL of 0.14 M HCl are added to 50.0 mL of a 0.16 M solution of a weak monoprotic base, the pH of the solution is 10.50. What is the Kb of the weak base? do u find moles of both and then add the moles for HB+ and then just use the B moles for the
asked by Chris on March 8, 2009 
Physics
A bat emits a sound whose frequency is 83.2 kHz. The speed of sound in air at 20.0 oC is 343 m/s. However, the air temperature is 40.5 oC, so the speed of sound is not 343 m/s. Assume that air behaves like an ideal gas, and find the wavelength of the
asked by Orla on January 15, 2013 
Physics
A projectile is shot from the ground at an angle of 60 degrees with respect to the horizontal, and it lands on the ground 5 seconds later. Find: a. the horizontal component of initial velocity b. the vertical component of initial velocity c. initial speed
asked by nam maurer on November 22, 2011 
trig
angles of elevation to an airplane are measured from the top and the base of a building that is 40 m tall. The angle from the top of the building is 31°, and the angle from the base of the building is 40°. Find the altitude of the airplane. (Round your
asked by Barb on November 28, 2012 
calculus
Suppose that the sales at Borders bookstores went from 68 million dollars in 1990 to 427 million dollars in 1995 . Find an exponential function to model the sales (in millions of dollars) as a function of years,t, since 1990.
asked by amy on January 23, 2014 
math
A solid sphere of radius Xcm is placed in a cylinder of radius 2Xcm and height 2Xcm. The cylinder is then filled with water to the brim and the solid gently withdrawn. Find d volume of d water in d cylinder in cm3
asked by benjieo on May 27, 2014 
math
It takes Bill 24 minutes to type and spell check 10 pages. Find how many pages he can type and spell check in 5.5 hours. Round to the nearest whole number if necessary. A. 55 pages B. 138 pages C. 792 pages D. 229 pages
asked by Anonymous on April 17, 2016 
Chemistry
the reaction is CO + SO3 CO2 + SO2, the rate law for this reaction is rate=k[SO3] and the mechanism is SO3 > SO2 + O CO + O > CO2 Which is the slow step? I have to find catalysts and intermediates and is O both catalyst and intermediate? If it isn't,
asked by Kat on June 5, 2011 
statistics
A marketing research shows that for every 100 flyers distributed to potential customers, 1.2 customers will be captured. If 10000 flyers are being distributed, find a. the probability that 150 customers are captured b. the expected value of this
asked by Anonymous on January 12, 2016 
Algebra II
Among 100 coffee drinkers, 36 said that they preferred their coffee black and the rest did not prefer their coffee black to those who prefer non black coffee. Find a ratio for each of the following and write it as a ratio of integers in lowest terms. I do
asked by Christopher on March 7, 2010 
math
I am trying to solve a problem using Newton's equation, which is (1/2)(9.8)t^2+ vot+ h. The problem says that a car rolls of a 120 foot high cliff. I know how to right the equation for this problem which would be (1/2)(9.8 m/s) t^2 + vot + 37m. I am
asked by Natalie on June 14, 2008 
College Algebra
1.Use completing the square to describe the graph of the following function. Support your answer graphically. f(x) = 2x^2 + 4x + 5 2. Find the vertical, horizontal, and oblique asymptotes, if any, for the following rational function. R(x) = 5x/x+7 The
asked by Kameesha on August 3, 2012 
Geometry
Starla is 5feet 9inches tall. To find the height of a tree,she measured her shadow and the tree's shadow. Her shadow was 8feet long when the trees shadow was 30 feet long. To the nearest foot,how tall is the tree?
asked by Anonymous on May 27, 2010 
Precalculus
"Show that x^6  7x^3  8 = 0 has a quadratic form. Then find the two real roots and the four imaginary roots of this equation." I used synthetic division to get the real roots 2 and 1, but I can't figure out how to get the imaginary roots. I checked
asked by Emily on September 20, 2009 
Pre Calc
Given the sum of all the edges of the rectangular solid at the right is 76cm, the area of all of its faces is 228 cm^2, and its volume is 216 cm^3. Find its height, width and length. [hint Let the height, width and length be the roots of a cubic
asked by Emma M on September 12, 2010 
Physics
A tennis ball initially moves with a velocity of 27.0 m/s horizontally to the right. A tennis racket strikes the ball, giving it a velocity of 27.0 m/s to the left. Treat the collision as elastic and the ball and racket as particles of mass 0.0580 kg and
asked by Physics idiot on December 13, 2015 
inverse
my question was: find f^1 (x). (this is asking me to find the inverse) f(x) = (x2)^2, x > and you answered: If f(x)=(x2)^2 x
asked by kristie on July 13, 2006 
physics
A 53.8kg skater is standing at rest in front of a wall. By pushing against the wall she propels herself backward with a velocity of 1.33 m/s. Her hands are in contact with the wall for 0.960 s. Ignore friction and wind resistance. Find the average force
asked by Tyler on January 17, 2017 
7th grade math
Shelly and Melissa spent Saturday morning making chocolate chip cookies. They counted the cookies and discovered they had made 53 of them. Then Shelly decided to divide the cookies. Since Shelly was five years older than Melissa, it seemed natural for her
asked by Niesha on September 28, 2009 
PHYSICS
super easy (I think) but I must be missing some concept... A race car starts from rest on a circular track. The car increases its speed at a constant rate at as it goes 5.00 times around the track. Find the angle that the total acceleration of the car
asked by Laila on January 6, 2010 
English
Why did the nightly knocking at the temple finally stop in “Old Man of the Temple” by R. K. Narayan? A. The narrator helped the old man find his way to his wife. B. They drove the old man out of town, so he wouldn’t bother the temple anymore. C. The
asked by quick help needed on May 7, 2016 
Physics
A 48.8kg skater is standing at rest in front of a wall. By pushing against the wall she propels herself backward with a velocity of 1.88 m/s. Her hands are in contact with the wall for 0.763 s. Ignore friction and wind resistance. Find the average force
asked by Tim on January 2, 2013 
chemistry
Hi, I am trying to find the pH of a buffer I created and then added NaOH to. This is my data: total volume of solution 34.2 mL [NaOH] before reaction 6.0 [HOAc] before reaction .8 M [OAc] before reaction .4 M [HOAc] after reaction 0 M [OAc] after
asked by anon on April 23, 2016 
Math
A Square shaped animal pen and a pen shaped like an equilateral triangle have an equal perimeters. Find the length of the sides of each pen if the sides of the triangular pen are 16 less than twice a side of the square Pen.
asked by Raquel on February 15, 2016 
Finite Math
A certain virus infects one in every 500 people. A test used to detect the virus in a person is positive 90% of the time if the person has the virus and 10% of the time if the person does not have the virus. Find the probability that a person does not have
asked by Cathy Wilson on December 17, 2016 
geometry
Write a list of steps that are needed to find the measure of angle B. A measures 72 degrees and C measures 113. My answer: A + B + C = 180. 72 + B + (180113) = 180, 72 + B + 67 = 180, B = 180  72  67 = 41 degrees Am I right? TYSM
asked by help on March 29, 2019 
Math
3. A rectangular prism has a width of 92 ft and a volume of 240 ft3. Find the volume of a similar prism with a width of 23 ft. Round to the nearest tenth, if necessary. (1 point) 3.8 ft3 60 ft3 15 ft3 10.4 ft3 Please help me work this out! I'm not sure how
asked by Anon on March 27, 2015 
Geometry
Rays PQ and QR are perpendicular. p;oint S lies in the interior of angle PQR. If angle PQS equals 4+7a and angle SQR equals 9+4a, find the angle PQS and angle SQR. Can you please help me, I don't understand it.
asked by Monique N. on September 27, 2009 
geometry
In the diagram, circle A is tangent to circle C, and segment BE is tangent to circle A. The radius of circle A is 11 meters and the radius of circle C is 8 meters. Find the area of triangle ABE to the nearest square meter.
asked by joe on April 4, 2013 
Physics
You testify as an "expert witness" in a case involving an accident in which car A slid into the rear of car B, which was stopped at a red light along a road headed down a hill. You find that the slope of the hill is theta= 12.0°, that the cars were
asked by ann on February 15, 2013 
Physics
A pond with a flat bottom has a surface area of 820 m^2 and a depth of 2.0m. on a warm day, the surface water is a temperature of 25 deg C, while the bottom of the pond is at 12 deg C. Find the rate at which energy is transferred by conduction from the
asked by R on November 18, 2012 
Calculus 1 Related Rates
Water is discharged from a pipeline at a velocity v(in ft/sec) given by v=1240p^(1/2), where p is the pressure (in psi). I f the water pressure is changing at a rate of 0.406 psi/sec, find the acceleration(dv/dt) of the water when p=33.0 psi. I know the
asked by jahil on November 21, 2010 
Algebra
There were 39,000 desktop publishing jobs in the United States in 2000. It has been projected that there will be 64,000 desktop publishing jobs in 2010. (a) Using the BLS data, find the number of desktop publishing jobs as a linear function of the year.
asked by Kim on October 22, 2014 
Math
The electrical resistance of a wire waves directly as its length & inversely as the square of its diameter if a wire 30m long and 0.75mm in diameter has a resistance of 25ohms , find the length of a wire of the same material whose resistance is 30ohms
asked by Helena on January 29, 2016 
math 9
in a park some people are launching model rockets to find the maximum height,x,the rocket reaches, a person stands 50.0m from the launch sight and measure the angle from the ground to the rocket at its maximum height. if the angle is 36 then the maximum
asked by steph on June 17, 2010 
Physics
A man places a torche on the ground, 10m away from a wall. He sees a shade on the wall and gets a friend to measure the height of the shadow as he walks towards the wall. Here are the results: Distance from torch to man height of shadow 1 20 2 10 3 6.7 4 5
asked by Soph on December 5, 2012 
Math
Find how much money there will be in the account after the given number of years. Principle $8500 Rate 4% Coumpounded quarterly Time 4 yeats A=8500(1+.04/4)raised to 40th power A=8500(1.01)raised to 40th power I am stuck here, how do you raise to the 40th
asked by Shay on August 27, 2011 
Maths
Sue,Martin and Lucy have £1180 in the bank shared between them in the ratio 16:23:20. Marvin takes out £100 and Lucy puts some money into the bank.Their total money is now in the ratio 8:9:12.How much more money Lucy put into the bank? Could somebody
asked by Damian Donarski on March 18, 2015 
To Aly
You have posted the identical post several times, but obviously did not take the time to read the responses you have received. Please scroll down and find your earlier posts  and read the responses. Your posts are blocked for the time being, to give you
asked by Writeacher on November 14, 2010 
math
2/3x+5/3x=14 7\6x=14 then multiply a4 my 6\7 what is the circumferenceof a satellite dish which has a diameter of 21m you do 2 times pie and radius since you have the diameter then its 21 times pie . for futher info if your trying to find the area then you
asked by Anonymous on April 24, 2007 
Chemistry
Consider the reaction: CO(g) + H2O (g) CO2(g)+H2(g) which of the following initial composition will NOT achieve equlibrium? a) 0.25 mol H2, 0.35 mol CO2, and 0.25 mol CO b) 0.25 mol CO, 0.75 mol H2O c) 1.0 mol of CO2 and 0.50 mol H2 d) 0.85 mol CO and 0.25
asked by Ania on November 9, 2012 
Grammar
I don't quite understand this one; choose the answer choice that contains an illogical comparison: A.The architect's plan was more expensive than the company had expected. B.These strawberries are the biggest ones we've grown. C.He's got more cats than
asked by mysterychicken on May 14, 2009 
Math/Dosage Calculations
Hey, can someone please check my work for me? I've done this over and over but cannot find my mistake. Am I just supposed to round??? Calculate intake in mL, assume a glass is 8 oz: 6oz. Jello 5oz of Tomato Soup 1/4qt Iced Tea 1/2 glass of water The answer
asked by Anonymous on June 10, 2016 
math 116
I am taking math 116 , I am to find the solution to the problem 9x3y=68 and 2x+y=18 and to give an ordered pair. Now, that you have it where you take 9x from both sides, or is it 3y? My question is when you just have y do you count that as one(y) , I
asked by dedee on August 1, 2009 
Chemsitry
Nitrogen dioxide, a pollutant in the atmosphere, can combine with water to from nitric acid. One of the possible reactions is shown below. Calculate ∆G0 and Kp for this reaction at 25oC and comment of on the spontaneity of the reaction (MUST plot the
asked by Yasemine on April 19, 2013 
Chemistry
Nitrogen dioxide, a pollutant in the atmosphere, can combine with water to from nitric acid. One of the possible reactions is shown below. Calculate ∆G0 and Kp for this reaction at 25oC and comment of on the spontaneity of the reaction (MUST plot the
asked by Yasemine on April 18, 2013 
Trigonometry
I don't understand how I'm supposed set the problem up or what theta is... Use the given function value(s), and trigonometric identities (including the cofunction identities), to find the indicated trigonometric functions. sec theta = 5, tan theta 2 *
asked by Chris on April 23, 2009 
math
An insurance sales representative selects three policies to review.the group of policies he can select from contains eight life policies,five automobile policies and two homeowner's policies.find the probability of selecting: I.all life policies. II.both
asked by Bravo on March 27, 2016 
Resources For Educating Young Children, Part 1
I have a few more questions to ask they are 1. Mike becomes angry when he can’t solve a mathematical problem, and slams his book down on the desk. Since his behaviour is disruptive to his classmates, you wish to devise a scale by which you can gauge the
asked by beth on July 8, 2011 
Statistics PLEASE help
I need help for a physics error analysis assignment and I have no background understanding whatsoever of statistics since I've never taken it and it all seems so foreign to me without any teaching. Can someone please help me with these questions? 1) One
asked by Sam on October 20, 2008 
physics
A sample of gas at P = 1123 Pa, V = 1.41 L, and T = 291 K is confined in a cylinder a) Find the new pressure if the volume is reduced to half of the original volume at the same temperature. b) If the temperature is raised to 391 K in the process of part
asked by maria on December 27, 2011 
Entrepreneurship
Who are two enterpreneur in Accokeek MD. Where can i find a website with a list of enterprener in a certain city.. This site has a list of small businesses in Accokeek, MD. http://www.accokeekmd.com/businesses.html I searched Google for Accokeek and
asked by Bryan on September 26, 2006 
math
Using the table (ADBC)= 8 (DACB)=5 (BADC)=3 (BDCA)=1 (DCAB)=2 (it is supposed to be a table but the table won't paste correctly). Deter mine: a) deter mine the winner using the Borda count b) deter mine the winner using the Hare method? What round did you
asked by jason on November 20, 2008 
Precalculus
The question(s) are as follows: Given: f(x) = 3cos(3x+π)  4 Find: a) the inverse of F(x) b) the domain and range of F(x) c) the domain and range of F 1(x) I got cos1[(x4)/9]  π = y for the inverse, although I'm not sure I did the problem right (I
asked by Mary on November 11, 2012 
math
Find the Riemann sum associated with f(x)=4x^2+2, n=3 and the partition xsub0=2 xsub1=1 xsub2=2 xsub3=4 of [2,4] (a) when xsubk is the right endpoint of [xsubk1, xsubk] . (b) when when xsubk is the midpoint of [xsubk1, xsubk] please help. i thought
asked by amanda on November 28, 2006 
Physics
In the figure below, a block of mass m = 14 kg is released from rest on a frictionless incline angled of angle θ = 30°. Below the block is a spring that can be compressed 2.0 cm by a force of 270 N. The block momentarily stops when it compresses the
asked by Anonymous on March 25, 2015 
science
A small mass m swings in a horizontal circle of radius r at the end of a string of length Li and negligible mass, which makes an angle i with the vertical. The string is slowly shortened (for example by pulling it through a hole in its support) until the
asked by Hasibul on November 26, 2013 
Physics
A mass is suspended from a vertical spring and the system is allowed to come to rest. When the mass is now pulled down a distance of 76mm and released, the time taken for 25 oscillations is 23s. Find the displacement of the mass from its rest position 0.6s
asked by Amy on December 30, 2012 
Physics
I was wondering if you could clarify this question. How much thermal energy is needed to change 100 g of ice at 20 degrees celsius into steam at 110 degrees celsius? Q = mLv (Lv = Specific latent heat of vapourization) I can't find the Lv for ice. Is this
asked by JavaUtility on March 1, 2016 
Civics @ Ms. Sue
Which of the following businesses would prefer a strong U.S. dollar to a weak one? a U.S. company that exports cars to Mexico a French company that imports clothing from the United States a U.S. company that imports bananas from Costa Rica an Indian
asked by Anonymous JAK on May 21, 2016 
Maths Trigonometry
4. A,B and C are points on a horizontal plane. A is 75 m from C on a bearing of 210 degrees and the bearing of B from C is 120 degrees. The bearing of B from A is 075 degrees. From A the angle of elevation of the top T of a vertical towel at C is 42
asked by Jack on March 3, 2012 
maths for business Help!!!
Jacson purchased a house for Birr 50,000. He made an amount of down payment and pay monthly Birr 600 to retire the mortage for 20 years at annual interest rate of 24% compounded monthly. Find mortage down payment interest charged percentage of down payment
asked by james on June 10, 2017 
Statistics
Scores on the SAT form a normal distribution with u=500 and o=100. a. You are trying to qualify for a scholarship and find out that you need to have a higher score than at least 75% of the students. What score will you need? b. What is the minimum score
asked by Amaya on December 14, 2015 
physics
Highspeed stroboscopic photographs show that the head of a 208 g golf club is trav eling at 27.9 m/s just before it strikes a 45.9 g golf ball at rest on a tee. After the collision, the club head travels (in the same direction) at 20.1 m/s. Find the
asked by redwolf on June 24, 2013 
Math
20.Proms earned 82 dollars last week.She earned 6 dollars each hour and received a bonus of 10 dollars for exceptional work.Which equation can be used to find h the number of hours Proma worked last week A.6h+10=82 B.6h10=82 C.10h+6=82 D.10h6=82 A An
asked by Jerald on March 23, 2013 
Probability (PreCalculus)
A class is given a list of eight study problems from which five will be part of an upcoming exam. If a given student knows how to solve six of these problems, find the probability that the student will be able to answer: (a) all five questions on the exam.
asked by Hailey on March 25, 2010 
physics
A block of mass m is pushed along a horizontal table by a force f=70 N at an angle 55 degrees with the horizontal. Yhe coefficient of kinetic friction is 0.3 Find the normal force. My work: I know that there is 3 forces present: force of gravity, normal
asked by Mike on October 20, 2014 
math
1. Consider the function f(x) = x3 + 7x2 + 2x  40 . a. Find the possible rational roots of f(x) = 0. b. Use synthetic division to divide f(x) by x  2. Show all your work. Use your answer to explain whether or not x – 2 is a factor of f(x). c. Factor
asked by Maddie on June 6, 2011 
algebra
Problem Two: 5/9 + (2/9)x = 25/7 + (6/7)x – 2/3 Multiply figures inside parentheses 5/9 + (1 x 2/9x) = 25/7 + (1 x 6/7x) – 2/3 Collect like signs 5/9 + 2/9(6/7x) = 25/7 + (2/3) Multiply like signs 2 x 6 9 7 Reduce like numbers 2 x 2 = 4x 3 7 21x
asked by aria on April 28, 2011 
Physics
A sled is being held at rest on a slope that makes an angle (theta) with the horizontal. After the sled is released, it slides a distance (d1) down the slope and then covers the distance (d2) along the horizontal terrain before stopping. Find the
asked by Mary on October 13, 2011 
Chemistry
1. If you became confused and did not know whether a flask contains an aqueous layer or an organic layer, how would you find out which it is? 2. Write a balanced reaction for the reaction of Aspirin is precipitated from the basic aqueous solution by the
asked by Cassie on September 17, 2012 
chemistry
I posted a question similar to this one a few days ago and someone helped me with it. but now im on a similar one and i did the same thing to find the answer but it was wrong. what am i doing wrong? An equilibrium mixture of the following reaction was
asked by Rebekah on April 17, 2011 
AP Chemistry BornHaber Cycle?
When using the BornHaber Cycle for Na2S, do I double the ionization energy of Na since there are two Na ions for every S ion in Na2S? Also, the problem asked me to find the change in energy for S (g) + e => S2 (g). Assuming that you do double the
asked by Becca on October 17, 2010 
Algebra
The cost of driving a car includes both fixed ans mileage costs. Assume that it costs $152.20 per month for insurance and car payments ans $0.22 per mile for gasoline oil and routine maintenance. (a) Find value m and b so that ymx=b modeks the monthly
asked by Ruth on March 9, 2013 
Physics
A heavy concrete panel is being lifted into position in a building by means of a crane (see figure below). The tension of 2.52 104 N in the supporting cable produces a torque with respect to point O. (Let L = 41.0 m.) (a) Does this torque tend to rotate
asked by Velma on July 25, 2012 
physics
A long, thin straight wire with linear charge density λ runs down the center of a thin, hollow metal cylinder of radius R. The cylinder has a net linear charge density 2λ. Assume λ is positive. Find expressions for the electric field at the following
asked by David D. on September 14, 2010 
Calc One
The function C(m) = .41m^2 + 6.7m  44/ .7m represents Miles Traveled per lb. of CO 2 released as a function of speed(in MPH) for a hyundai Sontana. the domain of this function is [10,90]. A) calculate C'(m) B)find the critical points of C(m). C)Where
asked by Liz on November 6, 2016 
algebra
Company makes tire rims. Estimates the the profit, P, of selling x tire rims is given by: P= 0.01x^2 + 8x + 1500 Plugging in 1000 for P and solving, I get 400. Is that correct? b) find the number of rims that must be sold to maximize profit. plugging in
asked by Nabil on October 11, 2011 
no subject
Ok first of all Ms.sue if cheaters are banned from posting then why do people constantly post answers on here to give others answer???? Yall on this website make it seem like yall have no home training at all. And on behalf of them krystina im sorry about
asked by Mykeal Hurst on February 9, 2017 
Ｓｔａｔｉｓｔｉｃｓ
You are playing a board game in which severity of a plenty is determined by rolling three dice and adding spots on the upface. The dice are all balanced so that each face is equally likely, and the three dice fall independently. If X1, X2, and X3 are the
asked by ＭＡＩ on December 15, 2008 
physics
A cue ball initially moving at 2.6 m/s strikes a stationary eight ball of the same size and mass. After the collision, the cue ball’s ﬁnal speed is 1.3 m/s.Find the cue ball’s angle θ with respect to its original line of motion. Consider this to be
asked by Anonymous on February 9, 2014 
Physics Gauss
A long, thin straight wire with linear charge density λ runs down the center of a thin, hollow metal cylinder of radius R. The cylinder has a net linear charge density 2λ. Assume λ is positive. Find expressions for the electric field at the following
asked by David D. on September 13, 2010 
Physics
Two blocks lie on a triangle as shown in the figure. Block m has a mass of 5 kg and block P has a mass of 14 kg. Assume the inclines and pulleys are frictionless find the tension in the string. They lie with the string resting on the peak of a 110 degree
asked by Adam on June 15, 2017 
Chemistry
When you placed transition metals on a scale to find their mass, why are the values negative or positive. For example these compounds Cobalt (II) chloride Copper (II) chloride Iron (II) chloride Manganese (II) chloride Nickel (II) chloride Zinc chloride
asked by Cassidy on January 9, 2015 
Physics
I don't understand this at all! use the position equation s=16t^2 +v0t+s0 to write a function that represents the situation. Find the average rate of change from t1 to t2. a) An object is thrown upward from a height of 6 feet at a velocity of 64 feet per
asked by Julia on October 19, 2015 
physics
A small mass m swings in a horizontal circle of radius r at the end of a string of length Li and negligible mass, which makes an angle i with the vertical. The string is slowly shortened (for example by pulling it through a hole in its support) until the
asked by Anonymous on November 26, 2013 
math
14.what value of n will result in a mean if 31 15.what value of n will result in a median of 23 15.what value of a will result in a range of 84 14,46,19,10,39,22,24,77,n Refresh your memory about the defnition of median, mode and range of a set of numbers.
asked by alice on March 4, 2007 
math
You are given the following: there are 27 pieces of data mean is 60 standard deviation is 25 You realize that one of the pieces of data is inputted wrong..... it was a 25, but it is suppose to be 52.... find the actual mean and standard deviation for the
asked by jj on October 9, 2006 
math
a rectangular garden with an area of 2112 square feet is to be located next to a barn with fencing on three sides and the barn acting as the fourth side.Write a function that gives the length of fencing needed if the length of the side parallel to the barn
asked by Anonymous on April 23, 2013 
Language  interview for eraser
I'm doing a big report things on the invention of the eraser and some of the first erasers. All that fun stuff... anyway my teacher said that we have to interview some one with about 10 questions about erasers. It doesn't have to be someone that knows
asked by Nicky on April 17, 2009 
Physics
A Ferris wheel with radius 9.8 m rotates at a constant rate, completing one revolution every 36.6 s. Suppose the Ferris wheel begins to decelerate at the rate of 0.227 rad/s2 when a passenger is at the top of the wheel. Find the magnitude and direction of
asked by Sheva on November 17, 2010 
Physics
A preciousstone dealer wishes to find the specific heat capacity of a 0.036kg gemstone. The specimen is heated to 95.0°C and then placed in a 0.17kg copper vessel that contains 0.086 kg of water at equilibrium at 25.0°C. The loss of heat to the
asked by Jay on January 18, 2010 
Physics
A Ferris wheel with radius 9.8 m rotates at a constant rate, completing one revolution every 36.6 s. Suppose the Ferris wheel begins to decelerate at the rate of 0.227 rad/s2 when a passenger is at the top of the wheel. Find the magnitude and direction of
asked by Briana on November 18, 2010 
physics
You stand on the end of a diving board and bounce to set it into oscillation. You find a maximum response in terms of the amplitude of oscillation of the end of the board when you bounce at frequency f. You now move to the middle of the board and repeat
asked by lilly on December 2, 2012 
phys
a 5 kg concrete block accelerates down a 34 degree slope at 4.2m/s^2. Find the coefficient of friction between the block and the slope. The net force along the slope that produces the acceleration is F = M g sin 34  u M g cos 34 = M a where u is the
asked by slien on June 19, 2006 
Physics
The Apollo spacecrafts were launched toward the moon using the Saturn rocket, the most powerful rocket available. Each rocket had five engines producing a total of 3.34 x 10 to the 7thX of force to launch the 2.77 x 10 to the 6 kg spacecraft toward the
asked by Lupe on December 3, 2013 
fibers and fabrics
Which one of the following is the most complete and accurate definition of fiber? A. A stringy substance from plants B. The hair of an animal C. Manmade threads and yarns D. Basic raw material from which fabric is made 2. An example of a natural fiber is
asked by marissa on December 2, 2009 
Physics
A force of 112 N acts on 35 kg box which moves at a steady speed across the floor. The force is directed 40 degrees above the ground. How to state Newton's second law using x components and y components? x: Fa(cos40) Ff=ma and y: Fa(sin40)+FnFg=0? How
asked by Alice on March 25, 2015 
physical geography
How many time zones extend across Russia, from Kaliningrad to the Bering Strait? What is the central meridian for: aPacific standard time (PST)? bEastern Standard time (EST)? cThe irregular time zone that includes India? dThe time zone that includes
asked by mike on January 27, 2007 
Algebra
Which equation could be used to find the dimensions of a room that has a length of 8 feet longer than the width, x, and has an area of 240 square feet? (A) x squared  8x + 240 = 0 (B) 2x(2x8x+16)=240 (C) x squared + 8x + 240 = 0 (D) x squared + 8x  240
asked by Anonymous on May 4, 2008
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