
physics
A piece of gold wire is used to form a circular loop of radius 12.3 cm. The wire has a crosssectional area of 11.1 mm^2. Points A and B are 90.0° apart. Find the resistance between points A and B.
asked by Eric on February 8, 2011 
mathssurface area
A cone 7dm high and 6 dm in diameter is placed on the ground. Sand is poured over it until conical heap 21 dm high and 33 dm circumference at the bottom is formed. Find how many m^3 of sand is there?
asked by anoynomous on March 18, 2013 
Physics
A 9 kg hanging weight is connected by a string over a pulley to a 5 kg block sliding on a flat table. If the coefficient of sliding friction is 0.2, find the tension in the string.
asked by Lex on April 15, 2013 
math
the cost of banana is Re.1 more than that of an orange. Mr asad purchased 12 bananas and 20 oranges . if he paid Rs.108 to the fruit saller, find the price of a banana and orange.
asked by fazalamin on November 30, 2016 
algebra
a steamboat travels 9 miles up a river in 3 hours and returns the same distance down the river in 2 hours. find the speed of the boat in still water and the rate of the current.
asked by erika on February 4, 2012 
Math
I'm having some trouble with this question: Find a value(s) that makes the expression y^2  16/ y^2  16 undefined. I know that for an expression to be undefined that the denominator must be 0, so I thought 8^2, but that would just result in 16 + 16. I'm
asked by Andre on April 15, 2019 
Calculus
Suppose the revenue from producing and selling x units of a given product is given by R(x)=10x0.02x^2 a) Find the number of units produced if the revenue is $800. I really need help with this, I don't know what to do?
asked by Casey on February 3, 2012 
Algebra
The temperature y (in degrees Fahrenheit) after t months can be modeled by the function y=3t^2+18t+53 where 1
asked by Kylet davis on March 2, 2016 
Precalculus
find the equation of the cubic equation show graph passes through the points (3,0) and (1,4) and is tangent to the axis at the origin??? I honestly cannot figure this out and can you explain the graph to me too?
asked by Sam on October 23, 2012 
maths
A vendor bought 150 breadfruits at $2 each 20 of the breadfruits were bruised and could not be sold.She sold 30 of the remainder at $2 each and the rest at $1.80 each.Find whether he made a profit or loss and the amount.
asked by yannica on June 18, 2013 
math
triangle a and b are similar the ratio of a side of triangle b to a corresponding sid of triagle a is 5.3 the lengths of the sides of triangle a a are 18ft, 27ft and 30ft find the perimeter of triangle b
asked by michael on March 28, 2011 
statistics
suppose you roll two number cubes and pick a letter of the alphabet at random. find the probability you will roll two odd numbers and pick one of the letters k, l, or m.
asked by logan on June 4, 2014 
Algebra
The temperature y (in degrees Fahrenheit) after t months can be modeled by the function y=3t^2+18t+53 where 1
asked by Kylet davis on March 4, 2016 
Algebra
The temperature y (in degrees Fahrenheit) after t months can be modeled by the function y=3t^2+18t+53 where 1
asked by Kylet davis on March 3, 2016 
chemistry
A 10L flask at 298K contains a gaseous mixture of CO AND CO2 at a total pressure of 4atm.if 0.20 mole OF CO is present ;find the partial pressure of CO and that of CO2
asked by Nanayaw on November 9, 2015 
maths
find the gradient of the tangent to the parabola y=4xx^2 at (0,0) hence calculate the size of the angle between the line y=x and this tangent. (as i cant show you the diagram all that it shows is the line going through (0,0) and having one point of
asked by mr maths on January 1, 2010 
Physics
The following four lenses are placed together in close contact. Find the focal length of the combination. Lens 1 F'= +200mm Lens 2 F'= 125mm Lens 3 F'= 400mm Lens 4 F'= +142.9mm
asked by Help please on October 23, 2012 
trigo
In a right tringle,/_ABC has a value of 37 degree while its opposite side is equal to 5,where angle c=90 degree find: a.) Remaining sides of the triangle b.) /_ABC using any trigonometry functions
asked by William john on July 12, 2011 
electric force/field
Three point charges, A = 2.2 µC, B = 7.5 µC, and C = 3.9 µC, are located at the corners of an equilateral triangle . Find the magnitude and direction of the electric field at the position of the 2.2 µC charge. magnitude = . N/C direction =
asked by physics on January 23, 2012 
math
Find the values of the trigonometric function cot 8/17 sin: sec: tan: cot: I know you use a Pythagorean Identity, sin^2t + cos^2t=1 I got 64/289 for the first one for example and it was wrong.
asked by john on October 26, 2015 
science
I need help to find the answer to this problem: The formula for aluminum sulfate is Al2(SO4)3. Figure the molar mass of aluminum sulfate to the nearest gram?
asked by wizzkid01 on December 16, 2008 
algebra
Find the accumulated value of an investment of $10,000 for 3 years at an interest rate of 6% if the money is a)compounded seiannually,b)compounded quarterly, c) compounded monthly, d) compounded continually
asked by Betty on February 1, 2012 
Calculus
I have the equation: cos x  x = f(x) I am told to find the relative extrema. I am also told to use the Second Derivative Test where applicable. My question is how do I solve this problem, and how do I know when to use the Second Deriv test? Thanks!
asked by Phil on November 14, 2007 
algebra
If the lengths of a pair of opposite sides of a square were tripled and the other pair were each increased by 7 cm,the new figure would be rectangle with a perimeter 96 cm find the dimensions of the original square
asked by uma on April 9, 2016 
Math
If someone earns $960 interest over 4 year period on a $6,000 investment, how do I solve this to find the percentage of interest per year. I know it is 4%, I just can't figure out how to show the math.
asked by Anonymous on October 15, 2009 
Algebra
The temperature y (in degrees Fahrenheit) after t months can be modeled by the function y=3t^2+18t+53 where 1
asked by Kylet davis on March 2, 2016 
elementary math for teachers
Numbers is a game where you bet $1 on any threedigit number from 000 to 999. If your number comes up, you get $600.00, otherwise you lose the $1. Find your expected winnings if all numbers are equally likely to come up.
asked by jen on October 15, 2009 
algebra 1
mindy is building a patio that is in a shape of a square. this will cover 56 square yards. find the length of a side of the patio to the nearest tenth of a yard ?
asked by Anonymous on September 8, 2012 
Physics
An elevator is moving at 1.1 m/s as it approaches its destination floor from below. When the elevator is a distance h from its destination, it accelerates with a = −0.55 m/s2,where the negative sign indicates a downward vertical direction. Find h.
asked by Anne on September 21, 2012 
math
the external dimensions of a closed box are 8cm by 5cm by 4cm. given that the thickness of the wood of which it is made is 0.5cm, find the volume of the wood used to make it.
asked by sabrina on October 26, 2015 
Physics
A particle moves in a straight line so that its position (x cm) from a fixed point O at time (t seconds) is given by x= t^36t^215t5 Find the average speed of the particle in the first 7 seconds
asked by Jane on September 8, 2012 
Math
How do you find the value of x for a regular pentagon with its sides extended. The only information that they give is X to the 6th power inside of the circle at the top of the pentagon with an extended side.
asked by Arlena on November 27, 2010 
Mensuration
A verandah 1.25m wide is constructed all along the outside of a room 5.5m long and 4m wide. Find the cost of cementing the floor of this verandah at the rate of ₹15 per sqare metre.
asked by Sunil on February 24, 2016 
History
Hi, i am doing a presentation on women's rights, particularily focusing on Nellie McClung, could you help me find some good sites about her? Also, do you know of any song that involve women's rights/power.
asked by Shaz on May 29, 2008 
Helpplease.civics
hi! I'm doing research about the Muslim rebellion in the southern Philippines.. but the websites I keep finding I don't understand the information. Could anyone help me find websites which are easy to understand? thanks. I have to know the who, when,
asked by Jen on June 12, 2008 
Probabilities
Need some help please! A box contains four good light bulbs and three defective ones. Bulbs are selected one at a time (without replacement). Find the probability that the second defective bulb is found on the third selection.
asked by Bianca T on June 10, 2015 
math
An oil tank is 3m long, 3 m wide and 2 m high, when it is full of coconut oil specific gravity of 0.90, find the downward force at the bottom of the tank.
asked by mmmm on June 13, 2015 
Algebra Readiness
Sally bakes two cakes, a square and a circle. The length of the side of the square cake is 8 inches. Find the area and the perimeter of the cake heart.
asked by Katy on February 16, 2014 
math
A concert promoter wants to give away 240 tickets to 3 radio stations. Which basic math fact can he use to find 240 image 3 using mental math?
asked by nathalie on February 6, 2014 
calculus
how do not understand how to find a deriviative of this function?Do i use chain rule and product rule? r= the square root of (theta*sin*theta) No one has answered this question yet.
asked by carolin on October 18, 2009 
Physics
a boat leaves shore and travels 30km east and then 15km 50 degree South of east Find the resultant the boats resultant displacement?
asked by Earl on June 18, 2014 
mathematics
Find I. Choose the correct answer. Amount Financed (m) = $1,400 Number of Payments per year (y) = 12 Number of Payments (n) = 24 Total Interest (c) = $200.50
asked by Anonymous on June 16, 2015 
PreCalc
sin(2θ)=1/2 Find all solutions in the interval [0, 2π). (Enter your answers as a commaseparated list.) k = any integer What I have so far: pi/12 + kpi, 5pi/12 + kpi However, I do not know how to solve for the interval. Please help, thank you!
asked by Amber on March 7, 2019 
trig
An airplane has air speed of 540 mph and a heading of 50*. The wind is blowing from the north at 27 mph. Find the plane's ground speed and course direction.
asked by Marlo on April 10, 2014 
Current Events
Hi everyone!! I need a current event. Current events are where you write a summary on a article. But I can't find any good sites. I'm looking for sites because I don't wanna buy a newspaper with nothing I want. Can I please have help????
asked by Erin on November 6, 2010 
algebra
math question: you want to mat and frame a 5x 7 photograph. The perimeter of the outside of the mat is 60 inches. the mat is twice as wide at the top and the bottom as it is on the sides. Find the dimensions of the mat
asked by carolina on August 24, 2012 
Math
Please help solve these word problem .gopal pours 4/9 of milk from a jug equally into 4 cups.find the amount of milk,in litres, (a)in each cup. (b)in 3 cups.
asked by Tabassum sultana on January 24, 2019 
Math
A car moves along a straight road in such a way that its velocity (in feet per second) at any time t (in seconds) is given by v(x) = 3x sqrt(9x^2) on an interval of 0,3. Find the distance traveled by the car in 3 seconds.
asked by Peter on April 16, 2019 
Algebra Please Help
Find the sum of integers c for all triples of integers (a,b,c),a≤b≤c, that satisfy the system of equations a^2−bc=91 b^2−ac=91 c^2−ab=91 Details and assumptions If a number c appears in several different triples (a,b,c), it must be counted with
asked by Mathslover on May 13, 2013 
Maths
An iron pipe of internal diameter 2.8 cm and uniform thickness 1 mm is melted and a solid cylindrical rod of the same length is formed. Find the diameter of the rod.
asked by Sudan Maharjan on July 19, 2018 
Logs
The number of years n required for an investment at interest rate r to double in value must satisfy (1+r)^n = 2. Using the approximation ln(1+r)=r valid for small r, find the number years n as a function of r.
asked by Linda on April 21, 2008 
math
If the perimeter of a parallelogram is 140 m, the distance between a pair of opposite sides is 7 meters and its area is 210 sq m, find the length of two adjacent sides of the parallelogram.
asked by Krish on September 3, 2011 
math
A right triangle is drawn on a coordinate plane. Its base is the line segment between (2, 2) and (9, 2). The hypotenuse is a line segment that begins at (2, 2) and has slope 1.25. Find the coordinates of the third point.
asked by Sarah on January 20, 2016 
math
Numbers is a game where you bet $1 on any threedigit number from 000 to 999. If your number comes up, you get $600.00, otherwise you lose the $1. Find your expected winnings if all numbers are equally likely to come up.
asked by ann on October 11, 2009 
PreCal
evaluate the trigonometric functions by memory or by constructing appropriate triangles for the given special angles. a) csc 30 degrees b) sin pi/4 = sqrt2 / 2 I just do not know how to find csc 30 degrees.
asked by Abbey on March 22, 2010 
Physics
A stone is thrown in the air with an initial velocity of 50 m/s at 37 degrees to the horizontal. Find the total time the ball is in the air. What would be the total distance traveled?
asked by Anonymous on March 23, 2014 
English
River Traffic The great rivers roll on their way to the sea. And young men and boys ride on flatbottomed boats That carry great cargoes of lumber and wheat To farms and the markets in blistering heat In America’s South where the boats sell their loads.
asked by JJJAYWOW on April 16, 2013 
Mechanics
Two objects with masses 5.60 and 2.40 hang 0.600m above the floor from the ends of a cord 8.00m long passing over a frictionless pulley. Both objects start from rest.Find the maximum height reached by the 2.40kg object
asked by Sarah on April 1, 2013 
Mechanics
Two objects with masses 5.60 and 2.40 hang 0.600m above the floor from the ends of a cord 8.00m long passing over a frictionless pulley. Both objects start from rest.Find the maximum height reached by the 2.40kg object
asked by Sarah on March 31, 2013 
physics
An 8.0 kg puck floating on an air table is travelling east at 15 cm/s. Coming the other way at 25 cm/s is a 2.0 kg puck on which is affixed a wad of bubble gum. The two slam headon into each other and stick together. Find their velocity after the impact.
asked by myra on May 27, 2012 
Physics
A 0.20 m uniform bar has a mass of 0.75 kg and is released from rest in the vertical position, as the drawing shows. The spring is initially unstrained and has a spring constant of 25.0 N/m. Find the tangential speed with which end A strikes the horizontal
asked by Samantha Kaur on June 9, 2011 
Physics
Three charges are arranged as shown in the figure below. Find the magnitude and direction of the electrostatic force on the charge q = 5.12 nC at the origin. (Let r12 = 0.320 m.) I did the math and for mag i got 1.41E5 N.for the direction i seem to keep
asked by Maria on February 1, 2018 
Physics
A 0.20 m uniform bar has a mass of 0.75 kg and is released from rest in the vertical position, as the drawing shows. The spring is initially unstrained and has a spring constant of 25.0 N/m. Find the tangential speed with which end A strikes the horizontal
asked by Samantha Kaur on June 9, 2011 
us history
Sara, Sorry to bother you again, I read the websites you provided for me and I do thank you very much. I decided to do the interview on the coal mine workers, but where do I find the list of coal mines established in the 19th century that associates with
asked by Lauri on March 31, 2010 
math (check my answer?)
Find the equation of a sine function that has a vertical displacement 2 units down, a horizontal phase shift 60 degrees to the right, a period of 30 degrees, a reflection in the yaxis and an amplitude of 3. My attempt at an answer: Y = 3 sin (30x 60) 2
asked by stephy on January 22, 2011 
social studies
Which of the following is not an economic reason for European Exploration? A) The discovery of fine goods in the East B) To spread Christianity throughout the world. C) To find better trade routes to the East. D) To set up colonies to encourage
asked by anonymous on October 13, 2009 
physics
A stone is attached to the end of an elastic string and whirled round in a circle path of radius 80cm if the stone makes 9 complete revolution in 3 seconds .find its angular and linear velocities during this period
asked by martins on October 22, 2017 
Programming & Algorithm
(1) How to design algorithms to implement the stack operations. (2) Write a program to multiply any two matrices. (Using Basic) and finally, (3) Consider the algebraic expression E=(2x+y)(5ab)^3. Draw the tree T which correspond to the expression E and
asked by Max 2 on October 10, 2009 
Physics
Bob runs a marathon (26 miles) in 4 hrs. Note 1609 is 1 mile. I found the average speed miles/hour which is equal to 6.5 mi/hr. I need to find meters/second? So 1609m/mi * 6.5mi/hr * 1hr/3600sec = ??m/s correct?
asked by Jennifer on September 13, 2006 
algebra
Solve the system by graphing. x + y = 4 –x + y = 2 confused where do i start do i need to solve for x and find points I'll bet that after doing a few like this you would be able to do this one in your head. just add then up. The x's will cancel and you
asked by TAMMY on April 27, 2007 
geometry
I am having a hard time determining what formula I need to solve the following: On a hexagonal window the height is 1.3m. Find the width.Do I use the pythagreom theorem (but I have only one known number) or do I use the formula 6(1/2as)? I'm confused. The
asked by Cendrillion on August 19, 2010 
Science
Any help on this I have to go to bed!!!! Help!!!! I can't find these answers anywhere and I don't have a science text book. 1. A tough outer covering that lies right outside the cel membrane. 2. A twisted membrane with portions that break off to form
asked by Eryns on December 8, 2009 
statistics
LSAT test scores are normally distributed with a mean of 510 and a standard deviation of 110. Find the probability that a randomly chosen testtaker will score between 300 and 580. (Round your answer to four decimal places.)
asked by Anonymous on November 21, 2012 
math (SIMPLE INTEREST)
4.the amount in an account which was opened 180 days ago is RM205. iF the account was offered a simple interest of 5 percent per annum, find the original principal. 5.how long does it take a sum of money to double itself in four years ?
asked by fizz on April 20, 2014 
Biology URGENT
What are Chroobacteria, Hormogoneae, and cleeobacteria? Spelling suggestions are welcome. Chromobacteria, Hormogonia are the spellings. I don't know about the others. Thank you. Do you know where i could find some info on them? wikpedia Thanks but no
asked by Amanda on October 26, 2006 
physics
6 electric lamps connected in parallel at 100 volt explain how they are connected to operate at 200 volts without spoiling them.find the total current intensity in the circuit if the resistance of each lamp 240 Ohm
asked by amal on February 27, 2012 
Physics
A 0.20 m uniform bar has a mass of 0.75 kg and is released from rest in the vertical position, as the drawing shows. The spring is initially unstrained and has a spring constant of . Find the tangential speed with which end A strikes the horizontal
asked by Samantha Kaur on June 9, 2011 
Physics
A 0.20 m uniform bar has a mass of 0.75 kg and is released from rest in the vertical position, as the drawing shows. The spring is initially unstrained and has a spring constant of . Find the tangential speed with which end A strikes the horizontal
asked by Samantha Kaur on June 9, 2011 
physics
6 electric lamps connected in parallel at 100 volt explain how they are connected to operate at 200 volts without spoiling them.find the total current intensity in the circuit if the resistance of each lamp 240 Ohm
asked by amal on February 27, 2012 
science
I need to find a thin layer of ice that has condensed? go north :) or... Put 1/3 cup of hot water in the freezer with a piece of plastic over it. The warm moist air will rise and condense on the plastic lid and freeze there.
asked by albia on March 14, 2007 
Calc
Express the limit as a definite integral on the given interval. Use Riemright and evaluate the sum by hand. lim n> infinity sigma with n on top and i=1 on the bottom [4  3(xi*)^2 + 6(xi*)^5]delta x, [0,2] Please help. I am really confused. To find delta
asked by Chelsea on January 22, 2011 
math
A 100 foot vertical tower is to be erected on a side of a hill that makes a 6 degree angle with the horizontal. Find the length of each of the two guy wires that will be anchored 75 feet uphill and downhill from the base of the tower.
asked by Ash on February 2, 2011 
PHYSICS
A copper (shear modulus 4.2 x 1010 N/m2) cube, 0.248 m on a side, is subjected to two shearing forces, each of magnitude F = 3.84 x 10 6 N (see the drawing). Find the angle (in degrees), which is one measure of how the shape of the block has been altered
asked by Anonymous on November 4, 2015 
Math
A 100 foot vertical tower is to be erected on a side of a hill that makes a 6 degree angle with the horizontal. Find the length of each of the two guy wires that will be anchored 75 feet uphill and downhill from the base of the tower.
asked by Ash on February 2, 2011 
Physics
Calculate the speed needed by a spacecraft to maintain a circular orbit at about 350 km above Earth’s surface. (it's a project where we create our own spaceship. let's say the craft is 500kg)  Not sure about the formula to find this. All I know is
asked by Ben on February 6, 2010 
Business Management
a firm that produce car components has fixed costs of 40000 per month and variable cost of 24.00 per component, regardless of the number of units sold. find the break even point in units and explain it by means of a graph
asked by Jackson on February 25, 2010 
physics
A 2 kg block, starting from the rest, slides 20 m down frictionless inclined plane, dropping a distance of 10m. The magnitude of the net force on the block while it is sliding is...? How do I solve this problem? And if it were to ask for the speed at the
asked by Anonymous on May 11, 2008 
statistics
LSAT test scores are normally distributed with a mean of 490 and a standard deviation of 110. Find the probability that a randomly chosen testtaker will score between 320 and 600. (Round your answer to four decimal places.)
asked by jack on April 16, 2013 
English(To Kill A MockingBird)
In chapter 4 in what specific ways did Scout critize the school in which she is attending? Have you read Chapter Four? Maybe if you did you would know. Yeah but I can't fnd it! type in anti study+ to kill a mockingbird and you will find lots of cliffnotes
asked by Margie on October 26, 2006 
Ap Calculus
Ok, I've been doing BC review tests to prepare for the AP exam. I came across this free response problem and I have no idea how to do it, can someone please help me with this? It gives the differential equations: dP/dt = .03P(30P) and it asks "Find the
asked by Jessica on April 25, 2007 
math
A rectangular lot is bordered on one side by a stream and on the other three sides by 360m of fencing. Find the dimensions of the lot in order to maximize area. (Also, does it make sense if the answer I got is 180m width, 90m length?)
asked by cs on March 27, 2012 
Statistics
An automatic machine in a manufacturing process is operating properly if the lengths of an important subcomponent are independently and normally distributed with a mean of 120 cm and a standard deviation of 4.7 cm. Find the probability that if 3 are
asked by Meghan on September 21, 2011 
Environmental Science
Does anyone know where I can find information on camparing the use of Malathion to the risk of contracting the West Nile Virus? I have to explain my vote and consider any relevant political, social and economical aspects. Just having trouble finding
asked by stephanie on February 20, 2010 
stonehenge
i'm researching stonehenge for my 8th grade gifted class. where can i find a website that will show me how to build a replica of it? http://www.fromoldbooks.org/OldEngland/pages/0002StonehengeRestoredplan/
asked by amy on December 11, 2006 
Math Please Help!!
A 100 foot vertical tower is to be erected on a side of a hill that makes a 6 degree angle with the horizontal. Find the length of each of the two guy wires that will be anchored 75 feet uphill and downhill from the base of the tower.
asked by Ash on February 2, 2011 
MATH
Find the amount accumulated in the sinking fund if $1600 is deposited quarterly for 20 years at 6% per year. (Assume endofperiod deposits and compounding at the same intervals as deposits. Round your answer to the nearest dollar.)
asked by david on March 11, 2009 
trigonometry
Assume that the cities lie on the same northsouth line and that the radius of the earth is 6400 km. Can you help me find the latitude of Spokane, WA if Spokane and Jordan Valley, OR, 43.15degreesN, are 486 miles apart. I think its either A. 47.50degN or
asked by y912f on January 7, 2009 
native american history
Discuss the divisions between the traditionalists and moderate Indians from WWII on. Why does this war help to produce a sharp division between them? How did the actions of the government fully deepen it? Can someone help me break this question down and
asked by elizabeth on September 20, 2007 
Managerial Finance
Isabelle wants to save up an amount of $150,000 for her son's college education fees, coming up in 5 years. Find the amount that should be invested today if the bank pays an interest rate of 5% compounded annually
asked by Kim on February 14, 2016 
human service
What are some other technological tools that have been developed to help the individual manage their professional business contacts and/or stay connected. I googled this question and found no answer. Can you please help me find the website that I need. I
asked by Patiance on November 8, 2011
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