
physics
a metal cylinder is heated and then cools. if the radius always equals the height, find the expression for the instantaneous rate of change of volum V with respect to the radius r.
asked by luis on March 29, 2010 
Art
Can you also help me find online material on how to write a "tale"? I should also refer to Poe's tales and its main features. Can you think of another important American writer of tales? Thank you very much, Writeacher!!
asked by Franz on June 3, 2012 
phyics
Find the horizontal range of a baseball that leaves the bat at an angle of 63 degrees, with the horizontal with an initial velocity of 160 km/hr. discard air resistance
asked by Brittany on December 14, 2011 
physics
Two 200kg masses(440 lb) are separated by a distance of of 0.75m. Using Newtons law of gravitational force Find the magnitude of the gravitational exerted by one mass on the other.
asked by sabrina on September 26, 2017 
Precalculus
Find all solutions to 2 sin(theta) = sqrt(2) on the interval 0 less than or equal to theta less than 2 pi Give your answers as exact values, as a list separated by commas.
asked by anonymous on April 7, 2013 
Maths
2 Similar Cups are 3cm&5cm deep,if larger Cup holds 625cm cube of water,find smaller cup Volume
asked by John on December 7, 2018 
math Question
Find an equation that models a hyperbolic lens with a=12 inches and foci that are 30 inches apart. assume that the center of the hyperbola is the origin and the transverse axis is vertical.
asked by brian on May 19, 2014 
Algebra
120 meters of fencing is used to fence 3 sides of a dog park against an existing wall. if the width of the park is w, find the length of the field in terms of w
asked by John on May 6, 2012 
Chemistry1
How do we find the molar mass of a gas produced? Example if 1.00 kg of N2H2 reacts with 1.00kg of H202. How many moles of N2 could be formed? THe equation is N2H2+2H202 > N2 + 4H20
asked by Hero on April 9, 2012 
science
Hi I cant find a good short answer  during phase change in water how would you describe change in a arrangement of particles as heat energy and temperature increases.
asked by bella's mom on October 22, 2007 
Physics ( electricity)
An electrom (qe = 1.6^19 Coulomb) moves a distance of 0.170m in an 8.00 N/C electric field. Using appropriate formulas and a logical method, find the energy gained by the electrom. Whoa ... how do I do this???
asked by Art on May 27, 2012 
Chemistry
An element crystallizes in a bodycentered cubic lattice. The edge of the unit cell is 2.77 , and the density of the crystal is 8.65 . Find the atomic weight of the element.
asked by John on January 17, 2013 
Pythagorean theorm
i have been workin on this problem for hours and desperatly need help. Im suppose to solve the following three problems in the pythagoream theorem form and also find the ratios. Can someone pleasse help me =] Pythagorean Theorem a² + b² = c² 1.) O =
asked by Ruby on July 24, 2008 
reading
In reading we have to draw a picture about how dog sleds are loaded. We just finished reading The Call of the Wild by Jack London so this is one of our many assignments and I can't find anything about this on th internet. Thanks so much for any help!
asked by lellie on February 9, 2008 
algebra 1
The dimension of a rectangular prism are all positive integers. The volume of the prism is 2002 cubic cm. Find the minimum possible sum in cm of the length width and height.
asked by boogie on September 8, 2011 
PHYSICS
two masses m1 = 12 kg and m2 = 13 kg are connected by a light inextensible string passing over a frictionless pulley. Find (a) acceleration of the system when released from rest (b) tension in the string ?
asked by Camz on December 3, 2015 
physics
Help! I have no idea how to solve this: If the distance between two slits is 0.0550 mm, find the angle between the firstorder and secondorder bright fringes for yellow light with a wavelength of 605 nm.
asked by anonymousq on April 19, 2007 
math
toy rubber balls are packaged in a circular cylinder that holds 3 balds. the diameter of each ball is 3.7 cm find the volume of the circular cylender use 3.14 to represent
asked by Frida on December 8, 2010 
Algebra 1
A grocery store reduced the price of a loaf of bread from $3.80 to $3.67. Find the percent change (discount rate). Round to the nearest tenth of a percent.
asked by Keonn'a on August 30, 2017 
Physics but algebra problem
Having issue with algebra. 89N=ma 99N=m2a would you do something like plugging one into the other such as. a=89/m 99N=99/(2(89/m) prob is when i get a fraction in the denominator i get confused can someone help me. I'm trying to find the mass. Which i will
asked by Leah on September 23, 2009 
math
find the product or quotient . write the strategy you used . write model,break apart, multiplication table ,inverse operations pattern ,or doubles 56 divided by 7
asked by xavier on September 19, 2011 
Calculus AB
Let R be the region bounded by the graphs of y=sin(pi x) and y=(x^3)4x, as shown in the figure above. (a) Find the area of R. (b) The horizontal line y=2, x=2, x=1. Write, but do not evaluate, an integral expression for the area.
asked by Jaime on March 11, 2011 
math
You have a set of 36 flash cards numbered from 1 to 36. A card is chosen at random. Find the odds in favor of and the odds againts each selection. Prime number Would it be 1?
asked by Anonymous on November 3, 2010 
MATH HELPPPP
in the diagram below,
asked by Kristie on February 27, 2012 
Physical Science
The radius of a certain planet is 6.04x10^7 meters, and its mass is 5.19x10^26 kg. Find the density of this planet. (The volume of a sphere is given by (4/3)(pie)(r^3). Answer in units of grams/cm^3
asked by Christina on February 3, 2008 
Math
in the diagram below,
asked by Kristie on February 27, 2012 
trig
Find all angles θ between 0° and 180° satisfying the given equation. (Enter your answers as a commaseparated list. Round your answers to one decimal place.) cos θ = 1/7
asked by stellar on September 30, 2011 
calculus
In a certain city the temperature (in °F) t hours after 9 AM was modeled by the function T(t) = 52 + 15 sin(πt/12) Find the average temperature Tave during the period from 9 AM to 9 PM. (Round your answer to the nearest whole number.)
asked by polina on March 15, 2017 
Trig
Find all angles θ between 0° and 180° satisfying the given equation. (Enter your answers as a commaseparated list. Round your answers to one decimal place.) Sin θ = 1/4
asked by Amanda on November 9, 2015 
algebra
Please help me. Find the equation of the line satisfying the indicated properties. Express your answer in slopeintercept form. Passing through point (2, 4) and perpendicular to the line containing points (3, 1) and (5, 1).
asked by Vee on January 31, 2013 
MATH
in the diagram below,
asked by Kristie on February 27, 2012 
Precal
Consider the line segment joining A(1,2) and B(3,4) a) find an equation that expresses the fact that a point P(x,y) is equidistant from A and from B. b) describe geometrically the set of points described by the equation in part (a).
asked by Andrea on August 25, 2011 
math
A framed picture has a total length and breadth of 20 cm and 10 cm. The frame has width x cm. a) Find the rule for the area (A cm^2) of the picture inside. b) What are the minimum and maximum values of x?
asked by Anonymous on October 22, 2018 
Calculus 1
Sketch the graph of f by hand and use your sketch to find the absolute and local maximum and minimum values of f. (If an answer does not exist, enter DNE.) f(t) = 6 cos t, −3π/2 ≤ t ≤ 3π/2
asked by TayB on October 20, 2015 
physics
The pitcher throws a pitch from the mound toward home plate 18.4m away. The ball is released horizontally from a height of 1.8m with a velocity of 32m/s. Find the height above ground when it gets there.
asked by charlee on February 22, 2017 
math 101
assume that a set of test scores is normally distributes with a mean of 120 and a standard deviation of 25. use the 689599.7 rule to find the percentage of scores greater tha 145
asked by amy on July 15, 2016 
algebra
The diameter of a valve for the space shuttle must be within 0.001 mm of 5 mm. Write and solve an absolutevalue equation to find the boundary values for the acceptable diameters of the valve.
asked by buttercup on August 29, 2016 
"Math"
A jewelry store wishes to rpice a watch that costs $65 to yield a gross profit (markup) of 52% of thier costs. Find the selling price?
asked by *Thara* on February 9, 2010 
physics
a ball of mass 4kg is thrown vertically upwards with a velocity of 40m/s.Find amaximum height bheight after 3 seconds ctime of flight
asked by heather on March 24, 2012 
Math
Find the missing dimensions for each threedimensional figure to the nearest tenth given the volume and other dimensions. I'm not understanding the cones too much. r=5in., v = 487in.3 How do I work it, given only the radius
asked by Nia on March 23, 2011 
Math (PreCalculus)
Find an equation of the line containing the points (8,6) and (8, 4) so far i've tried yy1=m(x+x1) but currently cannot get the answer....TT the answer is suppose to be x=8 plz show the work so i can study form it and do it myself the next time... thnx
asked by K.C on October 27, 2010 
physics
Two books of mass m1 = 6.9 kg and m2 = 3.8 kg are stacked on a table as shown in the figure below. Find the normal force acting between the table and the book on the bottom. im confused where to start
asked by tommy on September 9, 2010 
algebra
Hey I am trying to help my son in math. The question is, The scale of a district map is 1 over 10000. Find the distance on the map, in centimeters, for each of the following distances. a) 800m b) 5 km I need to see how this is worked out.
asked by Helpless Dad on August 31, 2010 
math trigonometry
two straight roads intersect to form an angle of 75 degree. find the shortest distance from one road to a gas station on the other road 1000 m from the junction.
asked by jerra on July 10, 2017 
physics
A car of mass 2000kg is travelling at 84m/h when a force of 500N beings to oppose the motion.Find the required to bring the car to rest.
asked by Anonymous on February 8, 2013 
calculus
Find two unit vectors that make an angle of 60° with v = 3, 4 (Enter your answer as a commaseparated list of vectors. Round your answers to four decimal places.)
asked by colt on August 31, 2011 
math 115
Let x be a continuous random variable that follows a normal distribution with a mean of 200 and a standard deviation 25. Find the value of x so that the area under the normal curve between ì and x is approximately 0.4798 and the value of x is greater than
asked by louise on November 19, 2013 
Probability
A single card is drawn at random from an ordinary deck of cards. Find the probability that is either an ace or a black card. Answer to 3 decimal places.
asked by Mi on April 27, 2016 
PreCal (Help Please!!!!)
[Note: i need help really badly. I only have 2 hours left] Find all solutions of the following equations. Be sure to check for extraneous solutions. show work 1). 3cosθtan^(2)θcosθ=0 2). tan (3θ)+1=0
asked by Amber on July 12, 2016 
math
the angle of elevation of the top of a radio mast from a point 53m from its base on level ground is 61degre. Find the height of the mast to the nearest 5m.
asked by melvin on June 12, 2016 
physics
A 69 kg person on skis is going down a hill sloped at 36° below the horizontal (+x direction). The coefficient of friction between the skis and the snow is 0.15. Find the x and y components of the weight of the skier going downhill.
asked by mark on December 11, 2011 
calculus
Determine if the Mean Value Theorem for Integrals applies to the function f(x) = x^3 − 9x on the interval [−1, 1]. If so, find the xcoordinates of the point(s) guaranteed to exist by the theorem. Not quite sure how to do this one at all to be
asked by Jason on January 1, 2016 
Physics
Suppose a sled has a mass of 12 kg and a child is exerting a force of magnitude 200 N. Find the angle q at which the normal force N vanishes. What is happening physically when N = 0?
asked by Lauren on March 24, 2014 
Business
I have searched and searched but I can't find examples of companies that product's image has been made or broken through Advertisement. Any ideas on Products hurt or helped by advertising?
asked by Alan on March 3, 2008 
calculus
the region bounded by the graph f(x)=x(2x) and the x axis is revolved about the y axis. Find the volume of the solid. I did the integral using the shell method, but the answer wasn't correct.
asked by john on January 4, 2016 
English
Ms. sue I am writing a paper on cost of food today. Where can I find graph or table showing the increase in price for food and gasoline. Please help. Rose
asked by rose Ms. sue on May 11, 2008 
math
the cast of painting a wall with dimensions 15m by 20m is 6250 find the altitude of a rhombus shaped window with side 7.5 m,,if the rate of painting 25 per m
asked by Anonymous on January 19, 2014 
math
A student starts from A and walks 3km east to B, she then walk 5km on a bearing 152 degree from 13 . She reaches a point c . Find the distance and bearing of C from A.
asked by joy on May 25, 2017 
chemistry
use the nuclear decay equation to find out how much a 7mg sample of iodine 128 remains after 116 minutes if the half life of this isotope is 25 minutes.
asked by dela on October 12, 2010 
physics practical investigation
Plan,design and conduct an investion to find out whether the amount of heat produced will depend on increase on concentration of Hcl when Hcl reacts with an excess zn.
asked by Jossie on March 25, 2013 
Math
The length of a rectangle is 15 m longer than 3 times the width. The perimeter of the rectangle is 74m .find the dimensions. answer in fractional form using mixed numbers
asked by Brent on June 2, 2016 
Health
What indicators would warn you that the team is planning this transition to an electronic health information management system is not functioning well? Where can I find this information or what sub title would be appropriate for this question.
asked by Traci on December 3, 2015 
Math
Mike had done a division problem which was scribbed on a piece of paper and it involved 3 mixed numbers. ? / 2 3/4 = 4 1/2. He couldn't read the first mixed number. Find out what ? is ______________
asked by Mike on February 11, 2008 
Physics
Five masses are positioned as follow in the x and y axis: m1 = 1 kg at (0,0) m2 = 2 kg at (4,0) m3 = 3 kg at (4,5) m4 = 4 kg at (0, 5) m5 = 5 kg at (2, 2) All x and y values are in meters. Find the magnitude and direction of the net gravitational force
asked by Justin on July 13, 2016 
physics
A 85.0 N weight is held in the hand. The upper arm makes an angle of 29.0° with the vertical, and the lower arm is 13.0° above the horizontal. Find the tension in the biceps tendon.
asked by JOHN on March 26, 2012 
calculus
Please answer. An airplane at an altitude of 3000m, flying horizontally at 300km/hr, passes directly over an observer. Find the rate at which it is approaching the observer when it is 5000m away.
asked by joecel on September 20, 2015 
Physic II
Explain why you expect to find that the amount of charge a battery can pump onto a parallel plate capacitor will be cut in half if the distance between each plate doubles.
asked by Huline on March 13, 2014 
physics
how large a force is required to accelerate a 1300 kg car from rest to a speed of 20 m/s in a horizontal distance of 80 m ? I'm trying to find the formula and then plug in the correct #'s into the formula.
asked by courtland on February 11, 2010 
Math 111
Find the quadratic function that has vertex (1, 8) and whose graph goes through the point (8, 170). I could not understand this problem I Can not for the lift of me get it. I got as far as some number(x+1)^2+8 but i don't know what the number before all
asked by Jessica on October 27, 2010 
Calculus
Find the area under the curve of y=2x+6 from x=0 to x=3 using 3 strips of equal length using right endpoints. I tried this equation before and my answer was 9 but my teacher said it was wrong? and I also posted this before and Someone who helped me got
asked by Maya on June 17, 2016 
Physics
Joanne drives her car with a mass of 1000 {\rm kg} at a speed of 23m/s . Find a road friction force that is need to bring her car to a halt in 14s .
asked by Ericca on February 14, 2013 
physics
At each corner of an equilateral triangle, there is a charge, as diagrammed below. The length of each side of the triangle is .4 meters. Find the net force acting upon q1, given the following values for each of the charges: q1 = −2.00 μC, q2 = 3.00 μC,
asked by Anonymous on February 26, 2017 
math
Sonia bought washing machine 10000and paid 2000 and rest in installments of rs 500 at the rare 10℅ find the total amount paid
asked by rk on January 8, 2017 
math  business
My profit formula is P = .005x^2 + 4x  200. The question wants me to find the number of donuts sold (what they are talking about in the problem) that will generate the highest profit. How do I determine that? Thank you.
asked by Carly on November 19, 2016 
Math
Find the area and circumference of the circle (6 m). Use 3.14 for pi. Show your work, round your final answer to the nearest tenth, and label your answer with the correct units for each.
asked by Evelyn on March 25, 2019 
Physics
A 3500kg truck moving at 45km/h collided head on with a 1600kg car moving at 25km/h. Find the velocity of the combined cars after the collision.
asked by Sumeet on November 18, 2016 
PRECALCULUS
Find the accumulated value of a $5000 investment which is invested for 8 years at an interest rate of 12% compounded: (a) annually (b) semiannually (c) quarterly (d) monthly (e) continuou
asked by ROSE on November 18, 2016 
trig
The lengths of 2 adjacent sides of a parallelogram are 42 cm and 36cm. an angle of the parallelogram is 4o degrees. Find the measure of the longest diagonal to the nearest tenth of a centimeter.
asked by ashley  on April 26, 2011 
criminal law
choose a state and research the rules for admissibility of scientific evidence. Has it maintained Frye, adopted Daubert, or adapted its own rules? Discuss what you find.
asked by paula on May 27, 2010 
english
i am not able to find a a poem on any inanimated thing like snow, chalk candle etc. in about 81o lines on net. poem should be of class 9th level can u help me please... regards yash sethia
asked by YASH on June 20, 2011 
Physics
An object weighing 72 newtons is being accelerated at 3.5 m/s^2 by an unknown force Fp at an angle of 35 degrees from the horizontal. The object is being pushed across a surface with a coefficient of friction 0.2. Find Fp.
asked by Dylan on January 31, 2018 
Physics
Two carts with masses of 4.3 kg and 3.9 kg move toward each other on a frictionless track with speeds of 5.6 m/s and 5.0 m/s, respec tively. The carts stick together after colliding headon. Find their final speed.
asked by Chris on January 26, 2015 
Calculus
If a ball is thrown into the air with a velocity ofc 40ft/s,its height in feet after t seconds is given by y=40t16t^2. Find the velocity when t =2. Could you please show the steps
asked by Eileen on June 30, 2010 
Algebra 2
A Rectangular Field is to be enclosed by a fence and divided into three parts by another fencer. Find the maximum area that can be enclosed and separated in this way with 500 meters of fencing.
asked by Zach on February 3, 2011 
Algebra 2
A Rectangular Field is to be enclosed by a fence and divided into three parts by another fencer. Find the maximum area that can be enclosed and separated i this way with 500 meters of fencing
asked by ali on February 3, 2011 
Chem II
Find the mass of sodium formate that must be dissolved in 200.00cm^3 of a 1.0M solution of formic acid to prepare a buffer solution with pH=3.40? I have no clue how to work this out. Please help me.
asked by Bianca on November 19, 2012 
Language arts
Ok so I have to do a powerpoint presentation on the Holocaust. My topic is how Anne Frank's life represented the Jewish experience during the Holocaust and I need 3 websites. (If I find some I will update this post) :)
asked by Fairypenguingirl on May 6, 2015 
Zee school , math subject.
From a rectangular sheet of tin,of size 100cm by 80cm,are cut four squares of side 10cm from each corner.Find the area of the remaining sheet.
asked by Kushitha on December 15, 2016 
Basic algebra
jenelle makes $7.25 an hour at the flower shop write an inequality to find out how many hours you was work to earn at least $125 how do you want does the word stepbystep
asked by Anonymous on January 17, 2017 
honors geometry
Find the area of the shaded region. diagram is a rectangle with 10 height and 17 base. there is a triangle inscribed that is not shaded. its a little confusing and im supposed to assume 3060 90 triangles??
asked by kourtney on May 12, 2011 
physics
a 1.2 kg book is dropped from a height of 0.8 m onto a spring with force constant k=1960 N/m ang neglible mass. find the maximum distance that the spring will be compressed.
asked by vendy on August 15, 2012 
phlilosophy
I have a question I need answered I don't want the answer I just want to know where can I find it or help answering it I don't understand phylosophy. How are pragmatism and analytic philosophy uniquely American movement?
asked by pennet on November 18, 2009 
math
Find the volume and surface area of a right cylinder with radius 7.5 cm and height 16 in. Make sure your final answer is in inches. Round your answer to the nearest hundredth.
asked by Andrea on August 15, 2012 
physics
find the power by a man if he runs at constant speed of 5km/h along an ascending road which makes 5 degree with the horizontal if the mass of yhe man is 60 kg.
asked by ram on October 8, 2012 
math
The volume V of a gas varies inversely as pressure P is exerted. If V = 4 liters when P = 3.5 atmospheres, find V when P = 2.5 atmospheres. Note: Round your answer to the nearest thousandth.
asked by Anonymous on October 8, 2012 
physical science
plan,design and condact an investigation to find out whether the amount of heat produced will depend on an increase on the concentration of HCl when HCl reacts with an excess Zn.
asked by kholofelo on April 25, 2013 
geometry
A square pyramid has base edges 10 in. long and a height of 4 in. Sketch the pyramid and find its surface area. Round your answer to the nearest tenth
asked by Anonymous on October 22, 2012 
calculus
find the xcoordinate of all points on the curve y=12Xcos(5X)(30*sqrt3*X^2) + 16, pi/5
asked by jake on October 19, 2014 
Math(cal2)
Find the volume of the solid whose base is the region bounded by the x axis, the curve y=(x^2+9)^(1/2), x=1,x=3 and which has the property that each cross section perpendicular to the x axis is equilateral triangle.
asked by anonymous on February 4, 2018 
Physics
a mass of 100kg moves in a circular path of radius of 5cm with uniform speed of 20m/s.find the centripetal acceleration and centripetal force.
asked by Emmanuel Chinda on July 9, 2018
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