
physics
Two parallel plates carry uniform charge densities –0.45nC/m2 and +0.45nC/m2 . Find the magnitude of the electric field between the plates. Find the magnitude of the acceleration of an electron between these plates.
asked by jrfannin on February 10, 2014 
2 questions. for math.
I have a question. can you help me. The question is, Find the side length of a square that has a permeter of 32cm? im not understanding the part where it says find the side length. because to fing the area you need to do width x length. so how do i get the
asked by Taylor on January 7, 2008 
I need help on a geometry cone/frustrum problem
A sphere with radius 3 is inscribed in a conical frustum of slant height 10. (The sphere is tangent to both bases and the side of the frustum.) Find the volume of the frustum. Could someone help me? I can't find the radius of the cone....
asked by Knights on February 16, 2013 
Physics
Hi, So I have this picture of a ramp with a ball going down. I have figured the average velocity, acceleration, and total distance. Now I have to find out the instantaneous velocity at half the distance? I a not sure how to find the instantaneous velocity,
asked by anonymous on November 4, 2009 
math please help
A (4,3) B (3,3) c (4,5) Find the slope of AB, BC, and AC. Find the tangent of each angle and their angle measure (inv. tan) using: tan of an angle =m2m1/1+m1m2 m2 being the slope of the terminal side (measuring counterclockwise) the triangle looks like
asked by hw on February 8, 2011 
Physics
a) A car accelerates uniformly from rest to a speed of 97.9 mi/h in 6.93 s.Find the constant acceleration of the car.Answer in units of m/s^2. b)Find the distance that the car travels during this time.Answer in units of m. How do you do this?
asked by Landia on October 13, 2016 
Math
Find the future value of a $10,000 investment at 10 % annual interest compounded semiannually for 4 years. (a) $ 14,000 (b) $ 12,000 (c) $ 24,774.55 (d) $ 14,774.55 (e) $ 24,477.55 Can someone please help me find the future value? I am stuck on this
asked by Adam on November 2, 2011 
algebra
Given an equation of a line, find equations for lines parallel or perpendicular to it going through specified points. Find the appropriate equations and points from the table below. Simplify your equations into slopeintercept form. The equation is y=3x+3
asked by jamie edwards on April 18, 2017 
Math
Find inverse of f if f(x)= x^24x+3, (for x is smaller than and equal to 2). First prove that f(x) is one to one in the defined domain of f and then obtain the inverse function. I know how to find the inverse. We just switch x and y. so y=x^24x+3 becomes
asked by Mahnoor on January 19, 2015 
Probability
Six marbles are chosen without replacement from a box containing 10 red, 8 blue, and 3 yellow marbles. Let X be the number of blue marbles chosen. a) Find the probability distribution of X. b) Find the mean of the random variable X
asked by Anne on March 22, 2012 
calculus
Consider the curve given by the equation y^3+3x^2y+13=0 a.find dy/dx b. Write an equation for the line tangent to the curve at the point (2,1) c. Find the minimum ycoordinate of any point on the curve. the work for these would be appreciated i don't need
asked by Little on February 13, 2011 
Chemistry
I cannot find information that gives me a clear answer whether NaBr is an electrolyte or non electrolyte. I have found some information that K2SO4 is an electrolyte, but now I am doubting that. All of my others I have been able to find solid information
asked by Larry on January 31, 2008 
calculus
Consider the function f(x) = 3 2 x^2 on the interval [ 5 , 3 ]. (A) Find the average or mean slope of the function on this interval, i.e. \displaystyle{\frac { f(3)  f(5) }{ 3  (5) } = } 4 (B) By the Mean Value Theorem, we know there exists a c in
asked by sze on January 26, 2018 
pre calculus
Hi, I am having a problem trying to find and understanding how to find the extreme values. I have a problem which I can't do. Will someone please explain for me how to do it. I would like to be able to do other similar problems. This is the problem I am
asked by Cat on June 16, 2013 
Math
1. Power reducing formulas can be used to rewrite 8sin^2 xcos^2 x as 1cos4x. True or False? 2. Find the exact value of cos15 degrees using a suitable half angle formula. square root of 2+root3 / 2? 3. Find the exact value of cos^2(pi/8) using a suitable
asked by mysterychicken on June 3, 2013 
physics
2. a 755N diver drops from a board 10.0 m above the water's surface. Find the divers speed 5.00 m above the water's surface. then find the diver's speed just before striking the water. 3. if the diver in item 2 leaves the board with an initial upward speed
asked by gaby on December 4, 2008 
physics!concervation of energy equations
2. a 755N diver drops from a board 10.0 m above the water's surface. Find the divers speed 5.00 m above the water's surface. then find the diver's speed just before striking the water. 3. if the diver in item 2 leaves the board with an initial upward speed
asked by gaby on December 4, 2008 
PHYSICS
A long, straight wire lies on a horizontal table and carries a current of 1.45 µA. In a vacuum, a proton moves parallel to the wire (opposite the current) with a constant speed of 3.00 104 m/s at a distance d above the wire. Determine the value of d.
asked by Physics on May 26, 2010 
Physics
A woman driving her car approaches an intersection and begins to accelerate just as the traffic light turns green. Her velocity is the function of time described by the equation: v(t)=2t^28t+10 (A) Use calculus to find her instantaneous acceleration at
asked by Genny on June 11, 2012 
physics
question: your propessor enters a dogsled race during the winter break to get started she pulls the sled (total mass 80kg) with a force of 180N at 20degrees the sled moves 5m along horizontal. find the work she does find the final speed of the sled after
asked by jerome on August 25, 2014 
probability
Let 𝑋 and 𝑌 be independent continuous random variables that are uniformly distributed on (0,1) . Let 𝐻=(𝑋+2)𝑌 . Find the probability 𝐏(ln𝐻≥𝑧) where 𝑧 is a given number that satisfies 𝑒^𝑧
asked by yyyyz on July 28, 2019 
7th grade math Ms. Sue please
Multiple Choice Use an equation to solve the problem. 1. What is 57% of 11? (1 point) 11 = 0.57 • n; 19.3 n = 57 • 11; 627 n = 0.57 • 11; 6.27 11 = 57 • n; 0.19 2. 224 is 25% of what number? (1 point) 224 • 0.25 = w; 560 224 = 0.25 • w; 896 224
asked by Delilah on November 28, 2012 
Maths Algebra
Deepak👦is twice as old as his brother Vikas👶. If the difference of their ages be 11 years,find their👬present ages.after 18 years ,their👬ages will be twice . Find this also.
asked by Shaswad on August 20, 2016 
algebra
The total revenue R in dollars from selling tops for P dollars each is given by R= p(2009) where p< or = 200. a) Find R when P = $200 Find P when R = $7500
asked by linda on July 28, 2011 
math help plz!
j=6.50% m=Daily(365) f(effective rate)=? f=(1+i)^n =(1+(.0650/365))^365 =1.0671528481 =0.067152848 =6.72% i know how to find the "f" but if its j=? m=Quarterly(4) f=3.25% how do i find the "j"???
asked by Amy on March 27, 2010 
Algebra
A rectangle has a width which is 2/3 of its length. Find its length if its perimeter is 80 cm. Find its dimensions. P = 2L + 2W 80cm = 2L + 2 (2/3)L 80cm =6/3 L + 4/3L 80cm = 10/3 L 80. 3/10 = L 24cm =L or L= 24 cm W = 2/3 .24 W = 16 cm
asked by Jennifer on May 16, 2015 
math
Find a shortcut for computing the sum: 1+3+5+7++11+13+15+17=?? Explain your shortcut and how you could use this same shortcut to find the sum of all the odd numbers form 45 to 99.
asked by lesly on March 14, 2011 
math!
j=6.50% m=Daily(365) f(effective rate)=? f=(1+i)^n =(1+(.0650/365))^365 =1.0671528481 =0.067152848 =6.72% i know how to find the "f" but if its j=? m=Quarterly(4) f=3.25% how do i find the "j"???
asked by Amy on March 27, 2010 
Geometry
1. A line through (5,4) and (2,4) is perpendicular to a line through (6,y) and (2,3). Find y. 2. The points (x,3), (4,1) and (2,3) lie on the same line. Find the value of x. 3. Given two points A(3,1) and B(12,1), determine a third point P(x,y) such
asked by Hannah on July 30, 2019 
College Algebra
The total revenue R in dollars from selling tops for P dollars each is given by R= P(200p) where P < or = 200. Find R when P = $200 Find P when R = $7500
asked by lisa on July 28, 2011 
Math
Find the unit vector that points in the same direction as the vector from the point P=(8,2) to the point Q=(5,9) Find vector PQ, then divide it by its magnitude.
asked by Alejandro on April 16, 2007 
precalculus
Find the angle between the two sides of length 6 in an isosceles triangle that has one side of length 9 and two sides of length 6. Find using the inverse.
asked by Victoria on April 28, 2011 
math
Find the maximum integer k on your calculator such that log(k)can be evaluated. How could you evaluate the following: log(k+k);log(k^5) on the same calculator? Now find these values.
asked by Hayli on September 12, 2010 
Math
Susan's property is assessed at $27,500. The property tax rate in her city is 3.25%. Find her property tax. how do i find it?
asked by Rhett cowley on May 9, 2014 
PreCalc Answer Check
1. Find a polynomial with a zero at 3 and a zero of multiplicity 2 at 1. My answer: x^3  x^2  5x  3 = 0 2. Find the zeros and multiplicities of f(x) = x^5  16x^4 + 64x^3. My answer: x = 0 of multiplicity 3 and x = 8 of multiplicity 2.
asked by Anonymous on February 2, 2016 
precalculus
Find the angle between the two sides of length 6 in an isosceles triangle that has one side of length 9 and two sides of length 6. Find using the inverse.
asked by Victoria on April 28, 2011 
Physics
1. The image shows a man pulling a truck. If it does not show up for you for whatever reason, this is a description of the image. Assume it takes 2500 N for him to pull the truck along the road at a constant speed. a. Find the net force acting on the
asked by Andrew on October 22, 2018 
Finance 200
The treasurer for Thornton Pipe and Steel Company wishes to use financial futures to hedge her interest rate exposure. She will sell five Treasury futures contracts at $105,000 per contract. It is July and the contracts must be closed out in December of
asked by Ann on August 7, 2011 
chemsitry
Consider the diprotic acid H2A with K1 1*10^3 and K2= 1*10^9 . Find pH, [H2A], [HA], and [A2] for a .2000M solution of H2A b)Find pH, [H2A], [HA], and [A2] for a .200M solution of HA c) Find pH, [H2A], [HA], and [A2] for a .200M solution of A
asked by Jessica on April 7, 2013 
Equation of a straight line.
1. Find the equation of the line described in each case: a) Gradient 3, cuts through (0, 6). b) Steepness of 4, passes through (0, 2). c)Parallel to y = 5x  1, cuts the yaxis at (0, 10). d)Cuts through (0, 7) and (5, 17) 2. Here are 3 eqautions: A. y +
asked by DJ Frankie Pigeon on January 15, 2007 
Chemistry
We did a titration lab, and one of the postlab questions says: "the manufacturer of the vinegar used in this experiment claims that the vinegar contains 5% acetic acid by weight. Use your results and a density of 1g/mL to determine if this claim is true
asked by Alexandra on October 14, 2015 
Chemistry
We did a titration lab, and one of the postlab questions says: "the manufacturer of the vinegar used in this experiment claims that the vinegar contains 5% acetic acid by weight. Use your results and a density of 1g/mL to determine if this claim is true
asked by Alex on October 14, 2015 
mat117/algebra
1)Refer to the triangle in the figure. Find an expression that represents its perimeter. lft side 3/4x, right side 5/x^2 third side 1/x^2. 2)Find the perimeter of the given figure. x/2x  5 and 8/2x  3. 3)The volume of the box is represented by (x^2 + 5x
asked by Diana on July 2, 2007 
Tutor
does anyone know where i can get a free interactive online tutor? I don't really need it all the time, I just need one for math when I'm confused. You guys all do a great job but I was wondering if anyone knows where a tutor would be. Anywhere from AIM to
asked by Emily on April 3, 2007 
Calculus
1. Prove that, among all rectangles with fixed perimeter p, where p > 0, the largest in area is a square. 2. A 2 × 3 array of six congruent rectangular pigpens (that all look the same from above) will be in the overall shape of a rectangle R. We may use
asked by Andy on March 27, 2015 
English (Check)
Rewrite each sentence that follows, adding a term of direct address. Be sure to punctuate the new sentence correctly. 1. Would you please read that poem again? A: Would you please read that poem again, Sarah? 2. Your report on the Puritans was fascinating,
asked by Victoria on February 20, 2016 
Probability
Let Θ be a Bernoulli random variable that indicates which one of two hypotheses is true, and let P(Θ=1)=p. Under the hypothesis Θ=0, the random variable X is uniformly distributed over the interval [0,1]. Under the alternative hypothesis Θ=1, the PDF
asked by A on April 2, 2014 
physics
A flight attendant pulls her 74.2 N flight bag a distance of 324 m along a level airport floor at a constant velocity. The force she exerts is 37.9 N at an angle of 55.2 above the horizon tal. a) Find the work she does on the flight bag. Answer in units
asked by scott on November 22, 2012 
Physics
An object with a charge of 4.4 uC and a mass of 1.4×10^−2 kg experiences an upward electric force, due to a uniform electric field, equal in magnitude to its weight. Find the magnitude of the electric field. Find the direction of the electric field. If
asked by Cooper on January 23, 2012 
math
Assume the car can be purchased for 0% down for 60 months (in lieu of rebate). A car with a sticker price of $42,500 with factory and dealer rebates of $5,100 (a) Find the monthly payment if financed for 60 months at 0% APR. (Round your answer to the
asked by Andrew on February 24, 2013 
math
Assume the car can be purchased for 0% down for 60 months (in lieu of rebate). A car with a sticker price of $42,500 with factory and dealer rebates of $5,100 (a) Find the monthly payment if financed for 60 months at 0% APR. (Round your answer to the
asked by Katarzyna on February 23, 2013 
math
Assume the car can be purchased for 0% down for 60 months (in lieu of rebate). A car with a sticker price of $42,500 with factory and dealer rebates of $5,100 (a) Find the monthly payment if financed for 60 months at 0% APR. (Round your answer to the
asked by Katarzyna on February 24, 2013 
math
Assume the car can be purchased for 0% down for 60 months (in lieu of rebate). A car with a sticker price of $42,500 with factory and dealer rebates of $5,100 (a) Find the monthly payment if financed for 60 months at 0% APR. (Round your answer to the
asked by Katarzyna on February 24, 2013 
Calculus: need clarification to where the #'s go
A particle is moving along the curve y= 2 \sqrt{4 x + 4}. As the particle passes through the point (3, 8), its xcoordinate increases at a rate of 5 units per second. Find the rate of change of the distance from the particle to the origin at this instant.
asked by Alessandra on October 27, 2014 
chem
An experiment shows that a 114 mL gas sample has a mass of 0.167 g at a pressure of 721 mm Hg and a temperature of 32°C. What is the molar mass of the gas? so im suppose to find the molar mass but i thought that was the same as the g just converting it..?
asked by hannah on February 14, 2011 
TRIG
A circular power saw has an 81/2 inch diameter blade that rotates at 4400 revolutions per minute. a)Find the angular speed of the saw blade in radians per minute. b)Find the linear speed in feet per minute of one of the 24 cutting teeth as they contact
asked by Daisy on September 23, 2012 
algebra
Let cost = 600.00 fixed costs x = set of tiles $11.00 find the profit equation by substituting your equations for R and C P = R C THE profit made for 26 and 31 tiles per month. 2nd part; use trail and error to find the quanity of tile sets per month
asked by plz help on May 23, 2012 
msg for Sra (art)
Thanks for your help. Dawn Dupree was the artist given to us. Not our choice! Mainly I have to find her works, title of each piece and date they were completed. When I have this information and written it down, I have to do my own work and version etc. I
asked by mitchell on October 3, 2008 
Physics
The helicopter view in the figure below shows two people pulling on a stubborn mule.(a).find the single force that is equivalent to the two forces shown.(b).find the force a third person would have to exert on the mule to make the net force equal to
asked by Alice on April 23, 2019 
English
Here are some sentences on Conrad I'd like you to check grammatically. Thank you. 1) The “frame” is provided by an anonymous narrator, who on board the Nellie on the Thames introduces Marlow and formally closes the narrative. 2)The effect is one of a
asked by Franco on September 27, 2010 
Physics
Question: You have a 4.5 kg lead block at room temperature. Part A: Find the energy required to raise the lead’s temperature to its melting point. Part B: Find the energy required to melt the lead once it’s reached the melting point. I got the answer
asked by Kaitlyn on April 21, 2017 
english
hi~i'm writing a paragraph about High Absenteeism from School. could you help me to correct the grammar and see whether my ideas relates to my tpoic or not. The topic of absenteeism in school can be approached from several angles due to its complexity.
asked by Jc on June 6, 2007 
language arts
John Yinger thinks that the naturalborn clause should be removed because (1 point)it makes international policy more difficult. it goes against a central principle of American democracy. it damages the relationship between American citizens and immigrant
asked by awesome on January 14, 2013 
Math
If two cylinders are similar, find the scale factor of the smaller figure to the larger figure. The surface area of the smaller area is 20 pi yards squared. The surface area of the larger cylinder is 125 pi yards squared. No radius or height is given, and
asked by Emma on March 26, 2017 
physics
At the instant the displacement of a 2.00 kg object relative to the origin is d = (2.00 m) ihat + (4.00 m) jhat  (3.00 m) khat, its velocity is v =  (6.20 m/s) ihat + (2.70 m/s) jhat + (2.60 m/s) khat, and it is subject to a force F = (6.00 N) ihat 
asked by tae on April 23, 2013 
Math
Ricardo spends $3.50 for lunch each day. Write and solve an equation to find how long it takes him to spend $21.00 3.50x=21.00 3.50(6)=21.00 6. A spiral toy that can bounce down a flight of stairs is made from 80 feet of wire. Write and solve an equation
asked by Jerald on December 4, 2013 
math
Given that 3 to the power of n= 0.2 find the value of (3 to the power of 4) to the power of n. so 3^n=0.2 find value of (3^4)^n my working out: 1)3=n surd 0.2 2)n must be decimal number 3) cuberoot o.2=0.5848035476425733 4)so n=0.5848035476425733
asked by supersupersuper on January 3, 2017 
business law i need an internet article
Find an internet article to find a situation where an ethical decision conflicts with a legal decision. (Broken Link Removed) http://en.wikipedia.org/wiki/Ethical_decision If you find anything of interest in here (use the table of contents links), be sure
asked by Anonymous on February 21, 2007 
Language Arts
Directions: Add the correct puntuation mark to the end of the sentence.Then tell whether the sentenceis a DECARATIVE,INTERROGATIVE,IMPERATIVE, or EXCLAMATORY. (1)intolerance usually results from a lack of information_________________. (2)do you feel
asked by et i need help with my 6th grade homework on September 8, 2008 
Economics
A buyer is usually not willing to spend a lot of time and energy researching the market when: c. savings to be made are small or d. prices vary but quality is still the same I read the text but I couldn't really find this exactly, both answers seem like
asked by Chels on January 23, 2008 
PreCalc
An open box with a volume of 1500cm^3 is to be constructed by taking a piece of cardboard of 20 cm by 40 cm, cutting squares of sides length x cm from each corner and folding up the sides. Show that this can be done in two different ways, and find exact
asked by Andy G on January 14, 2014 
calculus
Suppose that 430 ft of fencing is used to enclose a corral in the shape of a rectangle with a semicircle whose diameter is a side of the rectangle. (In the figure below, the blue outline represents the fencing.) Find the dimensions of the corral with
asked by Help asap!! plz on October 28, 2010 
CALC HARD...
Suppose that 430 ft of fencing is used to enclose a corral in the shape of a rectangle with a semicircle whose diameter is a side of the rectangle. (In the figure below, the blue outline represents the fencing.) Find the dimensions of the corral with
asked by HELP on October 29, 2010 
CALC HARD...
Suppose that 430 ft of fencing is used to enclose a corral in the shape of a rectangle with a semicircle whose diameter is a side of the rectangle. (In the figure below, the blue outline represents the fencing.) Find the dimensions of the corral with
asked by HELP on October 29, 2010 
Advanced Maths (Vectors) AQA Level, please help
An aircraft is traveling horizontally in an easterly direction at a height of 400 m above level ground and at a speed of 120 m/s. when it is directly above the observer, M, it releases a package. In relation to origin O and to x and y directions of east
asked by Jat on February 26, 2012 
Astronomy
1. In this collection of problems we will try to use what we have learned to see what information about a hypothetical Solar System planet we can extract from observations. The planet, Nursat, is observed to be in opposition every 374 days. Use this
asked by keitanako on December 9, 2013 
physics
A flight attendant pulls her 69.1 N flight bag a distance of 280 m along a level airport floor at a constant velocity. The force she exerts is 32.7 N at an angle of 50.2◦ above the horizon tal. a) Find the work she does on the flight bag. Answer in
asked by billy on October 13, 2008 
Philosophy/ethics
16. You find out that two of your friends aren't speaking to each other. What would be a good first step to take to help them resolve their problem? a. decide which one of them is causing the problem b. find someone else to talk to them c. listen calmly as
asked by Sid.V on December 21, 2018 
math
large fresh salad = $4.43 shrimp tomato cocktail = $7.39 hot dog and fries = $13.86 vanilla cheese cake $6.97 cola $2.24 Do rough estimate to find out how much it will cost by rounding to the ones place and adding the amounts. Then decide you want to be a
asked by alandra on May 22, 2012 
physics
A 20kg block is being pulled by a 150N force,the block is initially at rest,if the coefficient of frictionbetween the block and the surface is 0.3,find (a)the normal force,(b)the friction force acting on the block,(c)find the acceleration of the block
asked by amaka on October 28, 2011 
Physics
Ammeter 1 reads 0.20 A. a. What should ammeter 3 indicate? b. What should ammeter 4 indicate? Given: RA = 22OHM RB = 13OHM A1 = 0.20 A Ammeter 2 reads 0.15A. a. Find the voltage across the 22ohm resistor? b. Find the voltage across the 15ohm resistor?
asked by Priscilla on February 14, 2010 
chemistry
a. Find the amount of solute based on this information Volume = 500 ml Concentration of solution= 15% (w/w) Solute (molar mass) = H2SO4 is 98.0g/mol b. Find the molar mass Amount of solute= 117.0g Volume of solution= 2.00L concentration of a solution= 1.0M
asked by vince11 on November 27, 2012 
chemistry
a. Find the amount of solute based on this information Volume = 500 ml Concentration of solution= 15% (w/w) Solute (molar mass) = H2SO4 is 98.0g/mol b. Find the molar mass Amount of solute= 117.0g Volume of solution= 2.00L concentration of a solution= 1.0M
asked by vince11 on November 27, 2012 
Ap calc
A traffic engineer monitors the rate at which cars enter a freeway onramp during rush hour. From her data, she estimates that between 4:30pm and 5:30pm the rate R(t) at which cars enter is given by: R(t)= 100(10.00012t^2) car per min., where t is time in
asked by justin on February 15, 2011 
math plz help
please can someone help me do this problem. atleast help me find an equation to start with thank you. each page in a children's picture book has area 58 squared inches and a left side margin of 1.5 inches and top,bottom and right side margins of 0.5
asked by britteny on January 23, 2007 
AP English
I have to read the Grapes of Wrath and find 24 quotes to analyze. Some of the quotes have to be biblical allusions (from evennumbered chapters), and the others have to be a rhetoric device. I'm almost done with the book, but I've only found maybe 13
asked by Emily on August 15, 2009 
Calculus
Let R be the region enclosed by the graphs y=e^x, y=x^3, and the y axis. A.) find R B.) find the volume of the solid with base on region R and cross section perpendicular to the x axis. The cross sections are triangles with height equal to 3 times the
asked by Michelle on May 13, 2014 
Vectors
Can someone start me off on these and please explain step by step how you got everything because I'm having difficulty understanding the entire concept. Find the projection of u onto v and calculate its magnitude. a) u = (2,5) v = (6,4) b) u = (3, 6, 2) v
asked by Alex on March 25, 2008 
geometry
An isosceles triangle has two 10.0inch sides and a 2winch side. Find the radius of the inscribed circle of this triangle, in the cases w = 5.00, w = 6.00, and w = 8.00. And Write an expression for the inscribed radius r in terms of the variable w , then
asked by Johny G12 on April 11, 2010 
geomery
An isosceles triangle has two 10.0inch sides and a 2winch side. Find the radius of the inscribed circle of this triangle, in the cases w = 5.00, w = 6.00, and w = 8.00. And Write an expression for the inscribed radius r in terms of the variable w , then
asked by Johny g12 on April 12, 2010 
physics
An object has three component velocities: 5mi/hr toward the east, 12mi/hr toward the south, and 8mi/hr toward the northwest. Find the resultant velocity of the object. For resultant velocity, I got 6mi/hr I don't understand how to find the direction angle
asked by Emily on October 11, 2014 
Science/ Biology 8
There is a question in my science textbook and no where in the textbook can I find the answer neither can I find the answer on the internet. The question is: "If you shine a flashlight in a dark room and sprinkle talcum powder in front of the flashlight,
asked by Maddison on April 24, 2010 
Physics
An object has three component velocities: 5mi/hr toward the east, 12mi/hr toward the south, and 8mi/hr toward the northwest. Find the resultant velocity of the object. For resultant velocity, I got 6mi/hr I don't understand how to find the direction angle
asked by Anonymous on October 10, 2014 
Chemistry
I need to find heat of vaporization. The liquid starts to vaporize at 110 degrees C and there is 10 g of the liquid. I don't think it matters but it is heated at 60 kj/minute. Would it just be amount multiplied by the temp when it starts to vaporize? I
asked by jp on February 19, 2010 
Physics
A 0.2 kg yoyo consists of two solid disks of radius 5.5 cm joined together by a massless rod of radius 1 cm and a string wrapped around the rod. One end of the string is held fixed and is under constant tension T as the yoyo is released. a. Find the
asked by MUHAMMAD JUNAID on April 9, 2019 
math
Can someone start me off on these and please explain step by step how you got everything because I'm having difficulty understanding the entire concept. Find the projection of u onto v and calculate its magnitude. a) u = (2,5) v = (6,4) b) u = (3, 6, 2) v
asked by Alex on March 25, 2008 
physics
A 50 gram ball enters a a pendulum with mass 200 g. The pair then swings up to a height of 10 cm. Find the velocity at which the pair move immediately after the collision. Your answer is incorrect. 1.4 m/s Find the initial velocity of the ball before the
asked by brett on February 23, 2012 
chem
A student mixes 5 mL of 2.00 x 10^3 M Fe(NO3)3 with 5 mL 2.00 x 10 ^3 M KSCN. They find that in the equilibrium mixture concentration of FeSCN^2+ is 1.40 x 10^4 M. Find each of the following: the initial concentration in solution for Fe^3+ and SCN, the
asked by Grant on October 14, 2015 
geometry
An isosceles triangle has two 10.0inch sides and a 2winch side. Find the radius of the inscribed circle of this triangle, in the cases w = 5.00, w = 6.00, and w = 8.00. Then Write an expression for the inscribed radius r in terms of the variable w , then
asked by sarah on April 17, 2010 
physics
From the edge of the rooftop of a building, a boy throws a stone at an angle 26.1° above the horizontal. The stone hits the ground 4.25 s later, 103m away from the base of the building (b) Find the initial velocity of the stone. (c) Find the initial
asked by mia on September 28, 2013
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