
Chemistry
Assuming an efficiency of 38.60%, calculate the actual yield of magnesium nitrate formed from 145.9 g of magnesium and excess copper(II) nitrate. I got 230.5g but it isn't right.. I got 6 mols of Mg then calculated molar mass of Mg(NO3)2 and got 148.31 and
asked by Clare on April 22, 2014 
Chemistry
Okay, I feel like this question should be really easy because it's a multiple choice question but how do you figure it out?? I'm completely drawing a blank. Consider the following equilibrium N2O4(g) 2NO2(g) Kc = 4.8E3 Which set of concentrations
asked by a Canadian on April 9, 2013 
Physics
A bullet of mass 3.3 103 kg moving at 750 m/s impacts with a large fixed block of wood and travels 5 cm before coming to rest. Assuming that the deceleration of the bullet is constant, find the force exerted by the wood on the bullet? I am confused on how
asked by MeganErin on November 13, 2010 
algebra
Taisha uses the elliptical crosstrainer at the gym. Her general goal is to burn 280 calories per workout, but she varies by as much as 25 calories from this amount on any given day. Write and solve an equation to find the maximum and minimum number of
asked by Briana on August 30, 2012 
Math
You want to find out what the favorite hot lunch in the school cafeteria is among the high school students. At an assembly for the whole school, you decide to survey all students who are sitting on the end of their rows in the auditorium. What type of
asked by Steve on April 25, 2015 
physical
QUESTION 4 [18] Two long currentcarrying wires are shown in Fig 1. They are carrying the same current I which are pointing in opposite directions. Their separation is s. A field point Q lies in their plane, a distance ñ from their midline. 4.1 Find the
asked by Anonymous on September 16, 2011 
Trig
a child puts beads on one spoke of a bicycle wheel. the tire has a diameter of 2ft. if the child rides so that the tire makes one full rotation every 15 sec, and the beads begin in the horizontal outward position, find an equation that models the position
asked by Bailey on October 7, 2013 
Physics
A ball is thrown horizontally from the roof of a building 9.0 m tall and lands 8.5 m from the base. What was the ball's intial speed? I have no idea how to do this problemm or what formulas to use because of the fact that I do not know the time interval it
asked by Physics on July 5, 2009 
Biosci 101
Hi there :)I was just wondering if you knew how the lac operon theory works? And if there are any good websites for this? This is the best one I could find. http://www.dartmouth.edu/~cbbc/courses/bio4/bio4lectures/ProkGeneControl.html Most sites discuss
asked by San on March 16, 2007 
algebra
PLEASE HELP :( Taisha uses the elliptical crosstrainer at the gym. Her general goal is to burn 280 calories per workout, but she varies by as much as 25 calories from this amount on any given day. Write and solve an equation to find the maximum and
asked by Briana on August 30, 2012 
chemisrty  ICE CHART DEPOSTION
How do i fill out an ICE chart when i am only given an initial concentration of one reactants and an equilibrium of another reaction? inital 0.045 HNO2(aq) Equilibrium 0.0043 H3O+(aq) NO2(aq)  no information my first thought was to sqaure root .0043 mol/l
asked by Tara on November 22, 2012 
Physics
A billiard ball moving at 5.80 m/s strikes a stationary ball of the same mass. After the collision, the first ball moves at 4.81 m/s at an angle of 34.0° with respect to the original line of motion. Assuming an elastic collision (and ignoring friction and
asked by John on March 14, 2011 
math
A rectangular beam is cut from a cylindrical log of radius 15 cm. The strength of a beam of width w and height h is proportional to wh^2. Find the width and height of the beam of maximum strength. (Round your answers to two decimal places.) h= ? w = ?
asked by Leila on October 29, 2015 
physics
1. Two identical 15.0 kg balls, each 25.0 cm in diameter, are suspended by two 35.0 cm wires as shown in the figure. The entire apparatus is supported by a single 18.0 cm wire, and the surfaces of the balls are perfectly smooth. Find the tension in the
asked by Anonymous on September 25, 2012 
math
write each ratio in simplest form..1) 2 yards to 15 feet.2) in a survey,9 out of 10 doctors recommended a certain medicine.if 80 doctors were surveyed,how many doctors recommended the medicine? 3)find each unit rate.travel 804 miles in 16 hours.4) the mass
asked by angie on December 21, 2013 
Chemistry Help PLEASE!!
I don't know how to do this question, I understand we have to use ICE but I keep getting the wrong answer when I solve for x, it's just not working for me. Consider the following reaction: A(g) > 2B (g) Find the equilibrium partial pressures of A and B
asked by Student on February 24, 2012 
PHYSICS
A spring is hung from the ceiling. A 0.477 kg block is then attached to the free end of the spring. When released from rest, the block drops 0.153 m before momentarily coming to rest, after which it moves back upward. (a) What is the spring constant of
asked by Anonymous on November 17, 2015 
physics
Two blocks move along a linear path on a nearly frictionless air track. One block, of mass 0.104 kg, initially moves to the right at a speed of 4.70 m/s, while the second block, of mass 0.208 kg, is initially to the left of the first block and moving to
asked by Anthony on November 29, 2012 
Physics
A billiard ball moving at 5.80 m/s strikes a stationary ball of the same mass. After the collision, the first ball moves at 4.81 m/s at an angle of 34.0° with respect to the original line of motion. Assuming an elastic collision (and ignoring friction and
asked by John on March 14, 2011 
physic
An object of mass m is at rest at the top of a smooth slope of height h and length L. The coefficient of kinetic friction between the object and the surface, μk, is small enough that the object will slide down the slope if given a very small push to get
asked by physic please help on October 23, 2014 
Calc.
a)If f(x)= x/(x+2), 1 less than or equal to x less than or equal to 4, find the left and right sums for n= 10, 30, and 50. b)Illustrate by graphing the rectangles in part a. c)Show that the exact area under f lies between 1.603 and 1.624. So this is all I
asked by CMM on January 13, 2011 
Math
The rectangle shape in a set of blocks comes in two sizes(small and large), three colors (yellow, red, and blue), and have two thicknesses, (thick and thin). 1. Draw a tree diagram to find the total number of outcomes. 2. How many outcomes are possible? 3.
asked by Matt on March 17, 2014 
Statistics
A typist at a constant speed of 65 words per minute makes a mistake in any particular word with probability 0.06, independently from word to word. Each incorrect word must be corrected, a task which takes 14 seconds per word. Find the mean of the time (in
asked by Jon on March 1, 2011 
Physics PLEASE HELP ASAP :)
A small spherical insulator of mass 8.96 102 kg and charge +0.600 μC is hung by a thread of negligible mass. A charge of −0.900 μC is held 0.150 m away from the sphere and directly to the right of it, so the thread makes an angle θ with the vertical
asked by Chelsea on January 28, 2013 
CalculusMath
The speed S of blood that is r centimeters from the center of an artery is given below, where C is a constant, R is the radius of the artery, and S is measured in centimeters per second. Suppose a drug is administered and the artery begins to dilate at a
asked by Lorine on August 9, 2014 
physics
A 60 kg skier with an initial speed of 12 m/s coasts up a 2.5 m high rise that makes a 35 degree angle with the horizontal. If the coefficient of friction between the skis and the snow is .08, find the speed of the skier when he reaches the top of the
asked by Me on October 9, 2010 
Physics
an ice sled powered by a rocket engine starts from rest on a large frozen lake and accelerates at +13m/s^2. At t1, the rocket engine is shut down and the sled moves with constant velocity v until t2. The total distance traveled by the sled is 5.30*10^3 m
asked by Anonymous on September 27, 2017 
chemistry help!!!!!
Consider the following reaction: Find the equilibrium partial pressures of A and B for each of the following different values of Kp. Assume that the initial partial pressure of B in each case is 1.0 atm, and that the initial partial pressure of A is 0.0
asked by student on March 11, 2012 
math
During a scuba drive, Lainey descended to a point 20 feet below the ocean surface. She continued her descent at a rate of 20 feet per minute. Write an inequality you could solve to find the number of minutes she can continue to descend if she does not want
asked by Anonymous on October 4, 2017 
physics please help
A 5.00 kg ball (ball 1), moving to the right at a velocity of +4.00 m/s on a frictionless table, collides headon with a stationary 7.60 kg ball (ball 2). Find the final velocities of the balls if the collision is as specified below. (a) elastic collision
asked by joshua on November 7, 2010 
physics
A 220kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 26.6° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.863, and the log has an
asked by S on October 1, 2014 
Statistics
A typist at a constant speed of 65 words per minute makes a mistake in any particular word with probability 0.06, independently from word to word. Each incorrect word must be corrected, a task which takes 14 seconds per word. Find the mean of the time (in
asked by Jon on February 28, 2011 
physics
7. A drop of oil is placed on a glass block. The glass has an index of refraction of 1.55. When light shines from the glass into the droplet, total internal reflection occurs at a critical angle of 59.0(degrees).find the index of refraction of oil.(this
asked by alessandra on December 5, 2012 
Physics
Two blocks move along a linear path on a nearly frictionless air track. One block, of mass 0.120 kg, initially moves to the right at a speed of 4.90 m/s, while the second block, of mass 0.240 kg, is initially to the left of the first block and moving to
asked by Pat on October 18, 2012 
Economics/Algebra
The demand curve for a monopolist is Qd = 500  P and the marginal revenue function is MR = 500  2P. The monopoloist has a constant marginal and average total cost of $50 per unit. a. Find the monopolist's profit maximizing output and price b.Calculate
asked by too old on November 9, 2009 
statistics
Use the given information to find the minimum sample size required to estimate an unknown population mean u. How many adults must be randomly selected to estimate the mean FICO (credit rating)score of working adults in a country? We want 95% confidence
asked by anonymous on November 15, 2013 
Economics/Math
The demand curve for a monopolist is Qd = 500  P and the marginal revenue function is MR = 500  2P. The monoploist has a constant marginal and average total cost of $50 per unit. a. Find the monopolist's profit maximizing output and price b.Calculate the
asked by too old on November 8, 2009 
Algebra Quadratic EFuncyoon
David has 200m of fencing to enclose three identicle rectangular pens as shown in the figure. Let x be the length of each pen. a) express the total area of the pens in terms of x My answer: 2x^2100x (It is correct according to the answer key) b) find the
asked by Rose on August 8, 2016 
Statistics
A typist at a constant speed of 65 words per minute makes a mistake in any particular word with probability 0.06, independently from word to word. Each incorrect word must be corrected, a task which takes 14 seconds per word. Find the mean of the time (in
asked by Jon on February 28, 2011 
PreAlgerbra
I don't really understand this and my teacher at school is no help. Can anyone explain what I'm supposed to do here?  Atoms contain charged particles called protons and electrons. Each proton has a charge of +1, and each electron has a charge of –1.
asked by Katlyn on October 17, 2012 
world issues amazon deforestation
Hi. I was assigned an essay that I have to get done by 2morrow. It is about Amazon rainforest deforestation. I have to sum everything up into 3 paragraphs. 1st paragraph tell what's happening here; I already did this. 2nd & 3rd paragraphs describe how
asked by Abby on November 16, 2010 
nusyu
A small, spherical bead of mass 3.00 g is released from rest at t = 0 from a point under the surface of a viscous liquid. The terminal speed is observed to be £oT = 2.00 cm/s. Find (a) the value of the constant b that appears in Equation 6.2, (b) the time
asked by lin on October 17, 2014 
chemistry
A solution is prepared by dissolving 20.2 {\rm mL} of methanol ({\rm{CH}}_3 {\rm{OH}}) in 100.0 {\rm mL} of water at 25 ^\circ {\rm C}. The final volume of the solution is 118 {\rm mL}. The densities of methanol and water at this temperature are 0.782 {\rm
asked by aa on July 14, 2012 
English
Mr. peters comes to bed one night and find leita calling out in her sleep. how does this scene reveal her internal conflict? A. in her dream, she is talking of her fear of leaving Mr. peters. B. in her dream, she is afraid and calling for help. C. in her
asked by nebula🌌 on March 20, 2019 
mechanics
A 1200kg fuel tank is cruising at 15m/s and doesn't notice that the 800kg car right in front of it slowed down to 10m/s.the truck runs into the car in a collision that last for 0.25s.the tanker is going at 12m/s after the collision find(a)what force did
asked by Anonymous on April 2, 2017 
calculus
find max, min and saddle points of the give function f(x,y)=sin(x)+sin(y)+sin(x+y) 0
asked by Help Please on March 9, 2012 
Physics
To create artificial gravity, the space station shown in the drawing is rotating at a rate of 1.60 rpm. The radii of the cylindrically shaped chambers have the ratio rA/rB = 3.00. Each chamber A simulates an acceleration due to gravity of 9.60 m/s2. Find
asked by Redgy22 on October 6, 2012 
Response to DWRLS
I am still on this weight and elevation question. w=Cr^2 for r= r= quare root c/w Suppose that an object is 100 pounds at sea level. find the vlaue of C tat makes sense. Sea level is 3963 miles from the center of the earth. Wouldn't this be 100=C/(3963)^2
asked by Marysvoice on January 29, 2008 
physics
Blocks A, B, and C are placed as in the figure and connected by ropes of negligible mass. Both A and B weigh 27.5 each, and the coefficient of kinetic friction between each block and the surface is 0.40. Block C descends with constant velocity. Find the
asked by Abdulla on November 19, 2011 
Statistics
A typist at a constant speed of 65 words per minute makes a mistake in any particular word with probability 0.06, independently from word to word. Each incorrect word must be corrected, a task which takes 14 seconds per word. Find the mean of the time (in
asked by Jon on February 28, 2011 
Physics
A 95 gram piece of metal is heated to 98°C and placed into 200mL of water insulated at 20°C. If the equilibrium temperature is 27.20, find: The heat gained by the water. calories The specific heat of the metal. cal/(g°C) Hint: 1 mL water has a mass of 1
asked by Anna on July 9, 2016 
science
A copper calorimeter weighs 100g when empty, 400g when half full of water at 0 degrees Celsius, and 450g when ice at 0 degree Celsius is added. When some steam is passed into the mixture, its temperature is raised by 10 degrees Celsius. Find the quantity
asked by agajere on February 3, 2017 
physics
A potter's wheel having a radius 0.45 m and a moment of inertia of 14.9 kg · m2 is rotating freely at 49 rev/min. The potter can stop the wheel in 8.0 s by pressing a wet rag against the rim and exerting a radially inward force of 72 N. Find the effective
asked by heather on December 1, 2012 
math
The cross section of an attic is in the shape of an isosceles trapezoid. If the height of the attic is 9 feet, BC=12 feet, and AD=28 feet, find the length of line AB to the nearest foot. The triangle of the trapezoid is triangle ABE and the bases are BC
asked by anthony on April 11, 2009 
physics
A car is travelling 20m/s along a straight road. The driver sees a 36km/h speed limit sign 100m ahead. What constant retardation is required to reduce the speed to 36km/h in this distance. Find also the time taken by the car to reach the speed limit
asked by dillip on February 28, 2016 
Science
Describe the plant life, animal life, and geology of the ecosystem in the area in which you live. What populations and communities are present? How dependent is your community on this ecosystem? What are the limiting factors of the ecosystem? How do I find
asked by Bobby on May 21, 2008 
Physics
a ball is thrown up onto a roof, landing 4.70 s later at height h = 24.0 m above the release level. The ball's path just before landing is angled at = 62.0° with the roof. (a) Find the horizontal distance d it travels. (Hint: One way is to reverse the
asked by Antonio on September 13, 2010 
Math
Find the exact values for the lengths of the labeled segments a, b and p drawn in green, red, and blue, respectively. Note that r=3 is the radius of the circle, and s=2 is the arc length from the point (3,0) around the circle to the indicated point. (So
asked by Kayla on March 14, 2017 
physics
A spring is hung from the ceiling. A 0.536 kg block is then attached to the free end of the spring. When released from rest, the block drops 0.180 m before momentarily coming to rest, after which it moves back upward. (a) What is the spring constant of
asked by Anonymous on October 30, 2017 
Physics
A puck of mass 0.03 kg slides across rough ice, experiencing a frictional force of 0.2 N. If it was moving at 36 m/s when I hit the ice patch, A) How long did it take to stop? B) What was the length of the ice patch? I know I have initial velocity, mass
asked by Cali on October 24, 2015 
statistic
A distribution of values is normal with a mean of 110 and a standard deviation of 5. Find the interval containing the middlemost 48% of scores: Enter your answer using interval notation. Example: [2.1,5.6) Your numbers should be accurate to 1 decimal
asked by moon on January 8, 2018 
Maths
a rectangular tank measured internally is 2.5m long,1.5m wide and 0.8m high. how many litres of water are needed to fill the tank? the water in tank is transferred into small cylindrical tanks each of diamter 70cm and height 40 cm. find the number of
asked by Shehryar on July 8, 2017 
Math
How many integers bewteen 200 and 500 inclusive leave a remainder 1 when divided by 7 and a remainder 3 when divided by 4? Find the smallest positive integer that leaves a remainder 5 when divided by 7, a remainder 6 when divided by 11, and a remainder 4
asked by Annie on October 13, 2012 
geometry
in an isosceles trapezoid, ABCD, AD congruent BC. diagonal AC bisects angle DAB. if the measure of angle CAB = 15, find: the measure of angle b, measure of angle BCA, measure of ACD, and the measure of angle D
asked by kyle on May 3, 2016 
world issues
I have been looking every where for a volunteer program description. I have read my book and look on the internet and still do not understand can someone show me how to find a sample volunteer program description that works with gardening or explain what
asked by RT on April 14, 2012 
Conditional Probability
A box contains 1 green ball, 2 blue balls, and 3 red balls. These balls are selected at random, one after another without replacement, and their colors are noted. Find the conditional probability that the third ball is red given exactly one ball is red.
asked by Sarah on September 20, 2012 
calculus
A potter forms a piece of clay into a cylinder. As he rolls it, the length,L, of the cylinder increases and the radius, r, decreases. If the length of the cylinder is increasing at .1 cm per second, find the rate at which the radius is changing when the
asked by mandy on February 3, 2010 
Physics
A 0.20kg ball on a string is whirled on a vertical circle at a constant speed. When the ball is at the three o'clock position, the string tension is 16 N. Find the tensions in the string when the ball is at twelve o'clock and at the six o'clock positions.
asked by Sanjna on October 6, 2009 
math
An amount of $9000 is divided among four persons A,B,C and D. The sum of shares of A,C and D is four times the share of B. The sum of shares of B and D is equal to fourfifths the sum of shares of A and C. Find the share of D. Please help!! How to frame
asked by Suzanne on November 10, 2014 
Math
A Quadratic Word Problem If one side of a square is increased by 2 inches and an adjacent side is decreased by 2 inches, the area of the resulting rectangle is 32 square inches. Find the length of one side of the square.
asked by LP on January 4, 2013 
Geometry Help
The length of a rectangle is 2 cm more that 5 times it's width. If the area of the rectangle is 84 cm^2 find the dimensions of the rectangle to the nearest thousandth. This is what I have..is it rihgt? 5x^2+5x+284 5x^2+5x82=0 5+the square root of
asked by Jessica on October 24, 2007 
physics
A 0.190 kg projectile is fired with a velocity of +705 m/s at a 2.00 kg wooden block that rests on a frictionless table. The velocity of the block, immediately after the projectile passes through it, is +40.0 m/s. Find the velocity with which the
asked by emma on January 17, 2012 
AlgebraTrig Please Help ASAP
A balloon isin the vertical plane of two consecutive milestones of a road. The angles of depression of the stones as viewed from the balloon are 15 degrees and 17 degrees. Find the height of the balloon if (a) the stones are on opposite sides of the
asked by Candy on February 15, 2012 
algebra
Jennifer cut a board 2 m long into two pieces. One piece is 24 cm shorter than the other. Find the length of each piece. A group of backpackers hiked 38 km over three days. The first day, they hiked 1 km less than 3 times as far as the second day. The
asked by Heather M on May 28, 2008 
9th grade
it cost $2 per day to place a oneline ad in the classifieds plus a flat service fee. one day cost $3 and four days cost $9. write a linear equation that gives the cost in dollers, y, in terms of the nunber iof days,x. find the cost of a sixday ad.
asked by Amy on March 7, 2010 
probability!
so i am asked to find the prob of a male professor  given that he is promoted. and the stats are female promoted = 3% female not promoted  12% male promoted 17% male not promoted  68% and i just wrote down that it is 17% is this true? ALso, i looked up
asked by Lauren on October 19, 2010 
criminal justice
examine the public policy of the exclusionary rule with respect to the 5th Amendment requirement of selfincrimination. Your explanation should include an assessment of the major U.S. Supreme Court cases that have contributed to applying the rule to police
asked by joanna on November 15, 2014 
Biology
1. Mitochondria and chloroplasts reproduce the same way freeliving bacteria do—by _____________. My answer: Binary fission. 2. The tropism that allows seedlings to find their way out of the soil and into the sunlight is _________________. My answer:
asked by ciara on October 23, 2014 
business communication
can you plz correct it Howdy comrades! Shouldn’t surprise anyone that we took a beating this year, given the insane pricing moves our knucklehead competitors have been making. I mean how those clowns can keep turning a profit is beyond me, what with
asked by sara on July 10, 2013 
algebra
A 28inch board is to be cut into three pieces so that the second piece is twicetwice as long as the first piece and the third piece is 44 times as long as the first piece. If x represents the length of the first piece, find the lengths of all three
asked by Anonymous on October 4, 2015 
Physics
A block of mass 3m is placed on a frictionless horizontal surface, and a second block of mass m is placed on top of the first block. The surfaces of the blocks are rough. A constant force of magnitude F is applied to the first block. Assume that the upper
asked by Oyster on September 24, 2012 
Math (fractions)
I am not being lazy, I've tried to get this done several times, but I am VERY bad when it comes to fractions. Barbara, Donna, Cindy, and Nicole ran in a relay race. Barbara: 3 3/10 Donna: 2 4/5 Cindy: 3 2/5 Nicole: 2 1/10 1. The four girls ran in a relay
asked by A Person That Would Like Some Help on May 31, 2017 
Math
You have a balance of $7500 on your credit card and you make no further charges. If your APR is 12.5% and each month you make only the minimum payment of 5% of your balance, then find a formula for the balance after t monthly payments. A) 7500(0.959896) t
asked by matt on January 30, 2016 
Algebra
2. Find the value of x^3 +2x^2 3 when x =3 Answer42 12. What type of correlation would you expect between the number of minutes a candle burns and the height of the candle? a. no correlation b. positive correlation c. negative correlation d. equal
asked by lizzie on August 7, 2011 
MATH HELP ASAP
Please Help!! Louis is planning to mow a rectangular yard that is 20 feet longer than it wide. He wants to find its width if its area is 1125 square feet. Which equation models this problem? A. 20w2 = 1125 B. w2 + 20w = 1125 C. w2 – 20w = 1125 D. w + 20w
asked by Skye on May 19, 2014 
steev
can u help this the qustion is : A circle passes through the points (1,4)&(5,0) and its centre lies on the line x+y3=0.Find (i) the equation of the circle and it parametric equations . (ii) the centre,diameter and area of the circle . (iii) the equation
asked by math on December 28, 2011 
Finance
You have a balance of $7500 on your credit card and you make no further charges. If your APR is 12.5% and each month you make only the minimum payment of 5% of your balance, then find a formula for the balance after t monthly payments. A) 7500(0.959896) t
asked by Math on June 28, 2015 
math
can u help this the qustion is : A circle passes through the points (1,4)&(5,0) and its centre lies on the line x+y3=0.Find (i) the equation of the circle and it parametric equations . (ii) the centre,diameter and area of the circle . (iii) the equation
asked by steev on December 28, 2011 
physics
1) The figure below shows the position of a particle versus time, with each line on the vertical axis representing 4.6 m. Find the average velocities for the time intervals a, b, c, and d indicated in the figure. 1. ___________ m/s (time interval a) 2)
asked by amanda on February 11, 2018 
Physics
An 83.2kg propeller blade measures 2.24m end to end. Model the blade as a thin rod rotating about its center of mass. It's initially turning at 175rpm. Find the blade's angular momentum, the tangential speed at the blade tip, and the angular acceleration
asked by Jessica on November 11, 2011 
Physics urgent pls!
A ball is tossed from an upperstorey window of a building.The ball is given an initial velocity of 8 m/s at an angle of 20 degrees below the horizontal.it strikes the ground 3s later .(a) How far horizontally from the base of the building does the ball
asked by Sammie on February 22, 2013 
phyics
i need help setting it up to find the answers. (answers included) two masses are connected together by a string which is then hung over a pulley. m1= 7.50 kg and m2= 6.50 kg. before they are released m1 is suspended h= 135cm above the floor while m2 is
asked by danielle on November 1, 2010 
physics
A water slide is constructed so that swimmers, starting from rest at the top of the slide, leave the end of the slide traveling horizontally. As the drawing shows, one person hits the water 5.00 m from the end of the slide in a time of 0.386 s after
asked by riley on October 10, 2011 
physics
An 83.2kg propeller blade measures 2.24m end to end. Model the blade as a thin rod rotating about its center of mass. It's initially turning at 175rpm. Find the blade's angular momentum, the tangential speed at the blade tip, and the angular acceleration
asked by Tyler on November 12, 2011 
physics
An 83.2kg propeller blade measures 2.24m end to end. Model the blade as a thin rod rotating about its center of mass. It's initially turning at 175rpm. Find the blade's angular momentum, the tangential speed at the blade tip, and the angular acceleration
asked by Tyler on November 12, 2011 
Algebra
Find the equation of the line and write your answer in the slopeintercept form. 1. Has a yintercept of 5 and a slope of 2. Has a slope of 5 and a yintercept of 2/3. 3. Has a slope of 3 and contains (4,9). 4. Has a slope of 4/9 and contains (0,2) 5.
asked by Mitch on November 28, 2012 
math
A particle travelling along a straight line starts with a velociry ofu metres per second and its speed increases per second by rl metres. The particle travels 10 metres in 2 seconds and 28 metres in 4 seconds. Find u and a. (lf the distance travelled in I
asked by noushil on November 28, 2015 
Trigonometry
Round answer to two significant digits. An airplane flew 300 miles at a bearing of N65°E from airport A to airport B. The plane then flew at a bearing of S38°E to airport C. Find the distance from A to C if the bearing from airport A to airport C is
asked by Karen on October 22, 2014 
ap physics
a man is on the ground level on a compressed spring. the man has a mass of 60kg and the spring is compressed 0.5 and has a spring constant of 500nm. a)what is the maximum height will the man achieve and the spring decompresses? B)find the velocity right
asked by Steph on January 27, 2011 
math
Plane A which contains an isosceles right triangle forms a dihedral angle of 60 degrees with another plane B. If the hypotenuse of the triangle lies in plane B and measures 8 in., find the distance from the vertex of the right angle to plane B, and the
asked by nexan umbod on January 14, 2017
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