
PHYSICSSS
A train engine pulls out of a station along a straight horizontal track with five identical freight cars behind it, each of which weighs 88.0 kN. The train reaches a speed of 13.0 m/s within 6.50 min of starting out. Assuming the engine pulls with a
asked by Anonymous on February 11, 2012 
PHYSICS
A 578 Newton person takes an elevator from the first floor to the second floor of a building. The elevator quickly accelerates at a rate of 1.1 m/s^2 and then moves at a constant speed. Find the passenger's apparent weight during this period of
asked by GRISSELL on February 5, 2012 
Algebra
I'm having trouble working out these problems. Could someone please assist? with this first one do I factor the x^2 + 3xy  18y^2 first? x  3y * x^2 + xy  30y^2 / x^2 + 3xy  18y^2 3a^3b^2 * 4a^2 + 2ab + b^2 8a^3  b^3 12ab^4 3y + 12 / 9y+36 8y^3 16y^3
asked by Susan on July 14, 2006 
statitstics
A warehouse employs 22 workers on first shift and 14 workers on second shift. Eight workers are chosen at random to be interviewed about the work environment. Find the Probability of choosing: A. All firstshift workers B. All secondshift workers C. Six
asked by latarsha on February 5, 2013 
Calculus
The problem I have is a summation from 1 to infinity for (1)^n/n. I have to find a partial sum that is in 0.001 of the infinite sum, my teacher says the fourth partial sum approximates the infinite sum, which is 7/12. I think to get within 0.001 of the
asked by Sophie on May 5, 2009 
Calculus
Use analytical methods to find the exact global maximum and minimum values of the function f(x)=8xln(4x) for x >0. If a global maximum or minimum does not exist, enter the word NONE. For the global maximum at x=none, But for the Global minimum at x=? Is
asked by George on October 16, 2008 
Calc
A particle moves along the xaxis in such a way that it's position in time t for t is greator or equal to 0 is given by x= 1/3t^3  3t^2 +8 A) show that at time t= 0 the particle is moving to the right. B) find all values of t for which the particle is
asked by Nicole on January 25, 2013 
Calc
A particle moves along the xaxis in such a way that it's position in time t for t is greator or equal to 0 is given by x= 1/3t^3  3t^2 +8 A) show that at time t= 0 the particle is moving to the right. B) find all values of t for which the particle is
asked by Aparna on January 27, 2013 
Physics
A baseball is his so that a travel straight upward after being struck by the bat. A fat observes that it takes three seconds for the ball to reach its maximum height. Find the balls initial velocity and the height it reaches. my professor showed a similar
asked by Lauren on September 9, 2016 
english
hey people!! im new here and i just got an essay to do on english altough its the first day of school!! please guys i really need your help.. its a essay on the following topics: 1summer 2love is not all it's made out to be 3a glorious sunset 4stories
asked by wayne on January 21, 2009 
english
Can someone explain to me what a sub claim is and give me an example All I can find is that it is a part, or claim on an argument. Example: Bob Pursley is growing senile.....arguement He eats unpeeled bananas sub claim He does not look back when
asked by jessica on July 17, 2006 
math
what formulas do i use for this: Investments Suppose $10,000 is invested at an annual rate of 5% for 10 years. Find the future value if interest is compounded as follows. A) Annually B) Quarterly C) Monthly D)Daily (365 days) In each case, use the formula
asked by student on June 19, 2007 
physics
A car is driving in the negative X direction at a steady speed of 15 m/s. if it starts at a position of 30m: What is its displacement in the first second? My answer was 15m and used XfXo (finalinitial) to find the displacement What is his displacement in
asked by Matt on September 21, 2016 
Statistics
smith is a weld inspector at a shipyard. he knows from keeping track of good and substandard welds that for the afternoon shift 5% of all welds done will be substandard. If Smith checks 300 of the 7500 welds completed that shift, would it be unusual for
asked by Samantha on December 1, 2013 
Physics
A race car can be slowed with a constant acceleration of 11 m/s^2 a. If the car is going 55 m/s, how many meters will it travel before it stops? b. How many meters will it take to stop a car going twice as fast? I know you use the equation d = Vit +1/2
asked by Priscilla on December 26, 2009 
algebra
An airplane traveled from Boston to Las Vegas making a stop in St. Louis. The plane traveled 2410 miles altogether, which is 230% of the distance from Boston to St. Louis. Find the distance from Boston to St. Louis to the nearest mile. The answer is 1048
asked by 1carriebear on August 27, 2011 
math
if john had an unpaid balance of $1,854.80 on his credit card statement at the beginning of the month and he made a payment of $45.00. If the interest rate of john's card wasw 2.5% on the unpaid balance per month. find the finance charge and the new
asked by kk on September 9, 2011 
Math
I am supposed to find the slope and y intercept of x=9 Just waned to verify, but the line would be vertical and so the slope is undefined, but because the line never croses the yaxis how would you verbially say this. Would the y intercept be undefined or
asked by Russell on April 22, 2007 
algebra
Pick a country of your choice that is experiencing population growth. Using the Library, web resources, and/or other materials to find the most recent population count of the country you have chosen and the population growth rate of that country. Use that
asked by lee on December 6, 2007 
College Alg
The intensity I of an xray after it has passed through a material that is x centimeters thick is given by I = I0e^–kx, where I0 is the initial intensity of the xray and k is a number that depends on the material. The constant k for copper is 3.2. Find
asked by Dale on November 6, 2016 
Math
bill and laura borrowed $15 000 at 6 per annum compounded monthly for 30 years to purchase a home. Their monthly payment is determined to be $899.63. Find a recursive formula for their balance after each monthly payment has been made. Determine Bill and
asked by Leticia on December 10, 2012 
Chemistry HELP
Not all enzymes have an optimum temp of around 40 degrees celcius. Find out where reactions involving enzymes: would take place at very high temperatures would take place at very low temperatures i've tried looking on the internet, but I get a lot of
asked by Jess on February 14, 2008 
math
there's a circle inside of a square like this: donlehmanjrcom/Tai%20Chi/Tai%20Chi%20Newsletters/excerpts11%20images/image001.png (add the period before the com) the circle has a radius of 2 in and an area of 12.56 in^2 how do i find the area of the space
asked by vic on May 14, 2016 
math
A manufacture has been selling 1300 television sets a week at 450 each. A market survey indicates that for each 14 rebate offered to a buyer, the number of sets sold will increase by 140 per week. a) Find the demand function , where is the number of the
asked by Jim on October 9, 2011 
AP Language and Composition
I am writing a paper on the book The Great Gatsby by F. Scott Fitzgerald and my thesis is "In the Great Gatsby, F. Scott Fitzgerald shows us that material obsession often leads to the decay of ones soul." Does anyone know anywhere i can find sources
asked by Amanda on September 16, 2010 
chemistry
The enthalpy of solution of nitrous oxide (N2O) in water is 12 kJ/mol and its solubility at 20 oC and 1.00 atm is 0.121 g per 100. g of water. Calculate the molal solubility of nitrous oxide in water at 1.600 atm and 20 oC. Hint, first find Henry's law
asked by Raoul on May 3, 2014 
CHEMISTRY
The enthalpy of solution of nitrous oxide (N2O) in water is 12 kJ/mol and its solubility at 20 oC and 1.00 atm is 0.121 g per 100. g of water. Calculate the molal solubility of nitrous oxide in water at 1.600 atm and 20 oC. Hint, first find Henry's law
asked by Raoul on May 4, 2014 
CHEMISTRY
The enthalpy of solution of nitrous oxide (N2O) in water is 12 kJ/mol and its solubility at 20 oC and 1.00 atm is 0.121 g per 100. g of water. Calculate the molal solubility of nitrous oxide in water at 1.600 atm and 20 oC. Hint, first find Henry's law
asked by Raoul on May 4, 2014 
physics
The length of the auditory canal in humans averages about 2.5 cm. What is the second lowest standing wave frequency for a pipe of this length open at one end? Use 345 m/s for the speed of sound. I know that 4L=lambda, so lambda= 10cm. I know that
asked by Trace on March 3, 2011 
physics
what equation would you use if you wanted to find the net xdirection force on the box example: here is the problem... A box of mass 24.0 kg is subject to an applied force of 245 N with a depression angle of 31.2°, and it accelerates to the right. The
asked by andrew on December 5, 2010 
mathneed help
A right rectangular tank with a 12 unit by 8 unit base is filled with water to a depth of 5 units. The water rises 1.5 units when a solid cube is completely submerged in the tank. In simplest radical form, the edge of the cube is k*cube root of w units.
asked by jujube on January 21, 2008 
math
A rectangular sheet of metal, of area 440 sq.cm is folded into a cylinder, to enclose a volume of 1540 cu.cm. A circle whose diameter is equal to the width of the rectangular sheet is cut from the sheet. Find the ratio of the area of the uncut region to
asked by rajshekhar on February 1, 2010 
Riddle
IF YOU HAVE READ HARRY POTTER YOU ARE NOT ALLOWED TO ANSWER!!!!!!!!!!! A person in disguise, who tells naught but lies The middle of middle and the end of the end The sound often heard when searching for a hard to find word. ONE WORD ANSWER! a wand A wand
asked by Amanda on November 2, 2006 
Algebra
The RideEm Bicycles factory can produce 140 bicycles in a day at a total cost of $10,200 and it can produce 160 bicycles in a day at a total cost of $10,900. What are the company's daily fixed costs? What is the marginal cost per bicycle?(How do I find
asked by Sandie on February 19, 2012 
phyics
Objects of equal mass are oscillating up and down in simple harmonic motion on two different vertical springs. The spring constant of spring 1 is 175 N/m. The motion of the object on spring 1 has twice the amplitude as the motion of the object on spring 2.
asked by MATT on November 12, 2013 
math
The cottage will be built on a concrete slab 100 mm thick. Concrete costs $150/m^3 and reinforcing mesh for the slab costs $7/m^2. Find the cost of materials for the slab. Both the concrete and the reinforcing mesh will be ordered in lots of whole units.
asked by Anonymous on October 6, 2018 
maths (it's urgent)
the path of the rocket is represented by the equation y= root under(25x)^2. the path of a missile designed to intrersect the path of the rocket is represented by the equation x = 3/2 root under (y). the value of x at the point of intersection is 3. what
asked by jess on November 4, 2008 
Physics
Two dogs pull horizontally on ropes attached to a post; the angle problem 1 between the ropes is 60.0 degrees. If dog A exerts a force of 270N and dog B exerts a force of 300N find the magnitude of the resultant force and the angle it makes with dog A's
asked by Sarah on June 8, 2009 
Math
Can someone help? The way the question is worded is confusing me. You earn 10 points for every coin you collect in a video game. Then you find a star that triples your score. a. write an expression for the number of points you earn from the coins. b. write
asked by Someone that needs help! on November 14, 2017 
physics help!
Objects of equal mass are oscillating up and down in simple harmonic motion on two different vertical springs. The spring constant of spring 1 is 155 N/m. The motion of the object on spring 1 has twice the amplitude as the motion of the object on spring 2.
asked by meagan on November 19, 2011 
physics
An object rests on the surface of planet y. Its mass is unknown. Find the acceleration due to gravity near the surface of planet y. Answer in m/s/s. G=6.673x10^23 radius of planet y=2439700m mass of planet y=3.302x10^23kg radius of planet x=71492000m mass
asked by camille on April 10, 2011 
chemistry
In a buffer prelab, we were asked to complete a table for 10 test tubes. In tube 1, you had 0.20 M of acetic acid only and were asked to find the pH. I think the answer is 2.72 (using a ICE table). In tube 2, you have 90 mL of Acetic Acid and 10 mL of
asked by Trina on May 16, 2011 
triganometry
A landscape architect is designing a triangular garden to fit in the corner of a lot. The corner of the lot forms an angle of 50°, and the sides of the garden including this angle are to be 12 feet and 14 feet, respectively. Find, to the nearest integer,
asked by Ayesha on March 18, 2012 
engineering physics 1science
A crate of mass m(=32 kg) rides on the bed of a truck attached by a cord to the back of the cab . The cord can withstand a maximum tension of 68N before breaking. Neglecting friction between the crate and the truck bed, find the maximum acceleration the
asked by Endes Nalabaw on August 9, 2015 
Math
7. Find the mean, median, and mode of the data set. Explain which measure of central tendency best describes the data. pages of homework: 2 2 2 5 3 9 7 3 5 2 8. You are training for a marathon. On the first three days of training, you run for 2, 4, and 5
asked by Jo on May 4, 2018 
Physics
a 96 kg clock initially at rest on a horizontal floor requires a 605 N horizontal force to set it in motion. After the clock is in motion a horizontal force of 547 N keeps it moving with a constant velocity. the acceleration of gravity is 9.81 m/s2 find
asked by Susan on October 11, 2012 
Physics
A crate of mass m = 31 kg rides on the bed of a truck attached by a cord to the back of the cab as in the figure. The cord can withstand a maximum tension of 82 N before breaking. Neglecting friction between the crate and truck bed, find the maximum
asked by Kelly on October 9, 2012 
algebra
can someone please help me with my algebra? you don't have to answer every question but I'm very confused, this is algebra 1b unit 6 sample work simplify the rational expressions. state any excluded values 1. 36x^3 / 42x^2 2. 70n^2 / 28n 3. 2r4 / r2 4.
asked by help on June 12, 2019 
Math
water accounts for about 60% of a person's body weight. a. write an equation that represents the water y of a person who weights x pounds. identify the independent variable and the dependent variable. b. make an inputoutput table for the equation in part
asked by Jacob on February 9, 2018 
calculus
(Use the fact that the kinetic energy of a particle of mass "m" moving at speed "v" is (1/2)m(v^2). Slice objects into pieces in such a way that the velocity us approximately constant on each piece.) Q: Find the kinetic energy of a rod of mass 10kg and
asked by mike on October 28, 2012 
Physics
A square conducting loop with sides of length L is rotation at a constant angular speed of, w (omega), in a uniform magnetic field of magnitude B. At time t=0, the loop is oriented so that the direction normal to the loop is aligned with the magnetic
asked by Jasmine on November 14, 2011 
Physics
A square conducting loop with sides of length L is rotation at a constant angular speed of, w (omega), in a uniform magnetic field of magnitude B. At time t=0, the loop is oriented so that the direction normal to the loop is aligned with the magnetic
asked by Jasmine on November 13, 2011 
Physics (Rotational Kinetic Energy)
Hello, The question is: A solid ball rolls along the floor with a constant linear speed v. Find the fraction of its total kinetic energy that is in the form of rotational kinetic energy about the center of the ball. Krot/Ktotal = ? The answer I keep
asked by Ben on October 21, 2009 
Writing Sources
I am trying to prove why I think parents having a child reduces their rate of commiting a crime. My basic reasoning is that most parents love their new child and start to realize that they need to better their life in order for their childeren to have the
asked by Rebekah on October 26, 2017 
Math, Trig/Pre Calc
You have been asked to build a ramp for Dan’s Daredevil Motorcycle Jump. The dimensions you are given are indicated below. Find the height and incline in feet. Round to the nearest foot One side is 200 ft.The angle between the hypotenuse and the side of
asked by Sarah Blanchard on October 24, 2014 
Technical wrtiting
Internet Source Distortion/Misrepresentation From media,or the Internet, identify an example of each of the following sources of distortion (faulty causal and/or statistical inference) a. A study with questionable sponsorship or motives b. Reliance on
asked by Amy on October 10, 2015 
Physics
A square conducting loop with sides of length L is rotation at a constant angular speed of, w (omega), in a uniform magnetic field of magnitude B. At time t=0, the loop is oriented so that the direction normal to the loop is aligned with the magnetic
asked by Jasmine on November 13, 2011 
Physics
A square conducting loop with sides of length L is rotation at a constant angular speed of, w (omega), in a uniform magnetic field of magnitude B. At time t=0, the loop is oriented so that the direction normal to the loop is aligned with the magnetic
asked by Jasmine on November 13, 2011 
Math
A machine produces open boxes using rectangular sheets of metal (12in by 20in). The machine cuts equalsized squares from each corner, and then shapes the metal into an open box by turning up the sides. Express the volume of the box V(x) in cubic inches as
asked by Faith on October 16, 2016 
physics
find the mean free path of the molecule of oxygen at normal pressure, if the coefficient of diffusion of oxygen at the same pressure and temperature of 0 ° C is equal to 0,19 cm ² / sec. найти среднюю длину свободного
asked by lisa on March 29, 2011 
Algebra
nicole is a jewellery designer. she handcrafts all the jewellery she sells online. with every successful sale, she would make a profit of $30; however, if she makes a mistake during the process, she will lose $10. Nicole is starting work on her next batch
asked by Michelle on June 15, 2016 
Calc
A paper cup is to be designed in the shape of a right circular cone. It must have a capacity of 12 fluid ounces (1 fluid ounce = 1.80469 cubic inches) of soft drink but it must use a minimum amount of material in its construction. What should the
asked by jo on July 30, 2012 
Math
1) Stephanie earned $x while working 10 hrs. Evelyn earned $y while working 29hrs. If they both earn the same hourly wage and x+y=60, how many dollars did Stephanie earn? 2)the difference of the areas of two circles is 21pi. If their radio are r+3 and r,
asked by Aline on March 2, 2018 
Chemistry
Here's a molar heat problem I just have one question on. How much heat will be transferred if 2 moles of hydrogen reacts with excess oxygen according to the reaction below? 2H2 + O2 yields 2H20 + 572 kJ The answer according to my answer key is 2 mole H2 x
asked by Tabetha on May 18, 2009 
English
Can you check the meaning of these few phrasal verbs, please? Thank you In the beginning I dislike my classmates but then I came around thinking they aren't so bad. Can you drop in on me after school. I need to talk to you. My plan to go to the mountains
asked by Henry1 on May 11, 2011 
physics
найти среднюю длину свободного пробега молекулы кислорода при нормальном давлении, если коэффицент диффузии кислорода при том же давлении
asked by lisa on May 29, 2011 
math
Let's say you are standing on top of a mountain looking down at the valley below, where you can see cars driving on a road. You stretch out your arm, use your thumb to "sight" a car, and find that the car appears to be as long as your thumb is wide.
asked by Chelsea on November 11, 2012 
math
Use the information below to write and simplify an expression to find the total weight of the medals won by the top medalwinning nations in the 2012 London Olympic Games. The three types of medals have different weights. U.S.A. Gold=46 Silver=29 Bronze=29
asked by Sam on February 24, 2015 
Physics
A 6 kg rock is suspended by a massless string from one end of a 6m measuring stick. What is the mass of the measuring stick if it is balanced by a support force at the 1m mark? answer in units of kg. Thanks for any help Rather than just posting the
asked by Stu on April 26, 2007 
physic
A box of mass 2 Kg lies on a rough horizontal floor with the coefficient of friction between the floor and the box being 0.5 (Figure 3). A light string is attached to the box in order to pull the box across the floor. If the tension in the string is TN,
asked by zainab on March 25, 2014 
business research
You conduct a survey of a sample of 25 members of this year’s graduating marketing students and find that the average GPA is 3.2. The standard deviation of the sample is 0.4. Over the last 10 years, the average GPA has been 3.0. Is the GPA of this
asked by gail on September 9, 2009 
English
Identify the main conflict from "the fall from the house of usher " and show what it reveals about the story's protagonist . I have studied this story and I'm not able to find one main conflict, I have found a couple but none add up to the point of what it
asked by Michele on September 20, 2016 
physicsHELP
a giant robot tosses a ball up, from a height of 80 meters, with an initial velocity of Vo = 60 m/s, use 10 m/s^2 as the acceleration due to gravity. what will be the minimum velocity of the ball and when and where will that occur? [i don't know how you
asked by jel on October 9, 2007 
Business research
You conduct a survey of a sample of 25 members of this yearï¿½s graduating marketing students and find that the average GPA is 3.2. The standard deviation of the sample is 0.4. Over the last 10 years, the average GPA has been 3.0. Is the GPA of this
asked by Shari on June 12, 2010 
physics
a small bead can slide without friction on a circular hoop that is in a vertical plane and has a radius of 0.100 m. The hoop rotates at a constant rate of 3.00 rev/s about a vertical diameter. Find the angle beta at which the bead is in vertical
asked by bob on October 24, 2011 
physics
A 0.101 kg meter stick is supported at its 40 cm mark by a string attached to the ceiling. A 0.68 kg object hangs vertically from the 6.61 cm mark. A second mass is attached at another mark to keep it horizontal and in rotational equilibrium. If the
asked by Lor on February 8, 2012 
math
Can someone help me figure this out. The difference of two numbers is 80. The second is 8 less than 5 times the first. What are the two numbers? first write an equation 5x8=y and then solve it Tiff gave you part of the solution. 5x8=y However, there is
asked by jessica on May 7, 2007 
Physics
3. Think about this pulling scenario: A 60 N force pulls three boxes across a surface with no friction. T1 is the tension force the rope on the left pulls with at both ends, and T2 is the force the rope on the right pulls with on both ends. (a) Draw
asked by Ke on March 4, 2015 
Statistics
Suppose that in the city in which the survey is conducted, 50% of adults are married, 15% are single, 25% are divorced, and 10% are widowed. a. Assign probabilities to each simple event in the sample space. b. Which approach did you use in part (a)? Find
asked by XYZ on February 4, 2016 
Physics
a train takes 5 minutes to cover a distance of 3 km between two stations p and q . Starting from rest at p , it accelerate at a constant rate to a speed 40 km/h and maintain this speed untill it is brought to rest at q . If train takes 3 times as long to
asked by Anver on July 7, 2017 
Current Events
Where would be a good place to find a current event article that I can follow from now til about Dec.? Thanxs for any help. Any newspaper, newsmagazine, and/or their websites would be good. http://www.latimes.com http://www.nytimes.com http://www.chron.com
asked by Soly on August 29, 2006 
Statistics
A random sample of 16 midsized cars tested for fuel consumption gave a mean of 26.4 kilometers per liter with a standard deviation of 2.3 kilometers per liter. i) Assuming that the kilometers per liter given by all midsized cars have a normal
asked by Nesa on May 11, 2012 
Science
a train takes 5 minutes to cover a distance of 3 km between two stations p and q . Starting from rest at p , it accelerate at a constant rate to a speed 40 km/h and maintain this speed untill it is brought to rest at q . If train takes 3 times as long to
asked by Anonymous on July 7, 2017 
Physics
A rescue helicopter lifts a 65 kg person straight up by means of a cable. The person has an upward acceleration of 0.70 m/s2 and is lifted from rest through a distance of 13 m. (a) What is the tension in the cable? N (b) How much work is done by the
asked by Brandon on October 29, 2008 
Physics
A calorimeter with specific heat of 490x10^2J/kg^1K^1 has a mass of 2.00x10^1kg that contains 3.00x10^1kg of liquid water at 40C. If 5.00x10^2kg of ice at 0C is dropped into the water. Find the final temperature of the mixture where the ice has melted
asked by Tsunayoshi on February 9, 2014 
math
(please explain with brief explanation) The area of a rectangular field is 2000 sq.m and its perimeter is 180m. Form a quadratic equation by taking the length of the field as x and solve it to find the length and breadth of the field. the length and
asked by Nithin on September 2, 2014 
Physics
A rescue helicopter lifts a 65 kg person straight up by means of a cable. The person has an upward acceleration of 0.70 m/s2 and is lifted from rest through a distance of 13 m. (a) What is the tension in the cable? N (b) How much work is done by the
asked by Brandon on October 15, 2008 
Physics
A 5.50kg ball, moving to the right at a velocity of +2.35 m/s on a frictionless table, collides headon with a stationary 7.60kg ball. Find the final velocities of the balls if the collision meet the following conditions. (a) elastic 5.5kg ball =
asked by Anonymous on March 26, 2013 
business
You conduct a survey of a sample of 25 members of this year’s graduating marketing students and find that the average GPA is 3.2. The standard deviation of the sample is 0.4. Over the last 10 years, the average GPA has been 3.0. Is the GPA of this
asked by joi on March 11, 2010 
Physics
A 1300 kg El Camino is parked on a 20 degree hill.(20 degrees above x axis)The driver of the El Camino returns, starts the car, and accelerates up the hill at 2 m/s^2. Find SigmaFx and SigmaFy. What is the normal Force acting on the car, and what is the
asked by Jose Luis on October 12, 2015 
calculus
The side of a square is measured to be 12 inches with a possible error of ±0.02 inch in that measurement. If x is the exact length of the side of the square, express this difference as an absolute value inequality and solve. Then find the interval
asked by rachel on August 29, 2011 
Algebra
Consider the equation: 4x^2 – 16x + 25 = 0 (a) Show how to compute the discriminant, b^2 – 4ac, and then state whether there is one realnumber solution, two different realnumber solutions, or two different imaginarynumber solutions. (b) Use the
asked by Tammie on July 8, 2009 
uh manoa
A basket of neglible wieght hangs from a vertical spring scale of constant force 1500N/m. If you sundally put a 3.0 Kg adobe brick in the basket, find the maximum distance that the spring will stretch. If, instead, you released the brick from 1.0 m above
asked by luis on June 8, 2011 
Algebra
Consider the equation 4x^2 – 16x + 25 = 0. (a) Show how to compute the discriminant, b^2 – 4ac, and then state whether there is one realnumber solution, two different realnumber solutions, or two different imaginarynumber solutions. (b) Use the
asked by Pamela on July 7, 2009 
math
In Ali garden, he wants to build a concrete fountain. So he consults two different companies who provides concrete pours: Alibaba's Concrete (charges $700 plus $20/m^3 of concrete) and Baborina's Concrete ($1200 plus $15/m^3 of concrete). Let x be the
asked by doni on May 17, 2017 
physics work and energy
A basket of neglible wieght hangs from a vertical spring scale of constant force 1500N/m. If you sundally put a 3.0 Kg adobe brick in the basket, find the maximum distance that the spring will stretch. If, instead, you released the brick from 1.0 m above
asked by Anonymous on June 8, 2011 
Physics
A rescue helicopter lifts a 70 kg person straight up by means of a cable. The person has an upward acceleration of 0.70 m/s2 and is lifted from rest through a distance of 9 m. What is the tension in the cable? How much work is done by the tension
asked by Jennifer on February 22, 2015 
Physics
A rescue helicopter lifts a 65 kg person straight up by means of a cable. The person has an upward acceleration of 0.70 m/s2 and is lifted from rest through a distance of 13 m. (a) What is the tension in the cable? N (b) How much work is done by the
asked by Brandon on October 14, 2008 
Physics
A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 20.0 m/s, the block hangs vertically down. But when the van maintains this same speed around an unbanked curve (radius = 83.9 m), the block swings
asked by Thien on October 6, 2012 
calculus
Could someone help me et up this problem? Two people start from the same point. one walks east at 3mi/h and the other walks northeast at 2mi/h. How fast is the distance between the poeple changing after 15 minutes? I think this is what I would do::: First
asked by Anonymous on March 30, 2009
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