1. Physics (Center of Gravity)

    In a lab in my physics class, we were supposed to find the CG of my physics teacher. My partner and I had him lie flat on a wooden (assumed uniform) board that was resting on top of two PVC pipes at either end. Since the PVC pipes acted as the base of

    asked by Brittany on May 10, 2010
  2. English

    .the subject of the sentence is first person, then the verb must be in what form? third person second person fourth person first person Question 2 Verbs indicate what? location punctuation history time Question 3 Verbs may also indicate what? use date

    asked by christopher on April 20, 2010
  3. History

    A one-page letter to be sent to both the Cuban and the U.S. governments in which you explain why they should encourage American tourism in Cuba. Be sure to explain how both countries can benefit from this cultural exchange and how it will help the Cuban

    asked by Anonymous on January 22, 2016
  4. Astronomy

    Imagine that you are on a mission to explore a pulsar type star. What will you find there on pulsars and pulsar planets. Using this information, describe what you might encounter on your space mission. Be sure to include references of your sources. Be

    asked by Ron on May 15, 2007
  5. physics

    A cardiologist uses an ultrasound scanner with an operating frequency of 3.5 MHz that can detect Doppler frequency shifts as small as 0.1 kHz. What is the smallest flow velocity detectable with this device? Two frequencies are given so I know I have to

    asked by Sarah on October 19, 2013
  6. Physics

    A 24.5-kg child is standing on the outer edge of a merry-go-round which has moment of inertia 989 kg • m2 and radius 2.40 m. The entire system is initially rotating at 0.180 rev/s. Find the angular velocity if the child moves to a final position 1.10 m

    asked by Anonymous on November 21, 2014
  7. English

    I have to write an outline on The Sun Also Rises by Ernest Hemingway, and I can't seem to find an appropriate thesis statement for such a paper. I was hoping someone could help me. I was thinking something along the lines of: In The Sun Also Rises,

    asked by Ethan on January 19, 2011
  8. calculus help work

    a force of 1250 pounds compresses a spring 5 inches from its natural length. find the work done in compressing the spring 8 additional inches. f=kd 1250=k5 k=250 then what do i do. i have to do this the calculus way, not the physics way. by using integrals

    asked by david on January 8, 2007
  9. Physics please help

    A 195.0-N sign is suspended from a horizontal strut of negligible weight. The force exerted on the strut by the wall is horizontal. Draw an FBD to show the forces acting on the strut. (Do this on paper. Your instructor may ask you to turn in this work.)The

    asked by Amy on May 21, 2012
  10. physic

    A pair of students are lifting a heavy trunk on move-in day. (Figure 1) Using two ropes tied to a small ring at the center of the top of the trunk, they pull the trunk straight up at a constant velocity v⃗ . Each rope makes an angle θ with respect to

    asked by physic ----please help on October 23, 2014
  11. Chemistry - Titrations

    What volume (mL) of 0.2650 N H3PO4 is required to neutralize: a) 35.25 mL of 0.2300 M KOH b) 19.14 mL of 0.2300 M NH4OH Unfortunately, the teacher didn't get the opportunity to teach us titrations in class today, but this problem (and more) are still due

    asked by melbell on September 29, 2014
  12. criminal procedure

    8. A journalist is being compelled to reveal a confidential source of information, but the source would be useful to the government in a criminal investigation, or helpful to a criminal defendant at trial. What constitutional issues are involved? Should

    asked by justin on January 19, 2011
  13. chemistry

    I posted this question last night but did not get an answer- I am posting again because I have an exam I am studying for and do not understand this concept! Thanks! Using the given data, and the table of Standard Reduction Potentials, find the standard

    asked by kellie on August 3, 2012
  14. English 1

    Why do some readers choose to join reader groups? A. Groups offer opportunities to discuss interesting topics in literature.*** B. Groups allow readers to find out the ends of stories without reading. C. Groups usually give away free books to their regular

    asked by Summer Moriarty on August 26, 2016
  15. economics

    supose the following demand and cost function of duopoly firm x=40-0.2p where x=x1+x2 c1=50+2x1+0.5x12 c2=100+10x2 drive riaction function find cournot equilibrium quantity and price calculate the equilubrium price and output of each firm assume firm 1 is

    asked by rediet on August 6, 2018
  16. physic

    A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 8.50 m/s at an angle of 15.0° below the horizontal. It strikes the ground 3.00 s later. (a) How far horizontally from the base of the building does the

    asked by mark on February 3, 2016
  17. Math

    Solve the given equation in the interval [0,2 pi]. Note: The answer must be written as a multiple of pi. Give exact answers. Do not use decimal numbers. The answer must an integer or a fraction. Note that pi is already provided with the answer so you just

    asked by Bryan on November 30, 2007
  18. Physics

    A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 9.40 m/s at an angle of 21.0° below the horizontal. It strikes the ground 6.00 s later. (a) How far horizontally from the base of the building does the

    asked by Emily on February 26, 2017
  19. Maths

    A ball is thrown vertically upwards at 3 m s-1 from 1m above ground level (I) write down the equation for the height of the ball above the ground after t seconds (while the ball is in the air). (II) use your answer to find the time it takes the ball to

    asked by John B on November 17, 2016
  20. physics

    A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 7.50 m/s at an angle of 18.0° below the horizontal. It strikes the ground 5.00 s later. (a) How far horizontally from the base of the building does the

    asked by kim on February 5, 2016
  21. probabliliyiuyiuly...

    ok i'd appreciate it if someone could give me the answer to this one problem and tell me how its solved so i can do the rest on my own.... gwen has 4 blue pens, 8 black pens, 2 green pens and 3 red pens in her drawer. she takes out two pens without

    asked by Jake T. on May 16, 2007
  22. Physics

    A uniform bar weighing 60N has a length of 4mamd it is supported at its ends by a string. A load W=20N is placed at some point on the bar such that it is in equilibrium when the tension in the string at the left end is 80N, a) locate tge position of W. b)

    asked by Drew Gonzales on May 16, 2016
  23. CALCULUS

    A plane, flying horizontally at an altitude of 1 km and a speed of 500 km/hr, passes directly over a radar station. find the rate in km/hr at which the distance from the plane to the station is changing when it is 2 km away from the radar station. Hint:

    asked by TANYA on April 24, 2014
  24. physics!!!!!

    A small spherical insulator of mass 8.00*10^-2kg and charge +6.00*10^-7C is hung by a thin wire of negligible mass. A charge of -9.00*10^-7C is held 0.450m away from the sphere and directly to the right of it, so the wire makes an angle with the vertical.

    asked by Donna on March 23, 2008
  25. SIERRA

    a fullback having a mass of 9.0x10^1 kg is running at 4.5 m/s [E]. He is hit by a linebacker and 1.2 s later is moving backwards at 1.5 m/s [W].Find: a) the impulse imparted to the fullback B) the average force exerted on the fullback by the linebacker my

    asked by PHYSICS on January 13, 2016
  26. Statistics

    Suppose a certain species bird has an average weight of grams. Based on previous studies, we can assume that the weights of these birds have a normal distribution with grams. For a small group of 13 birds, find the margin of error for a 70% confidence

    asked by Rachel on October 19, 2014
  27. Physics

    A cart of mass m1 = 12 kg slides down a frictionless ramp and is made to collide with a second cart of mass m2 = 21 kg, which then heads into a vertical loop of radius 0.26 m, but the carts stick together after the collision.Find the height h from which

    asked by Ryan on October 13, 2013
  28. math

    When Beth finishes college, she has a balance of $2876.37 on a credit card with an annual percentage rate (APR) of 17.3%. She decides not to make any additional purchases with her card until she has paid off the balance. Assuming the minimum payment is 2%

    asked by linna on March 17, 2008
  29. Physics

    I know I said I didn't know how to start my last question and them figured it out on my own but this one I have tried to work out and really can't get. We have two carts that have magnets to keep them from touching. One cart is initially at rest and we

    asked by hayley on July 4, 2012
  30. math

    Find the missing numbers to complete the patterns. Some are arithmetic and some are geometric. State the commom differences or common ratio. 1) 1,2,___,___,___,32 2)800,80,8,0,8,0.08,___,____ Some tricky ones that don't follow the "rules."

    asked by Elizabeth O'Loughlin on February 13, 2011
  31. Physica

    A 21.0-kg satellite has a circular orbit with a period of 2.37 h and a radius of 8.50×106 m around a planet of unknown mass. If the magnitude of the gravitational acceleration on the surface of the planet is 7.10 m/s2, what is the radius of the planet? I

    asked by winterWX on February 17, 2007
  32. physics!!!

    A small spherical insulator of mass 8.00*10^-2kg and charge +6.00*10^-7C is hung by a thin wire of negligible mass. A charge of -9.00*10^-7C is held 0.450m away from the sphere and directly to the right of it, so the wire makes an angle with the vertical.

    asked by Donna on March 22, 2008
  33. AP Physics

    A person stands in a stationary canoe and throws a 5.16-kg stone with a velocity of 7.75 m/s at an angle of 31.5° above the horizontal. The person and canoe have a combined mass of 105kg. Ignoring air resistance and effects of the water, find the

    asked by Kylie on November 26, 2014
  34. Math (pleaseplease help)

    Rolinda's first five Spanish test scores are 85, 85, 60, 62, and 59. a. Find the mean, median and mode of the scores. Round to the nearest tenth, if necessary.* b. Which of these measures best supports Rolinda's claim that she is doing well in her Spanish

    asked by Caleidoscope on May 1, 2015
  35. chemistry

    Given: *Fe2O3(s)+3CO(s)-->2Fe(s)+3CO2(g)(delta h is -23kJ) *3Fe2O3(s)+CO(g)-->2Fe3O4(s)+CO2(g)(delta h is -39kJ) *Fe3O4(s)+CO(g)-->3FeO(s)+CO2 (delta h is 18kJ) Desired:FeO(s)+CO(g)-->Fe(s)+CO2(g) find delta h for the desired reaction. which reactions do i

    asked by tanisha on March 26, 2008
  36. Algebra 2 Honors

    I have a question on my math homework. The problem is: Suppose r varies jointly as s and t. If s = 20 when r = 140 and t = -5, find s when r = 7 and t = 2.5. I used r = kst. I plug in and get 140 = k(20)(5). I then multiply and get 140 = k(-100). I then

    asked by Ronald on May 19, 2015
  37. math

    2051 kids were surveyed on how they earn money. 47% said parents gave them money, 32% said allowance, 45% said odd jobs, 26% said part-time jobs, and 11% said full-time jobs. Estimate the number of teens who made each of the response and then find the

    asked by Anonymous on March 11, 2009
  38. Physics

    A stone with mass 0.8kg is attached to one end of a string 0.9m long . The string will break if its tension exceeds 600N. The stone is whirled in a horizontal circle ,the other end of the string remains fixed. Find the maximum speed , the stone can attain

    asked by Swagat khanal on February 6, 2017
  39. Math

    The total cost (in dollars) for a company to manufacture and sell x items per week is C(x)=70x+400. If the revenue brought in by selling all x items is R(x)=90x−0.05x^2, find the weekly profit. How much profit will be made by producing and selling 60

    asked by Keonn'a on October 25, 2018
  40. Calculus

    a) The value of a computer after t years after purchase is v(t) = 1000e^(-0.45t). At what rate is the computer's value falling after 5 years? b) Assume that the total revenue received from the sale of x items is given by R(x) = 32 ln (5x+3), while the

    asked by Jack on April 13, 2015
  41. physics

    a flask contains helium gas at 11k. the flask is thermally isolated and the gas is allowed to escape slowly through a narrow tube until the pressure within the flask is 0.98 atm and the temperature is 4.2K. if the gas is ideal, find the initial pressure

    asked by annie on June 14, 2013
  42. Calculus-Math

    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
  43. Health

    At allendale psychiatric hospital, the hospital census on january 4 is 110. according to the following data, whats the hospital census for january 5? admissions - 10 discharges - 2 a & d - 1 A. 99 B. 100 C. 108 D. 118 i am thinking that the answer is C but

    asked by Anonymous on November 3, 2008
  44. Calculus

    he rate of growth of the profit from an invention is approximated by P'(x)=xe^-x^2, where x represents time measured in years. The total profit in year 1 that the invention is in operation is $15,000. Find the total profit function. I know the answer is

    asked by Tiana on May 2, 2014
  45. math

    Consider G. Thumb, the leading salesperson for the Moe D. Lawn Landscaping Company. Thumb turned in the following summary of clients contacted for the week of October 23–28. Date No. of Clients Oct. 23 11 Oct. 24 8 Oct. 25 11 Oct. 26 15 Oct. 27 11 Oct.

    asked by Debin on December 4, 2012
  46. Calculus

    The rate of growth of the profit (in millions of dollars) from a new technology is approximated by P'(x)=xe^(-x^2) Where x represents time measured in years. The total profit in the thrid year that the new technology is in operation is $10,000. A. Find the

    asked by Liz on December 4, 2006
  47. phys

    a spaceship travels with a speed of 0.7c as it passes by the Earth on its way to a distant star. The pilot of the spaceship measures the length of the moving ship as 50m. Determine its length as measured by a person on Earth. Answer in units of m. for this

    asked by slien on October 12, 2006
  48. Precalculus

    Suppose you deposit $10,000 into an account earning 3.5% interest compounded quarterly. After n quarters the balance in the account is given by the formula: a) Each quarter can be viewed as a term of a sequence. List the first 5 terms. b) Identify the type

    asked by bob on February 6, 2018
  49. science

    A 4.50 g mass resting on a horizontal, frictionless surface is attached to one end of a spring; the other end of the spring is fixed to a wall. It takes 3.6J of work to compress the spring by 13.0 cm. If the spring is compressed, and the mass is released

    asked by Peaches on February 5, 2015
  50. phys

    a spaceship travels with a speed of 0.7c as it passes by the Earth on its way to a distant star. The pilot of the spaceship measures the length of the moving ship as 50m. Determine its length as measured by a person on Earth. Answer in units of m. for this

    asked by slien on October 10, 2006
  51. Calculus

    The point P(4,2) lies on the curve y=x^1/2 If Q is the point (x,x^1/2) use your calculator to find the slope of the secant line PQ for the following values of X: 1)3.5 2)3.9 3)3.99 4)3.999 5)4.5 6)4.1 7)4.01 8)4.001 i plugged these points into the intial

    asked by Judy on September 25, 2007
  52. Physics

    A boy on a 2.2kg skateboard initially at rest tosses a 7.9kg jug of water in the forward direction. If the jug has a speed of 3.2m/s relative to the ground and the boy and skateboard move in the opposite direction at .56m/s, find the boy's mass. Answer in

    asked by Fg on April 1, 2011
  53. Physics

    A small spherical insulator of mass 6.53 × 10-2 kg and charge +0.600 uC is hung by a thin wire of negligible mass. A charge of -0.900 uC is held 0.150 m away from the sphere and directly to the right of it, so the wire makes an angle with the vertical

    asked by Jenn on February 26, 2018
  54. English/History

    In Maus, what 3 times does Vladek almost die, but is saved? I feel like there are a ton of times he could have dies (being in the concentration camps alone is life-threatening enough), but I'm not sure what specific times Vladek was really close to death,

    asked by Ellie on May 20, 2012
  55. physics

    To create artificial gravity, the space station is rotating at a rate of 1.00 rpm.the radii of the cylindrically shaped chambers have a ratio ra/rb that equals 4.00. each chamber A simulates an acceleration due to gravity of 10.0m/s^2. find values for a)ra

    asked by kassy on October 13, 2016
  56. statistics

    Use the given confidence level and sample data to find a confidence interval for the population standard sigma. Assume that a simple random sample has been selected from a population that has a normal distribution. salaries of college graduates who took a

    asked by rich on December 29, 2011
  57. physics

    A model rocket is launched straight upward. Its altitude y as a function of time is given by y=bt−ct2, where b = 80m/s , c = 4.9m/s2 , t is the time in seconds, and y is in meters. 1. Use differentiation to find a general expression for the rocket's

    asked by Anonymous on January 18, 2015
  58. Math

    My question says: Find the exact alue of x for which (4^x)*(5^[4x+3])=(10^[2x+3]) I can't seem to come to a solution. We're reviewing last year's lessons, so change of base and logarithmic expressions are what we're going over right now. Here's what I've

    asked by Anonymous on September 20, 2010
  59. science

    A solid sphere of radius r is gently placed on rough horizontal ground with an initial angular speed and no linear velocity if the coefficient of friction is find the time when the slipping stops in addition state the linear velocity and angular velocity

    asked by Prashant Sartale on May 3, 2013
  60. calculus

    At a summer campfire, the radius of a marshmallow on a stick expands at the rate of \ {r ' (t)} = \frac{2.1 }{1 t + 5} mm/s where t is the time of heating in seconds. Initially the radius was 3.8 mm. Find the radius after 27 seconds using the following

    asked by ricky on March 8, 2014
  61. Physics

    Two blocks, each of mass m = 3.35 kg are hung from the ceiling of an elevator as in the figure below. (a) If the elevator moves with an upward acceleration a with arrow of magnitude 1.7 m/s2, find the tensions T1 and T2 in the upper and lower strings. T1 =

    asked by Jack on October 2, 2016
  62. please help idin't get it

    5.imagine you are at the beach on a very hot day. you walk toward the water. the sand is eextremly hot. when you reach the water, you find that the water is much cooler than sand. b)predict what the air temprature would be relative to the sand and water

    asked by shweta on September 12, 2010
  63. its physics.. i just want the formula

    A boy on a 2.2 kg skateboard initially at rest tosses a(n) 7.7 kg jug of water in the forward direction. If the jug has a speed of 2.9 m/s relative to the ground and the boy and skateboard move in the opposite direction at 0.57 m/s, find the boy’s mass.

    asked by Rah_rAh on January 17, 2013
  64. education

    I have an education project in which I have to explain my philosophies as a future educator, ex. why/how/who/what/where I will teach, who I will teach, and also use outside sources such as quotes to tie in with my ideas... I know I can do the project on my

    asked by y912f on April 12, 2012
  65. chemistry

    A researcher put 10.0 moles of N2O into a 2-L container at some temperature where it decomposes according to the following: N2O = 2N2+ O2. At equilibrium 2.20 moles of N2O remain. Calculate the Kc for the reaction. How am I supposed to fill in the ICE

    asked by Laury on April 6, 2017
  66. physics

    TWO BLOCKS a AND b ARE CONNECTED BY A HEAVY ROPE OF MASS 2kg THE MASSES OF a AND b ARE 10 AND 5kg RESPECTIVELY.IF AN UPWARD FORCE OF 200N IS APPLIED TO THE TOP ROPE,THE SYSTEM IS MOVING VERTICALLY UPWARD UNDER GRAVITY A:FIND THE ACCELERATION OF THE SYSTEM

    asked by Fonde on January 13, 2012
  67. Chemistry

    Explain the significance of positive and negative values for each thermodynamic quantity in the free energy equation. (enthalpy change, entropy change, and free energy change) I think this is something you can find in your text/notes. If not, explain what

    asked by Dave on May 14, 2007
  68. please check(Social studies)

    if this isnt right can someone find me a link where i can read more info about it. 17. Which of the following is the most valid reason for not digging up Aztec ruins in modern Mexico City? A.There are no Aztec ruins under Mexico City. B.Mexicans have very

    asked by dalia on March 4, 2014
  69. Physics

    A smooth plane AB is 10 meters long, It is inclined at 30 degrees to the horizontal with the lower end, B, 6 meteres vertically above horixontal ground. A particle is placed on the plane at the upper end, A, and then released from erst so that it slides

    asked by Chris on February 4, 2012
  70. Trig

    Dalco manufacturing estimate that its weakly profit, P, in hundreds of dollars,can be approximated by the formula P= -4x²+8x+7, where x is the number of units produced per week, in thousands. 1)How many units should the company produce per week to earn

    asked by Alex on April 21, 2012
  71. Chemistry

    Calculate the pressure in an evacuated 250. mL container at 0.00 degrees C if 3.20 cm^3 of liquid oxygen evaporates. Assume that the liquid oxygen has a density of 1.118 g/cm^3 I understand that the density and volume can be used to find the mass in grams.

    asked by Lindsey on May 7, 2012
  72. math;););)

    Previously you found that a 15-degree counterclockwise rotationcenteredat(2,1)sendsthepoint(4,6)toanother point (x, y) ⇡ (2.638, 6.347). The diagram on the right shows the vector v in the same direction as vector [2,5], only with a di↵erent length.

    asked by anonymous on January 12, 2017
  73. Math

    A town has population 225 people at year t=0. Write a formula for the population, P, in year t. a) grows by 10% per year I don't understand how to do this, and keep getting the wrong answer. Also, Find a formula for the linear function q(x) whose graph

    asked by ANON on October 17, 2012
  74. arithmetic

    I have a Q that im trying to solve: it says: the 1st , 2nd, and 3rd term of a geo. sequence is the same as the 1st, 7th and 9th terms of an arith. sequence.: I have to find the common ratio. So i know: a+8d = a(r^2) (1) a+6d = ar (2) but i don't know how

    asked by Gemini on October 19, 2009
  75. Math/Physics

    How would you solve this? 1/2 mv^2 - 1/2 m x 25 = mg x 100sin20 I obtained this from the question: A girl on a sledge starts, with a speed of 5 m/s, at the top of a slope of length 100 m which is at an angle of 20 degrees to the horizontal. The sledge

    asked by Autumn on January 16, 2018
  76. statistics (please check my answer)

    Solve the problem. Round to the nearest tenth unless indicated otherwise. The weights of certain machine components are normally distributed with a mean of 8.5 g and a standard deviation of 0.09 g. Find the two weights that separate the top 3% and the

    asked by maczindahouse on February 28, 2019
  77. math

    Find the place value of 7 and 8 in the number 9.7548. (b). Write 23459/1000 in decimal form. (c). Write 3.537 in English words. (d). Write twelve and seventeen thousandths in decimal form. (e). Complete the statements below, using the symbol “”. 0.889

    asked by rosland on January 10, 2009
  78. Statisitcs

    The mean height of fully grown birch trees are 18 feet with a standard deviation of 1.2 feet, normally distributed. Random samples of size 9 are drawn from this population and the mean of each sample is determined. Find that mean and the standard error of

    asked by D on November 14, 2012
  79. Physics

    Two skaters, Alan and Betsy, move toward each other on a very smooth skating rink. Their masses and speeds are respectively: 60 kg; 4.0 m/s and 50 kg; 0.4 m/s. After the skaters collide and use their hands to push each other away, Alan is moving backwards

    asked by Anonymous on July 4, 2014
  80. Math

    1. Determine the scalar equation of the plane with vector equation Vector r= (3,-1,4) +s(2,-1,5) + t(-3,2,-2). 2. Determine the value of k so that the line with parametric equations x = 2 + 3t, y = -2 + 5t, z = kt is parallel to the plane with equation 4x

    asked by anon on October 11, 2018
  81. reading

    I really need help in understand what I read. Everyday we have to summarize a chapter in a book. Well I do read the chapter but I always find myself writing 2 sentences out of the chapter for my summary. My grades are not good in reading and I want to know

    asked by Nehemiah on January 25, 2009
  82. math

    please help me to solve this problem A swimmer going downstream takes 1hour,20minutes to travel a certain distance. It takes the swimmer 4hours to make the return trip against the current. If the river flows at the rate of 1.5mph. Find the rate of the

    asked by joy on July 31, 2010
  83. Physics

    Find an expression in terms of M, mu, and theta for the speed of waves on the string.Express your answer in terms of the variables M, mu, theta, and appropriate constants. The picture shown is just of a block with mass m on an inclined frictionless surface

    asked by Mel on November 27, 2012
  84. Maths

    a flat rectangualar roof is 20m long and 12m wide. All rain falling on the roof drains into a closed cylindrical water tank. If 1cm of rain falls on the roof find a)how many litres of water drain into the tank Working out shown please

    asked by Meee on March 14, 2011
  85. algebra

    I have tried this problem over and over and just not getting how to do it can someone help I don't want the answer I just need showed how to do it. solve using the formula L 0.000169d^2.27/h where L is the proper length in feet of the letters on pavement,

    asked by summerwings on March 14, 2010
  86. probabilities

    A brand name has 50% recognition rate. Assume the owner of the brand wants to verify that rate by beginning with a small sample of 6 randomly selected consumers. How would you do the binomial probability formula can be used to find the simple binomial

    asked by slomomo on February 19, 2015
  87. physics

    a ball of mass 100g is projected vertically upwards from the ground with a velocity of 49m/s at the same time another identical ball is dropped from a height of 98m to fall freely along the same path as followed by the first ball. After some time the two

    asked by gudygudy on February 4, 2016
  88. General physics

    A 34.1 kg child rides a Ferris wheel whose diameter is 18.3 m. When the ride is turning at a constant rate, the child’s speed has a constant value of 4.23 m/s. Find the normal force the seat exerts on the child at: a) The top of the ride b) The bottom of

    asked by ODU on July 2, 2013
  89. math help

    I need help factoring this out 6a^2-5a+1 okay so now after revising (3a-1)(2a ) the last part i don't know how to actually get -5 and 1 Factoring is not my strong suit. However, by the term "+1", you know that both of the signs in your parenthesis are

    asked by jas20 on March 2, 2007
  90. General Physics I

    A 50-N force acts on a 2-kg crate that starts from rest. When the force has been acting for 2 s the rate at which it is doing work is: I found this question online so I saw the answer is 2500 Watts. What I don't understand is how to come to this

    asked by VitaX on October 13, 2010
  91. Chemistry 12

    The following data was obtained after 25.00ml of benzoic acid was titrated with potassium hydroxide. Volume of KOH used: Trial 1: 27.80ml Trial 2: 27.88ml Trial 3: 27.66ml Initial pH: 3.125 pH at 13.92ml: 5.013 Find the Ka for this sample of citric acid

    asked by Brian on June 25, 2017
  92. Math

    To play a game, you spin a spinner like the one shown.you win if the arrow lands in one of the areas marked win.lee played this game many times and recorded her results. She won 8 times and lost 40 times. Use lees data to explain how to find the

    asked by Anonymous on March 7, 2017
  93. Physics

    A 14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. Find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earth’s velocity. Earth’s mass is 6.0 × 1024 kg. Show

    asked by Pat on January 27, 2012
  94. physics

    A radar antenna is tracking a satellite orbiting the earth. At a certain time, the radar screen shows the satellite to be 118 km away. The radar antenna is pointing upward at an angle of 58.2 ° above the ground. Find (a) the x and (b) the y components (in

    asked by Ashley on September 28, 2014
  95. physics

    a child sits on the edge of a spinning merry-go-round 3.2 m from its center. The coefficient of static friction between the child's bottom and the surface of the merry-go-round is .8. Find the maximum rate in revolutions per seconds, that the

    asked by Spice on November 24, 2015
  96. physics

    A radar antenna is tracking a satellite orbiting the earth. At a certain time, the radar screen shows the satellite to be 181 km away. The radar antenna is pointing upward at an angle of 66.2 ° above the ground. Find (a) the x and (b) the y components (in

    asked by need help on December 14, 2014
  97. Algebra

    1)If y varies inversely as x and y = 3, when x = 6. Find y when x = 36. A)72 B)2 C)1/2 D)18 I chose C y1/x2 = y2/x1 3/36 = y2/6 18/36 = 1/2 2)Write the equation 4^-3 = 1/64 in logarithmic form. A)log64 = 4^3 B)log^-3 64 = 4 C)log^4 1/64 = -3 D)log^4(-3) =

    asked by Jon on February 22, 2008
  98. trig

    I am very confused about the concepts of.. sin è = sin(180 - è) sin (180 + è)= -sinè tan (180 - è) = -tanè and how the final answer was found in this problem... Find cos 510: cos510=cos(540-30) =-cos30 =-s.r3/2 i don't understand how we went from

    asked by killie on April 30, 2009
  99. english

    My fiancé does not think he needs a credit card right now. We are already in enough debt. It has actually consumed our lives. Although most of the debt we have is his. I have my debts too, but they are much smaller. This is why he does not need a credit

    asked by Jenn on October 21, 2010
  100. Math

    The number of calls received by a car towing service averages 14.4 per day (per 24 hour period). After finding the mean number of calls per hour, find the probability that in a randomly selected hour the number of calls is 0

    asked by Katie on February 27, 2011

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