1. physics

    A stationary mass of 10 kg disintegrates explosively, with the evolution of 4.2*10^5 J, into three parts, two having equal masses of 3 kg. These two masses move at right angles to each other. Calculate the speed of the third part.

    asked by rikki on January 16, 2012
  2. maths

    Rudransh has a piece of cardboard in shape of a quadrilateral. He cuts it into two triangles such that angles formed at the vertices are bisected. He wants to find out whether the two triangles are congruent or not

    asked by Anonymous on January 10, 2013
  3. math

    A jet A is flying above 2 ships B and C which are 18km apart. If the angles of depression of B and C from are 60 and 32 degrees respectively, find the height of the jet above the sea level, correct to the nearest m.

    asked by someonestupid on March 5, 2016
  4. physics

    A bag of cement of weight 370 N hangs from three wires Two of the wires make angles è1 = 58.6° and è2 = 23.8° with the horizontal. If the system is in equilibrium, calculate the tension T1.

    asked by Vishnu on October 11, 2008
  5. Math

    Find the area of a triangle on a spherical surface that has a radius of 3cm and angles that measure 75degrees, 160 degrees, and 142 degrees.

    asked by Em on April 29, 2015
  6. Physics

    A wheel has a radius of 100 cm. How far (path length) in meters does a point on the circumference travel if the wheel is rotated through angles of (a) 30°, (b) 60 rad, (c) 60 rev, respectively?

    asked by jack on February 10, 2017
  7. Science

    What two angles of elevation will enable a projectile to reach a target 16 km downrange on the same level as the gun if the projectile's initial speed is 400m/sec ?

    asked by Siegrain on October 16, 2014

    The sum of the measures of two exterior angles of a triangle is 264o. What is the measure of the third exterior angle? • 84o • 96o MY ANSWER?? • 112o • 124o

    asked by SANDRA on December 18, 2014
  9. Geometry

    If the sum of the measures of the interior angles of a n-sided polygon is 1,0800, then set up a mathematical model to find the number of sides of the polygon.

    asked by Summer. on June 3, 2015
  10. Geometry

    8)Suppose that a given parallelogram is not a rhombus or a rectangle. Which of the following can you conclude about this parallelogram? A) Its diagonals are perpendicular bisectors of each other. B) It is a square. C) Its angles are not all congruent. D)

    asked by Don on May 23, 2010
  11. Math

    An object is acted upon by two forces, u and v, with direction angles €u and€v, respectively. Find the direction and magnitude of the resultant force. U= 30lb €u = 0degrees v= 90lb €v =60 degrees

    asked by Jace on November 13, 2012
  12. Geometry 12

    What is the measure of the vertex angle of an isosceles triangle if one of its base angles measures 42° and its congruent sides each measure 9 cm? Please express your answer as a number only.

    asked by Kayla Druery on December 14, 2015
  13. ALGEBRA 2

    In triangle ABC , angle C is a right angle. Find the remaining sides and angles. Round your answers to the nearest tenth. Show your work

    asked by SAM on November 28, 2014
  14. Math

    Draw two scalene triangles that are not congruent, but have exactly five sets of parts (sides and angles) that are congruent. Make a drawing that is to scale. Label yourmeasurements.

    asked by Michelle on November 8, 2012
  15. Math

    State the theorem or postulate that is related to the measures of the angles in each pair. Then find the angle measures. m∠3=(23x+11)°,m∠4=(14x+21)° Can you teach me this problem?? Please...

    asked by CC on August 30, 2016
  16. physics

    A 3 point jump shot is released 2.2 m above the ground, 6.14 m from the basket, which is 3.06 m high. For launch angles of 30° and 60°, find the speed needed to make the basket.

    asked by talia on November 13, 2014
  17. Pre-calc

    If llull=1 and llvll=3, and the vectors maek angles of 170 degrees and 130 degrees with the x-axis respectively, find the component form of the sum of u and V. Please help thanks!

    asked by Casandra on February 13, 2012
  18. physics

    a fire hose held near the ground shoots water at a speed of 6.5m/s at what angle should the ozzle point in order that the water land 2.5m away? why are there two different angles?

    asked by kelly on October 17, 2011
  19. Pre-Calculus

    Determine the number of triangles that can be formed with the given information. and if it forms two possible triangles solve all unknown angles and sides Angle A=116 degrees a=10 b=11

    asked by DW on April 7, 2013
  20. Physics

    An optical fiber is made of a clear plastic with index of refraction n=1.6, For what angles with the surface the light remain contained within the plastic guide?

    asked by jo on January 4, 2015
  21. math

    What is the sum of the measures of the angles of a regular decagon? What is the measure of each angle in the decagon? 1,620°; 162° 2,880°; 288° 1,440°; 144° none of these

    asked by i will pay on February 12, 2018
  22. physics/math

    Does the formula Sum of internal angles of a polygon = (n - 2)x180 degrees, where n represents number of sides, work for polygons of interacting sides?

    asked by sandhya on August 24, 2010
  23. Physics, diffraction

    1. Yellow light of wavelength 580 nm shines on a diffraction grating with 4000 lines/cm. A.At what angles do the first-order and second-order maxima occur?

    asked by Jamie on April 8, 2013
  24. Stats, Statistics, Math

    A Statistics professor assigned 10 quizzes over the course of the semester. He wanted to see if there was a relationship between the total mark of all 10 quizzes and the final exam mark. There were 229 students who completed all the quizzes and wrote the

    asked by Papi on September 24, 2016
  25. Chemistry

    The vapor pressure, P, of a certain liquid was measured at two temperatures, T. Represented in a table: T (in Kelvin) ------- P(in kPa) [325] --------------- [4.00] [775] --------------- [8.59] What is the enthalpy of vaporization for this liquid? (Delta H

    asked by Eric on January 23, 2012
  26. Math

    The cost for a business to make greeting cards can be divided into one-time cost (e.g., a printing machine) and repeated costs (e.g., ink and paper). Suppose the total cost to make 30 cards is $800, and the total cost to make 550 cards is $1,300. What is

    asked by Anonymous on October 21, 2015
  27. english

    The antonyms of ignore,optimistic,humility,indolent,boring,attack,normal,innocuous,preserve,commence

    asked by chi on January 24, 2013
  28. Science - Pls Help! Thanks ' (:

    normal double glazing windows is made from two layers of glass with air trapped in between them. So How Can They Keep The House Warm ??

    asked by fern on January 11, 2009
  29. math

    Find two point on a circle x^2+y^2=1 where the slope of the tangent line is -2 write the equation for the normal lines at these points.

    asked by help on October 10, 2010
  30. Math

    A district mathematics test for third-graders had a normal distribution with a mean of 74 and a standard deviation of 11. What percentage of students scored between 63 and 85?

    asked by Clement on February 15, 2016
  31. trigonomentry using either exponential or complex

    give the expansion of sin^8@ as a series of cos@ plz help me i only know the normal way of doing that but i do not know how to apply complex number or exponential

    asked by sam on September 21, 2016
  32. science

    when light travels from air into glass at an angle of incidence greater than o degrees, how is it bent in relations to the normal?

    asked by siva on December 5, 2013
  33. Grammar

    There is normal DTRs noted on examination. The prosthetic hardware was freed from the surrounding tissues and removed. I think both sentences are ok as are.

    asked by Cathy on November 10, 2014
  34. statistics

    a standardized test has a mean of 88 and a standard deviation of 12. What is the score at thr 90th percentile? Assume a normal distribution.

    asked by cw on February 8, 2011
  35. math check

    Consider a normal population with ì = 49 and ó = 6. Calculate the z-score for an x of 44.2 from a sample of size 22. (Give your answer correct to two decimal places.) 3.75 is what I got.. and I have only one more try on this one.

    asked by Sue 74 on June 17, 2013
  36. Physics

    Why would normal force be set to zero to calculate the minimum possible speed a rider can have at the top of a loop. Please i need help, this is due in few hours

    asked by Ted on April 18, 2013
  37. public health

    Most of the increase in medical cost is due just to normal inflation that has affected the entire economy.” Comment on the above statement.

    asked by thafer on March 29, 2011
  38. biology

    what genotypes would I use on a punnett sqare to shoe a man(color blind) and a woman (homozgous for normal vision

    asked by debbie on February 24, 2009
  39. physics

    why is it that drivers place cement blocks and other heavy items in the trucks of their vehicles? (think of friction and normal force)

    asked by William on October 24, 2014
  40. chemistry

    The normal boiling point of Rh is 3727°C. What is its vapor pressure in mm Hg at 2914°C, if its heat of vaporization is 557.0 kJ/mol?

    asked by hershi on February 5, 2014
  41. college

    Consider a normal population with μ = 36 and σ = 4.9. Calculate the z-score for an x of 47.6 from a sample of size 14. (Give your answer correct to two decimal places.)

    asked by samantha on July 23, 2012
  42. Science

    The normal melting and boiling point of O2 are -218C and 49.8atm. a)Sketch the phase diagram for O2. b) Which is denser, O2(S) or O2 (l)? explain.

    asked by Joseph on August 20, 2010
  43. math check

    Find the area under the standard normal curve between -1.32 and the mean, P(-1.32 < z < 0.00). (Give your answer correct to four decimal places.) 0.0968

    asked by Nora 62 on June 2, 2013
  44. medical terminology

    the period of time when the uterus returns to its normal size is the? A) luteal phase B)menarche C)puerperium D)ovulation

    asked by ceecee on October 16, 2010
  45. maths

    find equations for the tangent and the normal at P (1n2, 2k) on the curve with equation y=ke^x, where k is a constant. (b) given that y=sin^-1x, show that (1-x^2)d^2y/dx^2-xdy/dx=0

    asked by skangele on October 3, 2013
  46. stats

    Some IQ tests are standardized to a Normal model with a mean of 100 and a standard deviation of 16. About what percent of people should have IQ scores above 116?

    asked by Jamie on September 26, 2010
  47. 12th

    Assuming a normal distribution of Blood pressure of a mean of 120 with standard deviation of 10, what person would be considered to be unusual ?

    asked by michael perez on November 9, 2015
  48. statistics

    A population of scores forms a normal distribution with a mean of µ = 40 and a standard deviation of SD = 12. a. What is the probability of randomly selecting a score less than X = 34?

    asked by Anonymous on June 3, 2011
  49. Biology

    How does meiosis and fertilization in humans and other sexual reproductive organisms maintain the normal chromosomes number for each species?

    asked by Anonymous on April 9, 2016
  50. biology

    How does meiosis and fertilization in humans and other sexual reproductive organisms maintain the normal chromosomes number for each species?

    asked by Hannah on April 11, 2016
  51. calculus

    Given f(x,y,z)= use stokes theorem to determine the flux integral curlF dot ds, where S is the graph of z=9 - x^2 - y^2 for z>=0 , oriented by the upward normal. please help!

    asked by sam on December 14, 2014
  52. maths

    find equations for the tangent and the normal at P (1n2, 2k) on the curve with equation y=ke^x, where k is a constant. (b) given that y=sin^-1x, show that (1-x^2)d^2y/dx^2-xdy/ dx=0

    asked by gibbsm on October 6, 2013
  53. Math

    The functional determinant of x, e^x, and e^-x is equal to___ The orthogonal trajectory of y^2 - x^2 = C is__ The slope of the normal line to y^2 = x/2 at P(1/8,1/4) is ____ help please...

    asked by Alvin on December 14, 2009
  54. Math

    Find the z-scores that bound the middle 55% of the standard normal distribution ____ small value _____ larger value

    asked by Teresa on May 11, 2013
  55. Math

    Find the z-scores that bound the middle 55% of the standard normal distribution ____ small value _____ larger value

    asked by Teresa on May 11, 2013
  56. stat

    Find the area under the standard normal curve to the left of z = 1.88, P(z < 1.88). (Give your answer correct to four decimal places.)

    asked by janet on July 7, 2012
  57. Statistics

    Find the number x such that the proportion of observations that are less than x in a Normal distribution with mean 100 and standard deviation 25 is 0.3. (Use 2 decimal places.)

    asked by Sarah Lacks on May 31, 2016
  58. math

    I need help calculating (a) the total installment price. (b) the carrying charges, and (c) the number of months needed to save the money at the monthly rate to buy the item below for its cash price (remember to round up). A bike with a cash price of $500,

    asked by Carly on January 26, 2010
  59. math

    Brenda has taken out a $1300 loan to pay for a hot tub. She will make monthly payments for a year at an interest rate of 10 %, compounded monthly. How much interest will she end up paying? Select one: a. $213.45 b. $71.49 c. $112.56 d. $110.89 What i don't

    asked by Miyabi123456789 on June 5, 2017
  60. Science

    1 kg of Nitrogen is mixed with 3.5 m3 of hydrogen at 300 K and 101.3 kPa and sent to ammonia converter. The product leaving the converted analyzed 13.7% ammonia, 70.32% hydrogen and 15.98% nitrogen. (a) Identify the limiting reactant? (b) What is the

    asked by Man Singh Chouhan on March 26, 2015
  61. BUSINESS 101

    If a firm has a current ratio of 2.00,it means that for every $2in ___it has $1in___ A.total assets;current liabilities B.current assets;current liabilities C.total assets;total liabilities D.current assets;total liabilities my answer is c can somebody

    asked by bella on October 15, 2013
  62. Math

    Hey guys I need some help with this question PLZ: A telecommunications company offers a rental deal which costs $30 per month plus 50c per call. a) Find the total cost (T1) for making x calls in a given month b)Find the total cost for making 52 calls in a

    asked by Liam on November 4, 2015
  63. math

    What is the union of the 4 half-planes determined by 2 intersecting lines. a. the entire plane b. the entire plane except for the two intersecting lines c. the entire plane except for one of the lines d. the entire plane except for the point of

    asked by Anonymous on November 6, 2018
  64. Physics/Math

    A stuntman drives a car (without negative lift) over the top of a hill, the cross section of which can be approximated by a circle of radius R = 110 m. What is the greatest speed at which he can drive without the car leaving the road at the top of the

    asked by COFFEE on February 12, 2007
  65. Chemistry

    A clear colorless liquid in an open beaker was heated to boiling. The liquid began to boil at 110°C, and as vapors escaped, the temperature of boiling gradually increased to 115°C, at which the heating was stopped. On the basis of this information, we

    asked by Chris on May 12, 2010
  66. chemistry

    A clear colorless liquid in an open beaker was heated to boiling. The liquid began to boil at 110°C, and as vapors escaped, the temperature of boiling gradually increased to 115°C, at which the heating was stopped. On the basis of this information, we

    asked by jasmine on May 18, 2010
  67. Physics

    The flywheel is initially at rest. A force of 250 N is applied tangentially to the rim, causing it to rotate about its central axis. what is the energy acquired by it after 1 minute? can anyone help me with this?

    asked by Oisin on August 11, 2010
  68. Physics

    What net braking force must be applied to stop a car with a mass of 900 kg initially travelling at a velocity of 100 km/h within a straight-line distance of 50 m?

    asked by Syafiqa on July 17, 2010

    A disk has a moment of inertia of 3.0x10^-4 and rotates with an angular speed of 3.5 rad/sec. WHat net torque must be applied to bring it to rest in 3.0s? can some one help me out with this im lost!!!

    asked by PHYSICS HELP on November 13, 2007
  70. Written communication

    Often applied to politicians, the term _______ suggests hiding one's feelings while obscuring or "spinning" facts. A. vacillate B. simulate C. dissimulate D. dissemble plz help me

    asked by Tank on August 26, 2014
  71. science

    A 1600kg car starts at rest and reaches 40 m/s in 6 seconds. I need to find: a) the change in kinetic energy b) work c) distance d) applied force of the engine

    asked by Abby on May 15, 2017
  72. physics

    If a car is travelling at 60. miles per hour and the brakes are applied so that it accelerates at -15.0 ft/s2, how many feet will it take to stop? i realize i am posting a lot of questions, but i don't understand them!

    asked by Anonymous on January 20, 2011
  73. English

    Sigmund Freud coined the term _______,which he applied to people who were extremely self-absorbed. A. Dryad B. suspension of disbelief C. moral D. narcissistic Answer: B?

    asked by Ciara on March 4, 2013
  74. Physics

    Suppose that in the same Atwood setup another string is attached to the bottom of m1 and a constant force f is applied, retarding the upward motion of m1. If m1 = 5.30 kg and m2 = 10.60 kg, what value of f will reduce the acceleration of the system by 50%?

    asked by Rachel on October 24, 2009
  75. physics

    When brakes applied to a moving car travelling at 60km/hr it decelerates at a uniform rate of 5ms-2. Calculate the time taken to reach a velocity of 36km/hr

    asked by bola on February 23, 2010
  76. physics

    Suppose that in the same Atwood setup another string is attached to the bottom of m1 and a constant force f is applied, retarding the upward motion of m1. If m1 = 5.30 kg and m2 = 10.60 kg, what value of f will reduce the acceleration of the system by 50%?

    asked by TPAIN on October 24, 2009
  77. Physics

    How come a heavy truck and a small car can both travel safely at the same speed around an icy, banked-curve road? I would think that since mass is increased, normal force is therefore increased, and force of friction is therefore increased. And since the

    asked by Hannah on October 19, 2010
  78. Biostats

    I am having problems in this course with following the professor. Can anyone help me with this problem Thanks need to calculate 99% CI for true mean with the following data: n=100, mean is 126 with sample variance of 402. I have to know the answer,

    asked by Grace on June 7, 2007
  79. Accounting

    March 3 Inventory units 60 per unit $1,500 total $90,000 March 8 Purchase 120 units $1,800 per unit total $216,000 March 11 Sal units 80 per units $5,000 total $400,000

    asked by Pat on August 28, 2011
  80. engineering

    in a proposed telesurgery application the image will be transmitted at 2*10^8m/s ovwe a roundtrip distance of 740km, the compression and decompression process for the images will take a total of 60m/s. what is the largest permissible value for the sources

    asked by Kenji86 on April 15, 2010
  81. chemistry

    Given the following chemical reaction: Zn+HCl-->ZnCl2+H2(g) If you measured the total volume of collected gas over water at 20 degrees celcius t be 428ml at a total pressure of 845 torr, how many milliliters of 2.6M HCl would be required to produce the

    asked by regina on December 4, 2010
  82. Physics

    If 400 gm of aluminum are put into 200 gm of water at 20 C in 110 gr. calorimeter of specific heat .093, and the temp.or stable equilibrium is 28.8 C, what is the initial temperature of the aluminum? specific heat of aluminum is .22..

    asked by Lambo on December 5, 2012
  83. physics

    a helicopter is ascending vertically with a speed of 5.20 m/s. at a height of 110 m above the Earth, a package is dropped from a window. how much time does it take for the package to reach the ground ? (hint: v0 for the package equals the speed of the

    asked by mary on April 15, 2012
  84. Medical Information Management and office practice

    At Allendale Psychiatric Hospital, the hospital census on January 4 is 110. According to the following data, what's the hospital census for January 5? Admissions 10 Discharges 2 A & D A. 99 B. 100 C. 108 D. 118 What is the correct answer?

    asked by jules on January 9, 2011
  85. Chemistry

    Suppose that you had a mercury-in-glass thermometer and calibrated to measure temperatures from -10 degrees C to 110 degrees C and you wished to measure a temperature of approximately 115 degrees C accurately. How might you use your thermometer to do it?

    asked by James on April 3, 2011
  86. science

    how do you do this question An aqueous solution of calcium chloride contains 2 grams of calcium chloride ( molar mass 110.98 g mol-1) in 100 ml calculate the concentration of chloride ion (Cl-) in the solution

    asked by Slaysliver on January 22, 2009
  87. math

    The ratio of the tens digit to the units digit is 1:4. If the digits are reversed, the sum of the new number and the original number is 110. Find the original number by using a systems of equations with elimination

    asked by misa on September 11, 2008
  88. pprecalc

    a windshield wiper on a a plymouth acclaim is 20 in. long and has a blade of 16in long. if the wiper sweeps through an angle of 110 degree, how large an area does the wiper blade clean?

    asked by greeny on October 2, 2012
  89. Algebra

    Ms. Jones has two job offers as a car salesperson. At one dealership, she will receive $600 per month plus a commission of 2% of the total price of the automobiles she sells. At the other dealership, she will receive $1000 per month plus a commission of

    asked by Tucker on January 30, 2013
  90. geometry

    An open rectangular glass tank with a horizontal base PQRS measures 80 cm by 50 cm by 34 cm. 110 liters of water is poured into the tank. v The tank is tilted towards edge PQ until the water just reaches the edge TU. w Calculate the value of d. s

    asked by pamela on June 19, 2012
  91. physics

    A light spring having a force constant of 110  is used to pull a 15.0  sled on a horizontal frictionless ice rink. The sled has an acceleration of 1.60 ? [2/27/12 9:41:56 PM] Matt Yeager: By how much does the spring stretch if it pulls on the sled at

    asked by Charlie on February 27, 2012
  92. Chemistry

    I need to find out what the total acid concentration is in Kool-Aid. If 23.3 mL of 0.1043M NaOH neutralize a 60 mL solution of Kool-Aid (10 mL) and water (50 mL), what is the total concentration in a 10.00 mL aliquot of Kool-Aid? If you prepared a standard

    asked by Julie on February 15, 2011
  93. Early Child Ed.

    Can you please check my questions and answers? 1. A three-year-old child who is developmentally delayed might: A. need training wheels on his two-wheel bike. B. speak in two-word sentences C. not be able to read. D. need someone to help cut his meat at

    asked by Tamera on July 12, 2007
  94. statistics

    The pie chart below shows how the total annual income for a certain family is spent. If the total annual income is , what amount is budgeted for Savings and Insurance combined?

    asked by donna on January 4, 2016
  95. math

    In December the average total rainfall in all of the deserts together is 0.89mm.Explain how to use the figures from the table to write a comparison of the total desert rainfall in August and December.

    asked by tiffany on March 31, 2011
  96. math

    Tim sells sneakers. He receives $9.75 an hour and 3% commission on sales. One week he works 24 hours and his sales total $1,879.95. What are his total earnings for the week ? Please help

    asked by sam on March 23, 2015
  97. financial math

    Mary is buying several items that cost $128.25 total. She is using a store coupon for 35% off her purchases. She has to pay 4% sales tax. Calculate the total cost of the items.

    asked by Anonymous on January 24, 2013
  98. Accounting

    Cupid Co. has total assets of $600,000 and its liabilities are equal to two-thirds of its total assets. What is the amount of Cupid Co.'s Owner's Equity? Please explain how you got this answer.

    asked by Anon on February 7, 2017
  99. Algebra/Word problem

    media services charges $20 for a phone and $30/month for its economy plan. what is the total cost for 10 months service C(t)= 30t +20= total cost is $500 for 10 months?

    asked by Amy on September 8, 2010
  100. algebra

    a) Find a polynomial R(p) that represents the total revenue when the shirts are p dollars each. b) Find R(5), R(10), and R(20). c) Use the bar graph to determine the price that will give the maximum total revenue.

    asked by Anonymous on November 11, 2010