Questions Asked on
November 26, 2015

  1. physics

    A stretched string of length 168 cm vibrates in its nth mode. The separation distance from node to antinode is 21 cm . What is the value of n?

    asked by Elia
  2. Latin

    I need help with this assignment. My answers are included but don't feel confident. Can you help? Directions: Conjugate the following verbs in the tense given in Latin and English 1. gero, gerere, gessi, gestus – to wear (present) answer: gero I wear 2.

    asked by Jessie
  3. Pre-Calculus HELP!!

    The length of a day in Philadelphia, Pennsylvania, is given by the sinusoidal function, f(t), which represents the number of hours of daylight t days into the year: f(x)=11+2.2sin(2pi/365)t-1.25).How many hours of daylight are there on the twelfth day of

    asked by Ellie
  4. Chemistry

    The equilibrium constant for Br2 + Br Br3 at 25 degrees is 18. Calculate the equilibrium constant Br3 Br2 + Br

    asked by Lori
  5. Maths

    the 9/10 student of class 5 was absent and only 3 were present . How many students are there in class 5 ⋅

    asked by Anandni
  6. Chemistry

    6.2g of NaOH is added to 800ml of water What is the molarity of the solution? What is the pH?

    asked by Tegan
  7. science

    what would happen if there is no revolution?

    asked by jinu
  8. statistics(business)

    Large group of students took a test in English and the final grades have a mean of 75 and a standard deviation of 8. If we can approximate the distribution of these grades by a normal distribution. What percentage of the students (ii) Should pass the test

    asked by ali
  9. geography

    what would happen if there is no revolution?

    asked by jinu
  10. statistics

    Large group of students took a test in English and the final grades have a mean of 75 and a standard deviation of 8. If we can approximate the distribution of these grades by a normal distribution. What percentage of the students (ii) Should pass the test

    asked by ali
  11. Mechanical engineering

    An I section beam of 4m length with end supports is required to carry a point load of 50 KN at its mid pint. The maximum bending stress is limited to 85 MPa, and Modulus of Elasticity of the steel s 200 GPa. Evaluate maximum bending moment that will be

    asked by Danny
  12. MATH

    Give the equivalent linear function in standard form: (ax + by = c): a.x=9-3y/-2 b.y=-4x+5/3

    asked by Camz
  13. Physics

    A spring has a spring constant that is 120 N/m, and has a 0.1 kg block attached to it. The spring and mass sit on a horizontal surface that has no friction. The block is pulled 0.2 m and then released. Please find the frequency of the oscillations, the

    asked by Jose Luis
  14. Physics

    Joan comes across a deep ravine. She was planning on this as she packed a 3.8 m portable telescoping extension ladder. It has a mass of 15 kg. She was told that in order to get to the skull’s last known location, she must get across this 2 m gap. --- |

    asked by Lilly
  15. Chemistry

    The pH of a buffer can be predicted using the Hendersen-Hasselbach equation: pH=pKa+ log([conjugate base][conjugate acid]) The choice of the conjugate acid-base pair (as you did in the previous questions) determines the pKa value to be used in the H-H

    asked by J
  16. Chemistry

    A chemist needs to prepare a buffer using the carbonate system (information in the table below) with a final pH of 6. Which components should they mix in water to product this buffer? H2CO3 HCO3- CO32- pKa 6.35 10.33 N/A

    asked by J
  17. Chemistry

    A chemist needs to prepare a buffer using the carbonate system (information in the table in the previous quetion) with a final pH of 10. Which components should they mix in water to product this buffer? Question options: H2CO3 HCO3- CO32-

    asked by J
  18. Chemistry

    Assume you have prepared 100.0 mL of a buffer solution using 0.400 mol of acetic acid (pKa = 4.74) and 0.400 mol of sodium acetate. The pH of this buffer solution is initially 4.74. After preparing this buffer solution, you added 55.0 mL of a 1.10 M NaOH

    asked by J
  19. math

    the measure of two supplementary angles have the sum of their measurements is equal to 180 degrees.

    asked by Anonymous
  20. physics

    frictional force

    asked by tolahun
  21. Math

    What is the circumference of d=2.1cm using 22/7

    asked by Mark
  22. Mathematics

    Find four consecutive even integers such that four times the greatest is 36 more than more than the sum of the other three.Four times a number increased by 5 is 37.Find the number.

    asked by Athena
  23. Math

    The length of the rectangle 5cm more than twice the width.The perimeter is 70.What is the area?

    asked by Rin
  24. Math

    The sum of two acute angles in a right triangle is 90 degrees. Find the acute angles on the right triangel wherein twice the first is 40 degrees more than thrice the second

    asked by Rin
  25. Math

    A thin plastic band 50 cm long is used to tie seven plastic pipes together. What is the radius of the pipe? The shape is a hexagon but not vertices but curved. My solution was , you get an eqilateral triangle with side 3 r 3 r = 50/6 r = 50/6/3 = 2.73 But

    asked by Manav
  26. Thermodynamics

    A closed cycle gas turbine unit operating with max. And min. Temp. Of 760 and 20 Celsius deg has a pressure ratio of 7/1. Calculate the thermal efficiency and work ratio? Ans = 42.7 % , 0.505 My answers are : Efficiency 42.7 % which is correct.. but work

    asked by Akki
  27. math

    a rectangular yard is 36.7 meters long

    asked by Perimeter
  28. Stba

    Two equal mass at distance r attract at force F . Now 20% mass from one sphere is transfer to the another sphere. What should the %change in the distance between them so F become same .

    asked by Anu
  29. mechanics

    Short column of rectangular cross section 160mm by 60mm carrying point load of 40 KN at max eccentricity position along the longer axis so that no tensile stress is applied. I worked out max eccentricity as 26.66 mm from RH and LH, and compressive stress

    asked by Danny
  30. physics

    A car of mass 800kg is climbing an incline at 10 degrees to the horizontal. Determine the increase in potential energy of the car mass s it moves a distance of 50m up the incline

    asked by Kyle
  31. accounting 1

    At the beginning of the year, Keller Company's liabilities equal $64,000. During the year, assets increase by $60,000, and at year-end assets equal $190,000. Liabilities decrease $10,000 during the year. What are the beginning and ending amounts of equity?

    asked by Anonymous
  32. maths

    1. A ball costing €50 was increased in price by 1%. What was the new price? 2. The perimeter of a swimming pool is 70 metres. If the width is 10 metres, what is the length of the pool? 3. A DVD player can be bought for €250 cash or for a down payment

    asked by liam
  33. Pre Calculas

    True or false (logx)^2=2logx True or false in56/in7=in8 i got true for the first one and false on the second im sorry for posting today but i just need someone to check

    asked by Ryan
  34. bookkeeping

    Question use each of the following words or terms in a statement relating to bookkeeping/accounting Liabilities Assets Owner Equity Please write out how to do this. Thank you

    asked by nicey
  35. physics

    Determine if the tow truck below must use mode 4 drive streets to climb the slope and the weight of the tow car is 3500kg weight of the car is 1800kg Coefficient of friction between the tires and the roadway is 0.3

    asked by Gene
  36. math

    The production costs for 4 lollies is 9.55 strawberry, 8.70 orange, 9.99 grape, 6.30 bubblegum. The packaging is the same for all lollies at 5.00 per lolly. Owners like to add 25% markup on their stock. Calculate the retail price of the strawberry lolly.

    asked by megan
  37. Maths

    Find coordinates of the points on the given curve at which it's gradient has the given value. Y=x^3+x^2 Gradient = 1 I know that dy/dx = 3x^2+2x I'm not sure what to do next. Please help Thankyou 😘

    asked by Anonymous
  38. Programming

    Declare Integer count For count=1 to 3 Step 2 Display count End For What would the output be?

    asked by John
  39. ENGLISH - Please verify my answers

    1) In which sentence does the italicized word have a negative connotation? A) Jenna's, green eyes and dark eyelashes gave her an exotic look B) Jack, who is the most outspoken member of the group, led the position to the new rule. C) Matthew was scrawny

    asked by BASTI
  40. Chemistry

    A sample of oxygen occupies 38.9L at STP. What will the pressure need to be in Torr. if the volume is to be changed to 32.2L without a change in T. Is this P1V1/T2=P2V2/T2? How would I set it up.

    asked by Johnny
  41. Chemistry

    A Sample of propane, C3H8, occupies 5.00L at 270C and 309torr. The volume of the canister is changed to 1.85L while the pressure remains constant. What is the Temperature, in K and 0C, of the gas after the change? What would be the setup for this problem?

    asked by Adam
  42. penn foster

    occupational therapy test

    asked by Anonymous
  43. maths

    Stuck on these questions! Help! 1. A ball costing €50 was increased in price by 1%. What was the new price? 2. The perimeter of a swimming pool is 70 metres. If the width is 10 metres, what is the length of the pool? 3. A DVD player can be bought for

    asked by liam
  44. READING & WRITING PROCESS

    1) CARMEN ASSERTS THAT A STRONG CONCLUSION TO AN ESSAY SHOULD LOOK AHEAD AND PRESENT A CALL FOR ACTION. CARL AGREES, EXCEPT HE INSISTS THAT A STRONG CONCLUSION SHOULD RESTATE THE THESIS VERBATIM. WHO IS CORRECT? A) Both Carmen and Carl are correct B) Only

    asked by Debora
  45. c programming

    Write a program to read from a file called "input.txt" information about 5 workers. Each line would contain two values respectively, an employee ID and the employee's monthly salary. Assume that the data from the input file is stored in a format as shows

    asked by kevin
  46. Geography

    What are some issues that guest workers face

    asked by Anonymous
  47. CAT, Business studies, Life Sciences and Pure Math

    I'm not so sure if I should be changing Life Sciences to Consumer Studies OR business to Consumer Studies.. I don't know what I wanna do in varsity. would you kindly assist me on both subjects and career.. I'm in grade 10

    asked by Lihle
  48. Math

    The functions f(x) and g(x) are described below: f(x) = 32x + 8 g(x) = 32x − 9 The graph of g(x) is obtained by shifting down the graph of f(x) by _____ units.

    asked by Fionna
  49. Trigonometry

    A man standing on top of a mountain 1500m high observes the angle of depression of the top of a steeple to be 40 degrees, if the height of the steeple is 50m, how far is it from the mountain ?

    asked by Hamz jibz
  50. Medical Billing and coding

    Can I retake a Quizz to help raise my grade?

    asked by Melodee
  51. Math (prob)

    The probability of an outstanding student pass a biology test is 60%. If he takes three test,which are the experimental results for each test? Please, help me to understand.

    asked by Bet
  52. Physics

    A block with a mass m = 3.50 kg sits on a surface with a coefficient of static friction µs = 0.520. A spring with spring constant k = 75.0 N/m is hooked onto the block, and is slowly pulled horizontally, gradually stretching the spring. (a) When the

    asked by Jade
  53. Pre Calculus HELP!?

    The length of a day in Philadelphia, Pennsylvania, is given by the sinusoidal function, f(t), which represents the number of hours of daylight t days into the year: f(t)= 10+2.8sin(2pi/365)*(t-1.35). How many hours of daylight are there on the 100th day of

    asked by Ellie
  54. Chemistry

    The theoretical yield of a reaction is the amount of product obtained if the limiting reactant is completely converted to product. Consider the reaction: P4(s) + 6 Cl2(g) → 4 PCl3(l) If 19.47 g P4 is mixed with 6.85 g Cl2, calculate the theoretical yield

    asked by Riley
  55. Biology

    How do you think increasing temperature would affect the rate of photosynthesis?

    asked by Rose
  56. Biology

    How can i design an experiment to determine which wavelengths of light provide the optimal energy for photosynthesis

    asked by Rose
  57. discriminant

    x^2+8x+10

    asked by Anonymous
  58. maths.augusco

    720 apples is shared in the ratio 1/5 3/10 7/1 what is the ratio of each

    asked by kojo
  59. English

    1. I have a lot of work to do. - Why don't you ask your brother to help you? - You should ask your brother to help you. - So you can't go out to play soccer, can you? - (Somethine else) 2. I am going to Vietnam this winter. - Really? Congratulations! -

    asked by rfvv
  60. Phyics

    two blocks are moving down a ramp that is inclined at 30.0. Box 1(of mass 1.55kg) is above box 2(of 3.1kg) and they are connected by a massless rod. Find the tension of the rod if the coefficient of kinetic friction for box 1 is .226 and box 2 is .113 my

    asked by Jess
  61. Math

    prove sin2x+cos2x+1 tan(pi/4+x) ______________ = __________ sin2x+cos2x-1 tanx so what I did tan(x) (1+cos(2x)+sin(2x)=tan(pi/4+x) (-1+cos(2x)+sin(2x)

    asked by Lana
  62. Precalculus ????

    1. At the amusement park, you decide to ride the Ferris wheel, which has a maximum height of 50 meters and a diameter of 35 meters. It takes the wheel three minutes to make one revolution. If you start your ride at the midline and the ferris wheel rotates

    asked by Ella
  63. English

    3. I didn't see the movie Star Wars. - Me neither. - I saw the movie. It was great. - Really? Everyone in my clas saw the movie. You have to see it. It's great. - You don't need to see the movie. It's not so good. - I saw the movie with my family last

    asked by rfvv
  64. English

    1. I like pears. - Me, too. - Me too. - I like pears, too. 2. I don't like pears. - Me, neither. - Me neither. - I don't like pears, either. ================= Are the answers all grammatical? Do you have some more common answers? Do we have to put commas

    asked by rfvv