Shreya

Newest questions and responses by Shreya
  1. Physics

    find the magnitude resultant of two forces (3j+4j) and (3j+4k)

    asked on June 19, 2018
  2. Science, Maths

    A block and tackle of 5 pulleys is used to raise a load of 5o kgf steadily through a height of 20m. The work against friction is 2000J.Calculate the work done by effort, efficiency and mechanical advantage.

    asked on September 23, 2017
  3. Physics

    The length of wire is 25.5cm and it's radius is 1.02mm. Calculate the percentage error in mesurement of its volume

    asked on September 10, 2017
  4. Maths

    Devide the sum of 5/21 and 4/7 by their difference

    asked on July 14, 2017
  5. Physics

    A child leaves her book bag on a slide. The bag, which is at the top of the slide, starts from rest and reaches the bottom in 1.63 s. The mass of the book bag is 2.55 kg, the length of the slide is 2.90 m and the angle of incline is 35.0°. (Assume the

    asked on June 11, 2017
  6. Science

    Why the ball of ventrical is thicker than the ball of atrium

    asked on May 12, 2017
  7. Maths

    Why the ball of ventrical is thicker than the ball of atrium

    asked on May 12, 2017
  8. physics

    a uniform meter rule is pivoted at 20cm mark . It is balanced when mass of 100gm on 10cm mark and mass of 50 gm on 30 cm mark are suspended. Find d mass of meter rule

    asked on March 26, 2017
  9. Maths

    A circular park of 28 m diameter has been constructed. A 3.5m circular track outside has been developed along the park. Using algebric formulae, find the area of the track around the park.

    asked on December 16, 2016
  10. math

    I bought 12 dozens of eggs at Rs 7.20 per dozen .Eighteen eggs were broken .I sold the remaining eggs at the rate of Rs 7.50 per dozen .find my gain or loss.answer is Rs 7.65

    asked on November 22, 2016
  11. Science

    How many electrons are present in 0.01 moles of sulphate ion

    asked on November 16, 2016
  12. maths

    ABCD is a parallelogram in which the adjacent angles are (4x – 15)and (5x – 3). Find the measure of all the angles of the parallelogram.

    asked on August 10, 2016
  13. math

    Two 5-digit numbers have the same sum of digits: 2. The largest possible difference between two such numbers has the sum of digits: A 1 B 9 C 18 D 27 E 36

    asked on June 28, 2016
  14. Physics

    A bullet is moving with velocity u after emerging from a plank its velocity reduces by u/20 then find the total number of planks required to stop this bullet?

    asked on June 22, 2016
  15. Biology (High school science)

    If non-nucleated cells of meristematic tissue are used for tissue culture, then growth rate will be : a) High b) Average c) Very low d) Growth may not take place. Please help!

    asked on March 30, 2016
  16. English grammar

    Fill in the blanks with appropriate form of verb (past tense) The jewellery _____(be give)to her by her husband, who _____ died some years before. Since his death, she did not have the heart to wear it, yet she did not want to sell it. Now it seemed that

    asked on March 28, 2016
  17. English grammar

    Punctuate: My orchard was often robbed by schoolboys and my wife's custards plundered by cats. I think the answer would be: My orchard was often robbed by schoolboys; and my wife's custards, plundered by cats. Am I correct? Why/ Why not?

    asked on March 28, 2016
  18. English Grammar

    Please explain adverb phrases, prepositional phrases, verb phrases, noun phrases and adjective phrases along with examples. 2) "How is the weather today, Sam?" said Jonh. Why isn't a comma required before "said John?"

    asked on March 28, 2016
  19. English grammar

    1) Observe the relation and fill in the blanks. food:crude:: should: ____ (I think the answer could be prude but it could also be would, could etc. I considered these answers because all of them rhyme with should just like crude rhymes with food. But there

    asked on March 28, 2016
  20. English grammar

    1) If it rained heavily, the reservoirs______ full. Use the right form of verb to fill in the blanks. a) will be b)would be c)would have been d) will have been (I think the answer is option b). Am I correct?)

    asked on March 28, 2016
  21. English grammar

    Punctuate the following sentence: How is the weather today Sam said John. I think the punctuated sentence would be: "How is the weather today Sam?" said John. I am not sure if there is a comma before Sam and said. Am I correct? Please help!

    asked on March 28, 2016
  22. English grammar

    "Fame shall sound thy praise from sea to sea". Can this be considered an example of personification?

    asked on March 28, 2016
  23. English grammar

    Which of the following is a simple sentence? a) He ran fast but he failed to win the prize. b) Although he ran fast he failed to win the prize. c) In spite of running past, he failed to win the prize. d) He failed to win the prize because he did not run

    asked on March 28, 2016
  24. English grammar

    Honour and reputation (is/are) dearer than life. Suitable form of verb is:

    asked on March 28, 2016
  25. Math

    (3-4sin^2A)(1-3tan^2A) =(3-tan^2A)(4cos^A-3)

    asked on October 14, 2015
  26. Maths

    theo invests £800 in an account that pays 2% simple interest each year how much interest is earned in a year how much there will be in the account after 5 years how much will there be in 10 years

    asked on May 17, 2015
  27. physics

    A river is flowing along the east direction with a velocity of 10km/hr. A person heads towards north with a velocity of 2km/hr. what is the velocity of the person with respect to ground?

    asked on November 30, 2014
  28. chemistry

    What must be the velocity of a beam of electron if they are to display a de broglie wavelength of 1A°?

    asked on July 6, 2014
  29. Ms sue please help

    Hey ms sue can you please help me to simplify this paragraph? Raynaud's disease occurs when the small arteries (arterioles) that serve the fingers, toes, ears, or nose go into spasm. When arterioles go into spasm, they cut off blood supply and cause digits

    asked on May 13, 2013
  30. Raynaud's

    Hey I want to shorten this paragraph out which tells what Raynaud's is, can anyone please simplify it and make it shorter thanks? Raynaud's disease occurs when the small arteries (arterioles) that serve the fingers, toes, ears, or nose go into spasm. When

    asked on May 11, 2013
  31. Biology Raynaud's Disease

    Hey im doing a powerpoint presentation on this raynaud's disease, and could someone please give me some good sites to go through to get info abt this and please mention anything you know about the raynaud's disease as well, thanks.

    asked on April 30, 2013
  32. Biology - URGENT Enzyme Lab

    Did a catalase producing hydrogen peroxide lab, used manganese dioxide, fresh frozen liver, potato, ice, fine clean sand, etc. Basically just added hydrogen peroxide to the catalysts under diff conditions and stuff. Just don't get this question which is :

    asked on April 5, 2013
  33. Biology Difference b/w Heat Exhaustion/Heat Stroke

    I want to know the causes of heat stroke and heat exhaustion. I cant seem to find separate causes for the two, finding very different answers online :|

    asked on February 8, 2013
  34. Biology

    Hey I am doing a lab, the link is down h t t p : //w w w . sd67 . bc . ca/schools/salc/biology%2012/module%20c%20-%20human%20biology/unit%2010%20-%20respiratory%20system/Homeostasis%20Lab .pdf And I really would like help with #1 My data is right here Pre

    asked on February 7, 2013
  35. Chemistry 12

    which of the following 0.10M solutions is basic? A LiCl B K3Po4 C NaCLO4 D NH4NO3 Is it C?

    asked on January 25, 2013
  36. Chemistry 12

    define the term strong bronsted lowry acid it is 100% ionized in solution? is that it?

    asked on January 25, 2013
  37. Chemistry 12

    name a compound that acts as a weak base? methanol? define the term weak bronsted-lowry base im not sure how to put this in words, but a weak base is found when you got a strong acid, when your ka is high, kb will be low.

    asked on January 25, 2013
  38. Pre Calculus 12

    permuations an orchestra has 2 violinsts, 2 cellisst, and 4 harpists. Assume that the players of each instrument have to sit together, but they can sit in their own group. In how many ways can the conductor seat the members of the orchestra in a line? I

    asked on January 25, 2013
  39. Chemistry 12

    The value of Kb for HPO₄²- is? A. 2.2*10^-13 B. 6.2*10^-8 C. 1.6*10^-7 D. 4.5*10^-2 I don't get how to solve this.

    asked on January 25, 2013
  40. Chemistry 12

    The [OH-] of a solution with a PH 5.75 is is it 5.6*10-9M?

    asked on January 25, 2013
  41. Pre Calculus 12

    Identify the point on the unite circle coressponding to an angle of 300 degrees in standard position A (-√3, -√3/2) B (-√3/2, 1/2) C (1/2, -√3/2) D (1/2, -√3 ) I don't get how to figure this out :|

    asked on January 24, 2013
  42. Pre Calculus 12

    Another sine/cosine question i don't get in vancouver on certain day, high tide is 20m at 2am, the next low tide is 8m at 6am, what an equation that represents height (h)of water at any time (t)since midnight) what is the height of water at 8:45AM? What is

    asked on January 23, 2013
  43. Pre Calculus 12

    Modelling with sine/cosine A Ferris wheel has a diameter of 30m. The bottom of the wheel is 1.5m off the ground it takes 3.5min to make one complete revolution. a person gets on ferris wheel at its lowest point at time = 0. write an equation that

    asked on January 23, 2013
  44. Pre Calculus 12

    The height h, in metres, above the ground of a car as a ferris wheel rotates can be modelled by the function h(t) = 18cos(πt/80) +19 what is the minimum height of a car? do i like subtract 19 from 18 ? what is the maximum height of a car? do i add the 19

    asked on January 23, 2013
  45. Pre Calculus 12

    Graphing trigonometric functions A sinusoidal function has a maximum at (2,10) and its next minimum (5,-2) find an equation that represents this situation A sinuosoidal function has a zero at (5,0) and its next minimum is (7,-4). find an equation that

    asked on January 23, 2013
  46. Pre Calculus 12

    Laws of logarithms evualuat using change of base rule log(√8)16 ^the square root 8 is supposed to be subscript. the answer i got was 8/3, not sure if that is right

    asked on January 23, 2013
  47. Pre Calculus 12

    Solving problems that involve logarithms the sound at a rock concert decreases by 10% for every 5m travvelled. how far does it take for a volume of 2000 decibels to decrease to 20 decibels? i don't know what to do for this one the growth decay formula i

    asked on January 23, 2013
  48. Pre Calculus 12

    Laws of Logarithms Evaluate: without using a calculator, except for the first one. The 5.6 is supposed to be subscript, but i don't know how to make it small. 4log(5.6)84 log84/log5.6 Do I multiply this by four or something? both of the logs?

    asked on January 23, 2013
  49. Pre Calculus 12

    I also do not get these inverses questions y = 5(x-3)^3 x = 5(y-33)^3 I divided 5 on both sides and got 1/5x = (y-3)^3 Then do I cube root the 1/5x or something to get rid of of the cubed on (y-3)? Also y = x-2/5x-3

    asked on January 22, 2013
  50. Pre Calculus 12

    Im trying to find the inverse of this: y = 2/3x-4 I got to this step x+4 = 2/3y I need to divide by 2/3 to get rid of 2/3 beside the y, but i don't know how to divide x+4/2/3 that looks complicated :\

    asked on January 22, 2013
  51. Pre Calculus 12

    Im going over my pre calculus 12 exam, and I need help with one question from the chapter Transformations of graphs and stuff. Combining Transformations 2y = f(5x-10)+8 The original points are (4,6) and the new points I got by translating it and stuff are

    asked on January 22, 2013
  52. Pre Calculus 12 urgent

    andrew is working on a binomial problem (1/2x-y)^7. He asks u to : i) what the coefficient of the 6th term ii) find the term that has the variabes x^47^3 (ex. 34x^4y^3) iii) find the first three terms of the expansion I really need help with that ^ . I

    asked on January 18, 2013
  53. Pre Calculus 12

    Im on the chapter of permutations/combinations/fundamental counting principle need help with 2 questions 1. emma is arranging her books in piles on her desk. she has 5 math books, 3 english books, and 4 science books. how many ways can she arrange them if

    asked on January 18, 2013
  54. Pre-Calculus

    Same problem with this question The angle θ is in the fourth quadrant, and tan θ = -3/7. Point P is on the terminal arm of angle θ. Which is a possible coordinate for P? A) -21,9 B) 9,-21 C) -9,21 D) 21,-9

    asked on November 14, 2012
  55. Pre-Calculus

    The angle θ is in the second quadrant and tan θ = -3/5. Point P is on the terminal arm of angle θ/ Which is a possible coordinate for P? A) (-5,√29) B) (-3,√29) C) (-10,6) D) (-6,10) I drew the triangle, and aren't the coordinates supposed to be

    asked on November 14, 2012
  56. Pre-Calculus

    Trigonometric Functions, Radian Measure ∏

    asked on November 6, 2012
  57. Pre-Calculus

    Applications of Logarithms I really need help with this log stuff please. If the PH of acetic acid is 5, what is the PH of hydrochloric acid if it is 200 times more acidic? the formula is right here: P=P0*10^PH2-PH1 200=10^5-PH1 log200=(5-PH1)log10 And I

    asked on October 20, 2012
  58. Pre-Calculus - Reiny

    Reiny you helped me with this logarithm yesterday: How did you write it out as log2 ( √A / B^3 ) Laws of logarithms combine, write as a single logarithm Need help on this question please, Im stuck, don't know where to go abouts from here: I did it on

    asked on October 17, 2012
  59. Pre-Calculus

    Laws of logarithms combine, write as a single logarithm Need help on this question please, Im stuck, don't know where to go abouts from here: I did it on paint and uploaded it onto this website because I don't know how to do the subscript numbers, so it

    asked on October 16, 2012
  60. Pre-Calculus

    Laws of Logarithms Without using a calculator use the change of base rule to evaluate 1. a) log(subscript8)32(hint use base 2) =log(subscript2 32)/log(subscript2 8) = 5/3 b) log(subscript36)1296. This one doesnt even give you a hint, so how do you know

    asked on October 16, 2012
  61. Pre-Calculus

    Exponential Functions A=P(X)^t/n A-final amount P-initial amount X-growth rate t-time n-number of growth periods The teacher had this question as an example and did it however i do not understand one thing: The Ebola virus double every 30 min. If there are

    asked on October 16, 2012
  62. Pre-Calculus

    Exponential Functions This is my equation that models the accumulated amount (A) at any time t. A = 1000(1+0.08/12)^t*12 ^ How do I plot that into the graphing texas instruments calculator? What I do I type in the y-axis?

    asked on October 8, 2012
  63. Pre-Calculus

    solve by fully factoring x^3-7x-6=0 How would I fully factor this?

    asked on October 2, 2012
  64. Pre-Calculus

    Radical Functions Graph y=(x-3)(x+2) and y=√(x-3)(x+2). where are the x-intercepts of each function ?why? for the first one, i know that whatever is inside the brackets is opposite, so the x intercepts would be at 3, and -2. but the whole radical thing

    asked on October 2, 2012
  65. Pre-Calculus

    Rational Functions y = (x^2+7x-4)/(x-2) Since the degrees of both the numerator and denominator are the same, I would use the leading coefficient, and both the rational functions start with 1, so would the horizontal asymptote be 1? Also don't get how to

    asked on October 2, 2012
  66. Pre-Calculus

    Rational Functions does the following function have a hole or a vertical asymptote or both? how do you know? find the y-value at that point. y=x^2+7x+12/x^2+8x+15 I factored this out to y = (x+3)(x+4)/(x+5)(x+3) The x+3's cancelled out. I don't get the

    asked on October 2, 2012
  67. Chemistry

    I'm having a hard time understanding Endothermic and Exothermic reactions, like their standard format and stuff. For Exothermic reactions the heat is getting released into the surroundings, the products will be less than the reactants, so I would assume

    asked on September 30, 2012
  68. Pre-Calculus

    Composition of Functions If f(x) = 2x+1 find A. f o f(x) f(f(x)) = f(2x+1) f(2x+1) = 2(2x+1) f(f(x)) = 4x +2 B. f o f o f o f(x) ^ I don't get how to solve this one C. f o f o f o f o f ...o f(x) n functions of f ^ I also don't get how to solve this one

    asked on September 27, 2012
  69. Pre-Calculus

    Composition of Functions f o g(x)=f(g(x)) --> I know that this is eqivalent to f(g(x)) Given f(x) = 2x+1, and g(X) = 3x+1 find:f o g(x)=f(g(x)) This is what I did, but I don't think Ive solved it correctly f(g(x)) = f(x-3) f(x-3) = 1(x-3)-3x+2 =x-3-3x+2

    asked on September 27, 2012
  70. Pre-Calculus

    Operations with Functions write the function below as either a sum/difference/product/quotient of 2 r more functions a. h(x) = x^2+3x+9 How Would I do this? My teacher just did this f(x) = x^2 g(x) 3x+9 ^I don't really understand h(x)=(x+5)(x-3) how would

    asked on September 26, 2012
  71. Pre-Calculus

    Graphing Polynomials Decide whether each of the following is sometimes true, always true, or never true and explain reasoning. A. A cubic function has 2 different x-intercepts ^Never true, has to have 3? B. A cubic function has 3 x-intercepts ^ Always true

    asked on September 26, 2012
  72. Chemistry

    if you double the concentration of HCL acid, will that double rate of reaction? i have to explain in terms of the theory of collision. Wont doubling the concentration double the rate as well?

    asked on September 25, 2012
  73. Chemistry

    out of these conditions, which would result in fastest reaction? a. 2.0M HCL, powedered CaCO3 chip, 50 degrees celsius b. 6.0M HCL, CaCO3 chip, 25 degrees celsius c. 6.0M HCL, powdered CaCO3, 50 degrees celsius. d. 2.0M HCL, CaCO3 chip, 50 degrees celsius.

    asked on September 25, 2012
  74. maths

    (18/9(4-2)+5)

    asked on September 23, 2012
  75. Pre-Calculus

    -5x divided by x, how come that equals -5, but not -5x, how do the x's cancel out?

    asked on September 18, 2012
  76. Pre-Calculus need help in an Hour before test

    y=f(x+5/2) I timesd x+5 by 2 to get rid of 2 at the bottom and timesd y by 2. Then to get rid of 2 from y i divided it, and i got this. y=1/2f(x+5) however my teacher got y=f(1/2(x+5)) what did i do wrong?

    asked on September 14, 2012
  77. Pre-Calculus

    Need help with this question, don't get it. Given the relation x^2+3x=y^2-2y, what is the new relation if it has undergone: A. vertical expansion by 2 B. Horizontal expansion by 3 C. Vertical compression by 4/5 D. Horizontal compression by 1/5 E.

    asked on September 13, 2012
  78. Pre-Calculus Graphs expansions/compressions

    Need help with this question, don't get it. Given the relation x^2+3x=y^2-2y, what is the new relation if it has undergone: A. vertical expansion by 2 B. Horizontal expansion by 3 C. Vertical compression by 4/5 D. Horizontal compression by 1/5 E.

    asked on September 12, 2012
  79. Biology

    Individuals whose characteristics are well-suited to their environment survive. Individuals whose characteristics ar not well-suited to their environment either die or leave fewer offspring. This principle Darwin called survival of the fittest. how i

    asked on March 4, 2012
  80. biology tutor on jiskha

    i post my biology questions here today and few days ago no teacher reply. there not any biology tutor on here?

    asked on February 22, 2012
  81. biology

    any site i go onto that be animation site to find out about nucleic acids and protein synthesis? this chapter soo hard. codon, anticodon i need animation.

    asked on February 22, 2012
  82. biology what is DNA

    why is DNA replication necessary to life?

    asked on February 22, 2012
  83. biology

    why DNA replication necessary to life?

    asked on February 21, 2012
  84. Biology- DNA

    why dna replication necessary to life? i think it because it carry genetic information?

    asked on February 20, 2012
  85. biology anyone..

    please i need this by tomorrow. if nucleii are 3 micrometres long, how big are the cells? these r 2 questions i not get.

    asked on February 16, 2012
  86. biology

    this part of organism usually found underground, what organele conspicuously absent?

    asked on February 16, 2012
  87. easy math

    I converting 0.001mm to micrometers using staircase method and micro come under millimeter, so that mean move one decimal to right so would it not be 0.01?

    asked on January 31, 2012
  88. easy math

    i want know how to say this in words. I try myself in brackets. i am doing this for bio class so if i have to speak out loud tomorrow i be able to correctly say numbers. 1 585 000 000 ( 1 billion, 585 million hundred thousands) 1 585 000 ( 1 million, five

    asked on January 31, 2012
  89. chemistry

    Elemental antiomony made by these reactions down below: Sb2S3 + 5 O2 - > Sb2O4 + 3 SO2 Sb2O4 + 4 C - > 2 Sb + 4 CO how many grams O2 needed to prepare 1.00g of Sb? how many grams Sb formed when 84.9g of Sb2S3 and 39.0g of O2 r used in first reaction and

    asked on January 25, 2012
  90. very easy math question

    i doing my physics work and so i have to convert 0.0023mm to meters and it seem so easy but i not know how. i first convert it to cm, i times by ten then i divide by 100 to give me meters so i get 0.0023m but it suppose to be 2.3*10^5 m

    asked on January 20, 2012
  91. math-calculus

    solve for x. |3x-2| = |2x+5|+1 okay so for these one it be |3x-2| = |2x+5| because 1 times in with |2x+5| or it be (-2x-5)

    asked on January 18, 2012
  92. math-calculus

    |2x-3|-|2x+5| = 0 i please need helps with this.

    asked on January 18, 2012
  93. math-calculus

    using quadratic formula solve |x^2-2x-6| = 4. and answer have to be 1+-sqrt3, 1+-sqrt11 i just not get how to get this.

    asked on January 18, 2012
  94. math-calculus

    value of |7|-|-6|+|-cubicroot-64| i got 25 after doing whole thing but real answer be 5, i not get how to get that.

    asked on January 18, 2012
  95. math-calculus

    if graoh of y = g(x) passes through point (-3,-6) then graph of y = |g(x)| must pass through point. how it be this answer i want to know (-3,6)

    asked on January 18, 2012
  96. math-calculus

    |3-x|-1 = |4x+2| i try to do this and i not get correct answer which be -4/3 and 0.

    asked on January 18, 2012
  97. math-calculus

    solve for x. |3x-2| = |2x+5|+1 okay so for these one it be |3x-2| = |2x+5| because 1 times in with |2x+5| or it be (-2x-5)

    asked on January 18, 2012
  98. math-calculus

    |2x-3|-|2x+5| = 0 i please need helps with this.

    asked on January 18, 2012
  99. math-calculus

    solve equation |x^2-2x-6| using quadratic formula. i not get how to do this and it says quadratic formula.

    asked on January 18, 2012
  100. math-calculus

    |2x+1|-|x-2| = 2 i not get how to do this cause everything on one side i never did these question like this before.

    asked on January 18, 2012

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