# Shreya

Newest questions and responses by Shreya-
## Physics

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

*asked on June 19, 2018* -
## 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* -
## 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* -
## Maths

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

*asked on July 14, 2017* -
## 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* -
## Science

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

*asked on May 12, 2017* -
## Maths

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

*asked on May 12, 2017* -
## 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* -
## 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* -
## 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* -
## Science

How many electrons are present in 0.01 moles of sulphate ion

*asked on November 16, 2016* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## English grammar

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

*asked on March 28, 2016* -
## 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* -
## English grammar

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

*asked on March 28, 2016* -
## Math

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

*asked on October 14, 2015* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## Chemistry 12

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

*asked on January 25, 2013* -
## 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* -
## 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* -
## 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* -
## Chemistry 12

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

*asked on January 25, 2013* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## Pre-Calculus

Trigonometric Functions, Radian Measure ∏

*asked on November 6, 2012* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## Pre-Calculus

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

*asked on October 2, 2012* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## maths

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

*asked on September 23, 2012* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## biology what is DNA

why is DNA replication necessary to life?

*asked on February 22, 2012* -
## biology

why DNA replication necessary to life?

*asked on February 21, 2012* -
## Biology- DNA

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

*asked on February 20, 2012* -
## 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* -
## biology

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

*asked on February 16, 2012* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## math-calculus

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

*asked on January 18, 2012* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## math-calculus

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

*asked on January 18, 2012* -
## 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* -
## 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*

## Pages

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