Karan
Most popular questions and responses by Karan
physics
A toy plane p starts flying from point A along a straight horizontal line 20 m above ground level starting with zero initial velocity and acceleration 2 m /s² as shown. At the same instant, a man P throws a ball vertically upwards with initial velocitu
asked on July 15, 2014 
chemistry
The equilibrium constant of the reaction CH3COOH (l)+C2H5OH (l)=CH3COOC2H5+H2O is 4.if one mole of each of acetic acid and ethyl alcohol are heated in presence of little concentrated H2SO4 at equilibrium the amount of ester present is?
asked on July 7, 2014 
physics
For a particle undergoing rectilinear motion with uniform acceleration, the magnitude of displacement is one third the distance covered in some time interval. The magnitude of final velocity is less than magnitude of initial velocity for this time
asked on August 19, 2014 
physics
A lift starts from the top of a mine shaft and descends with a constant speed of 10 m/s. 4 s later a boy throws a stone vertically upwards from the top of the shaft with a speed of 30 m/s. Find when and where stone hits the lift [take: g=10 m/s²]
asked on July 17, 2014 
chemistry
The equilibrium constant of the reaction CH3COOH (l)+C2H5OH (l)=CH3COOC2H5+H2O is 4.if one mole of each of acetic acid and ethyl alcohol are heated in presence of little concentrated H2SO4 at equilibrium the amount of ester present is?
asked on July 7, 2014 
physics
The coefficient of apparent expansion of a liquid when determined using two different vessels A and B are gamma1 and gamma2 respectively. If the coefficient of expansion of the vessel A is alpha, the coefficient of linear expansion os the vessel B is
asked on April 16, 2015 
physics
A rod of length L = 1.2 m pivots freely about one end. The rod is held horizontally and released, with no intial velocity. Find the angular velocity of the rod as it passes through the vertical orientation. (Use conservation of energy. The rotational
asked on December 12, 2012 
physics
1.∫ x³(x+1)dx 2.∫ (1cot²x)dx 3.∫ cosx(tan x + sec x) dx 4.∫ dx/√5x+8 using u= 5x+8 and using u= √5x+5
asked on June 19, 2014 
physics
An astronaut is on the surface of planet whose air resistance is negligible. To measure the acceleration due to gravity(g) he throws a stone upwards. He observe that the stone reaches the surface to a maximum ht of h =10m(which is negligible is compare
asked on August 19, 2014 
geometry
find k if one of the lines given by kx^2+10xy+8y^2=0 is perpendicular to 2xy=5
asked on March 2, 2013 
geometry
the sides of a quadrilateral abcd are 6cm,8cm,11cm and 12cm respectively,and the angle between the first two sides is a right angle.find its area.
asked on June 22, 2011 
physics
A train starts from station A at 1pm and reaches station B at 3 pm, aftet travelling 108 km. It halts at station B for one hour and then starts for station c which is 42 km fron station B. It reaches station c at 7pm on the same day. The avg speed fo the
asked on August 19, 2014 
science
The velocity of sound in air at 27°celcius is 340m/s calculate the velocity of sound in air at 227°celcius ?
asked on January 21, 2017 
physics
A body starts with an initial velocity of 10m/s and moves along a straight line with a constant acceleration. When the velocity of the particle becomes 50 m/s the acceleration is reversed in direction without changing magnitude. Find the velocity of the
asked on July 17, 2014 
SIMPLE INTEREST
The rum of money that will produce ₹1770 as simple interest in 15/2 years as 8% at per annum is.
asked on February 8, 2016 
SIMPLE INTEREST
if ₹250 amounts to ₹285 in 2 years, find the rate percent per annum.
asked on February 8, 2016 
geometry
the length of the median drawn to the hypotenuse of a right triangle is represented by 3x7, while the hypotenuse is represented by 5x4. Find the length of the median.
asked on January 7, 2012 
sciecnce (hypothesis)
Am doing a experiement with a egg and trying to see if the shell dissolves hypothesis: If the solution is vinegar then the egg shell will dissolve. Is the hypothesis correct
asked on September 18, 2011 
Chemistry
The equilibrium constant for the reaction 2SO2 + O2 2SO3(all are gases) at a certain const temperature is 846.4mol/dm^3. At equilibrium in a 1dm^3 vessel, 0.5 moles of SO2, 0.1 moles of O2, and 4.6 moles of SO3 were found. How many moles of oxygen must be
asked on October 29, 2015 
Physics
Research on the physics of living systems.Give two examples to show how physics
asked on July 15, 2016 
maths
ABC is a triangle BD & CE are altitudes drawn from the vertex B & C. Prove that ABC is an isoceles triangle
asked on June 19, 2013 
Social Studies
What are the social classes of Poland?
asked on June 9, 2011 
meaning of a word(quick) thanks
Left unabated, obesity will surpass smoking as the leading cause of preventable death in America What is a another word for surpass
asked on May 18, 2011 
calculus
How do I integrate tanx (1+sec^4 x)^3/2 dx My daughter is doing surface area problems, and all the examples assume she knows how to finish it off once we get to the integration....
asked on February 25, 2011 
SIMPLE INTEREST
In how much time would the simple interest on a certain sum be 0.125 times the principle at 10% per annum?
asked on February 8, 2016 
SIMPLE INTEREST
In what time will ₹1200 amount to ₹1344 at 6% per annum?
asked on February 8, 2016 
English please help!!!!!
In the book The Pearl By John Steinbeck. The rich and powerful usually dominate the poor and uneducated. In the book who was rich?who did they dominate? Please give me alot of information
asked on October 4, 2011 
confederation college
1.52 kg box slides 1.24 m a long a level surface.the coefficient of kinetic friction between book and surface is 0.140.find the work done by friction?
asked on April 11, 2013 
Social Studies please help
why did many native born americans in the late 1800 were in favor of restricting immigration?
asked on October 3, 2011 
math
A boy reaches his school 1.4km away in 1hr 40mins at what speed does he travels?
asked on July 13, 2016 
physics
A particle moves in a straight line with an acceleration a ms^2 at time 't' seconds where a =  1/t² when t=1 the particle has a velocity of 3ms^1 then find the velocity when t=4
asked on August 19, 2014 
maths
1. Log10²x+log10x²=log10² 21 2. Log4(log2x)+log2(log4x)=2 3. X^logx+5/3= 10^5+log x 4. Log 1/2(x1)+ log 1/2(x+1)log1/√2(7x)=1
asked on June 26, 2014 
physics
1.∫ x³(x+1)dx 2.∫ (1cot²x)dx 3.∫ cosx(tan x + sec x) dx 4.∫ dx/√5x+8 using u= 5x+8 and using u= √5x+5
asked on June 20, 2014 
physics
1.∫ csc (uπ/2) cot (uπ/2) du. 2.∫ sec^2(3x+2)ds 3.∫ √32s ds 4. ∫ 12(y^4+y4y^2+1)^2 (4^3+2y) dy use u= y^4+4y^2+1
asked on June 19, 2014 
ineering mechanics
IF THE COEFFICIENT OF ROLLING RESISTENCE OF A CYLINDER OF RADIUS R=1FT ROLL FROM UNIFORM VELOCITY?
asked on June 16, 2014 
physics
A 45.0 kg object is moving with a velocity of 17 m/s. How long must a 25.0 N force act on the object to bring it to a complete stop
asked on January 26, 2012 
science please help
a person touches a hot stove with her hand and quickly pulls it away in pain. Identify which three organs systems the body utilized in this reaction and explain the role each organ system played.
asked on October 1, 2011 
math
what are the rules to adding and subtracting negative numbers and positive numbers?
asked on September 13, 2011 
math
Find three consecutive numbers such that the sum of the second and the third numbers exceeds the first by 14
asked on September 19, 2017 
Statstics
According to a survey by Topez Enterprises, a travel auditing company the avg error by travel agent is 128. suppose this figure was obtained from random sample of 41 travel agent & standard dervivation is 21. What is the point estimate of the national avg
asked on August 28, 2016 
Physics
Research on the physics of living systems.Give two examples to show how physics helps to understand the concepts of evolution, biological systems of living organisms.
asked on July 15, 2016 
Physics
A ball thrown vertically upward and return in20 seconds.find the velocity and the maximum height with explanation
asked on May 25, 2016 
SIMPLE INTEREST
A person borrows ₹5000 for 2 years at 4% p.a. simple interest. He lends to it to another person at 25/4%p.a. for 2 years. Find his gain in the transaction per year.
asked on February 8, 2016 
math
If the cost price (C.P.) of 6 articles is equal to the selling price (S.P.) of 4 articles find the gain percent.
asked on February 4, 2016 
math
The expression y=ax²+bx+c has always the same sign as of 'a' if:
asked on July 10, 2014 
maths
1.Log10(x²12x+36)=2 2.log4 log3 log2 x=0 3.log3 [log9x+1/2+9x]=2x 4.2log4(44)=4log2(2x)
asked on June 26, 2014 
physics
1)if y=e^x . cot x then dy/dx will be 2) f(x)=sin²xcos²x then the value of f' (π/4)
asked on June 20, 2014 
physics
1) y=4+5x + 7x³. Find dy/dx 2) if y= tan x cos²x then dy by dx will be
asked on June 20, 2014 
psy
Define cognitive bias and choose two that you may experience. Explain how you would use critical thinking to overcome cognitive bias to ensure academic success
asked on January 10, 2014 
physics
Use the Biot Savart law to compute the magnetic field at the center of a metallic ring. the ring has a radius of 10^6 m and is connected to two infinite wires. the current in the wires is 1 amp. the ring is lying in the [x,y,z= 0 ] plane. the first wire
asked on May 21, 2013 
math
what are the seconds in 19.8 degrees
asked on December 8, 2011 
Genetics
Given below is a pedigree in which the inheritance of an autosomal dominant disease gene is being followed. Linked to the disease gene (3 cM = 3% recombination away) is a RFLP marker with 2 alleles (5 kb and 3 kb). Given the DNA marker compositions for
asked on October 10, 2011 
HELP!!!!
why do we celebrate hispanic heritage month
asked on October 10, 2011 
science
a person touches a hot stove with her hand and quickly pulls it away in pain. Identify which three organs systems the body utilized in this reaction and explain the role each organ system played.
asked on October 1, 2011 
Social Studies
how has the National Junior Tennis League Chapter impacted human lives?
asked on May 16, 2011 
math
A sum of ₹400 amounts to ₹480 in 4 years.What will it amount to, if the rate of interest is increased by 2%p.a.?
asked on February 7, 2016 
science
Calculate net force when mass =2000kg, uniform velocity =60kg/hr
asked on November 7, 2015 
physics
A particle moves according to the eqn a=kv where a is acceleration and v is the velocity and k is a constant. If initial speed is V0 find the speed at any instant
asked on August 19, 2014 
physics
1)if y=x³+2x²+7x+8 then dy by dx will be 2) if y= 1/x⁴ then, dy by dx will be: 3) if y = x² sin x, then dy/dx will be
asked on June 20, 2014 
physics
1)Y=x+x².+1/x+1/x³ find dy by dx 2)y=x²+1/x². Find dy by dx
asked on June 20, 2014 
Science
Hello. I have this question for my class. We were to mix Na2S2O3 to a a testtube with Varsol layer on top and an Aqueous layer (of I2/KI) on the bottom. I observed a lighter colour change in both layers. How would I express that as a chemical equation?
asked on March 9, 2014 
maths
A movie company wants to make movies featuring various monsters. They want each movie to have at least 2 different monsters and no two movies to have the exact same set of monsters. What is the minimum number of monsters the company must use in order to
asked on October 27, 2013 
Global History ( persians and assyria)
differences between Assyria empire and persian empire
asked on October 3, 2011 
Word meaning please
what is Hemophilia? please explain thanks
asked on September 13, 2011 
Math
what is the difference between an equation and an inequality. Also could you give me a example of each
asked on May 17, 2011 
Science
Can I have as much information about seals as possible please?
asked on January 25, 2011 
pre algebra
133p=5(3+2p)
asked on October 2, 2010 
7th grade math
25t=25t+5
asked on October 2, 2010 
social studies
please give me the pictures of grasslands and forest of different parts of world provided with the description about them ? For grasslands, start with http://www.blueplanetbiomes.org/grasslands.htm From there, click to web sites for the North American
asked on June 15, 2007

Math
35cm*45cm
posted on June 4, 2019 
Math
10P5*5=1260 1260*5/10=630 so 1260 possible teams, half will contain alex
posted on May 11, 2019 
Physics
Answer of this question
posted on December 9, 2018 
Physics
Correct answer is 4kw
posted on August 20, 2018 
math
7725
posted on September 27, 2016 
Math
If 50 meter of cloth costs rupe 3725 how much clothes can be bought for 80 metres.
posted on July 17, 2016 
AP chemistry
znco3+o2
posted on July 15, 2016 
physics
28 P and Q are two vectors; P+Q>or equal to R > or equal go PQ
posted on September 10, 2015 
Chemistry
C)
posted on May 5, 2015 
science
YES THE CHOICES ARE RIGHT
posted on April 16, 2015 
Physics
i don't know the answer but how 4 the man height varies
posted on February 13, 2015 
physics
Its physics
posted on June 19, 2014 
Chemistry
Kc = ([x]^2)/A 7.94*10^6 = ([x]^2)/2.70 M 2.1438*10^5 = x^2 x = 4.630118789*10^3 I hope this helps Janavi.
posted on April 5, 2014 
Chemistry
Initially: H2S = 0.28 H2(g) = 0 S(g) = 0 At equilibrium: H2S = 0.28  x H2(g) = x S(g) = x Kp = Products/Reactants = ([x][x])/(0.28x) x^2 +0.813x0.22764 = 0 x =(b plus or minus sqrt(b^2 4ac))/2a x = 0.220303199 or approximately 0.220 What is the total
posted on April 5, 2014 
Chemistry
All you have to do Step 1: Set the solids equal to 0 for G Step 2: Look up the gases (in this case just CO2) Step 3: Once you look up thr gasses add the delta g for each equation to each other. Step 4:Solve for Q using the Delta G= delta G not plus RTLnQ
posted on March 24, 2014 
Science
Also forgot to include: I2(aq) + I I3 (aq) = AQUEOUS LAYER I2(aq) I2 = VARSOL
posted on March 9, 2014 
Science
Sorry, my apologies. After adding Na2S2O3, the Varsol layer became colorless and there was no change in the Aqueous layer.
posted on March 9, 2014 
Math
The diameter of the balloon after 3 s is 8.64cm.
posted on February 15, 2014 
physics
The answer I get is 12.24 rad/s. Can anyone confirm this?
posted on December 12, 2012 
Global History ( persians and assyria)
and similarties THANK YOU
posted on October 3, 2011 
sciecnce (hypothesis)
ok thanks got it
posted on September 18, 2011 
sciecnce (hypothesis)
i need to do that experiment above is the hypothesis corrrect
posted on September 18, 2011 
meaning of a word(quick) thanks
beat out is a good word for surpass right
posted on May 18, 2011 
math
14,500x09=1,305.oox05=6525 the answer is $6,525.00
posted on February 24, 2010 
MATH
$14,500 loan at 9% interest for 5 years is525.00
posted on February 24, 2010 
math
a.5.30
posted on February 4, 2010 
math
b.3,219
posted on February 4, 2010 
math
b.3,219
posted on February 4, 2010 
math
a.$5.30
posted on February 4, 2010 
Maths  check answer
a.$5.30
posted on February 4, 2010 
Math
d.1.67%
posted on February 1, 2010