Karan

Most popular questions and responses by Karan
1. 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

2. 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?

3. 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

4. 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]

5. 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?

6. 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

7. 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

8. physics

1.∫ x³(x+1)dx 2.∫ (1-cot²x)dx 3.∫ cosx(tan x + sec x) dx 4.∫ dx/√5x+8 using u= 5x+8 and using u= √5x+5

9. 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

10. geometry

find k if one of the lines given by kx^2+10xy+8y^2=0 is perpendicular to 2x-y=5

11. 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.

12. 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

13. science

The velocity of sound in air at 27°celcius is 340m/s calculate the velocity of sound in air at 227°celcius ?

14. 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

15. SIMPLE INTEREST

The rum of money that will produce ₹1770 as simple interest in 15/2 years as 8% at per annum is.

16. SIMPLE INTEREST

if ₹250 amounts to ₹285 in 2 years, find the rate percent per annum.

17. geometry

the length of the median drawn to the hypotenuse of a right triangle is represented by 3x-7, while the hypotenuse is represented by 5x-4. Find the length of the median.

18. 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

19. 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

20. Physics

Research on the physics of living systems.Give two examples to show how physics

21. maths

ABC is a triangle BD & CE are altitudes drawn from the vertex B & C. Prove that ABC is an isoceles triangle

22. Social Studies

What are the social classes of Poland?

23. 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

24. 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....

25. SIMPLE INTEREST

In how much time would the simple interest on a certain sum be 0.125 times the principle at 10% per annum?

26. SIMPLE INTEREST

In what time will ₹1200 amount to ₹1344 at 6% per annum?

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

28. confederation college

1.52 kg box slides 1.24 m a long a level surface.the co-efficient of kinetic friction between book and surface is 0.140.find the work done by friction?

why did many native born americans in the late 1800 were in favor of restricting immigration?

30. math

A boy reaches his school 1.4km away in 1hr 40mins at what speed does he travels?

31. 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

32. maths

1. Log10²x+log10x²=log10² 2-1 2. Log4(log2x)+log2(log4x)=2 3. X^logx+5/3= 10^5+log x 4. Log 1/2(x-1)+ log 1/2(x+1)-log1/√2(7-x)=1

33. physics

1.∫ x³(x+1)dx 2.∫ (1-cot²x)dx 3.∫ cosx(tan x + sec x) dx 4.∫ dx/√5x+8 using u= 5x+8 and using u= √5x+5

34. physics

1.∫ csc (u-π/2) cot (u-π/2) du. 2.∫ sec^2(3x+2)ds 3.∫ √3-2s ds 4. ∫ 12(y^4+y4y^2+1)^2 (4^3+2y) dy use u= y^4+4y^2+1

35. ineering mechanics

IF THE COEFFICIENT OF ROLLING RESISTENCE OF A CYLINDER OF RADIUS R=1FT ROLL FROM UNIFORM VELOCITY?

36. 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

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.

38. math

what are the rules to adding and subtracting negative numbers and positive numbers?

39. math

Find three consecutive numbers such that the sum of the second and the third numbers exceeds the first by 14

40. 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

41. 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.

42. Physics

A ball thrown vertically upward and return in20 seconds.find the velocity and the maximum height with explanation

43. 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.

44. 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.

45. math

The expression y=ax²+bx+c has always the same sign as of 'a' if:

46. maths

1.Log10(x²-12x+36)=2 2.log4 log3 log2 x=0 3.log3 [log9x+1/2+9x]=2x 4.2log4(4-4)=4-log2(-2-x)

47. physics

1)if y=e^x . cot x then dy/dx will be 2) f(x)=sin²x-cos²x then the value of f' (π/4)

48. physics

1) y=4+5x + 7x³. Find dy/dx 2) if y= tan x cos²x then dy by dx will be-

49. 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

50. 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

51. math

what are the seconds in 19.8 degrees

52. 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

53. HELP!!!!

why do we celebrate hispanic heritage month

54. 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.

55. Social Studies

how has the National Junior Tennis League Chapter impacted human lives?

56. 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.?

57. science

Calculate net force when mass =2000kg, uniform velocity =60kg/hr

58. 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

59. 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-

60. physics

1)Y=x+x².+1/x+1/x³ find dy by dx 2)y=x²+1/x². Find dy by dx

61. Science

Hello. I have this question for my class. We were to mix Na2S2O3 to a a test-tube 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?

62. 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

63. Global History ( persians and assyria)

differences between Assyria empire and persian empire

what is Hemophilia? please explain thanks

65. Math

what is the difference between an equation and an inequality. Also could you give me a example of each

67. pre algebra

13-3p=-5(3+2p)

25t=25t+5

69. 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

1. Math

35cm*45cm

posted on June 4, 2019
2. Math

10P5*5=1260 1260*5/10=630 so 1260 possible teams, half will contain alex

posted on May 11, 2019
3. Physics

posted on December 9, 2018
4. Physics

posted on August 20, 2018
5. math

7725

posted on September 27, 2016
6. Math

If 50 meter of cloth costs rupe 3725 how much clothes can be bought for 80 metres.

posted on July 17, 2016
7. AP chemistry

znco3+o2

posted on July 15, 2016
8. physics

28 P and Q are two vectors; P+Q>or equal to R > or equal go P-Q

posted on September 10, 2015
9. Chemistry

C)

posted on May 5, 2015
10. science

YES THE CHOICES ARE RIGHT

posted on April 16, 2015
11. Physics

i don't know the answer but how 4 the man height varies

posted on February 13, 2015
12. physics

Its physics

posted on June 19, 2014
13. 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
14. 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])/(0.28-x) x^2 +0.813x-0.22764 = 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
15. 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
16. Science

Also forgot to include: I2(aq) + I- I3- (aq) = AQUEOUS LAYER I2(aq) I2 = VARSOL

posted on March 9, 2014
17. 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
18. Math

The diameter of the balloon after 3 s is 8.64cm.

posted on February 15, 2014
19. physics

posted on December 12, 2012
20. Global History ( persians and assyria)

and similarties THANK YOU

posted on October 3, 2011
21. sciecnce (hypothesis)

ok thanks got it

posted on September 18, 2011
22. sciecnce (hypothesis)

i need to do that experiment above is the hypothesis corrrect

posted on September 18, 2011
23. meaning of a word(quick) thanks

beat out is a good word for surpass right

posted on May 18, 2011
24. math

posted on February 24, 2010
25. MATH

\$14,500 loan at 9% interest for 5 years is525.00

posted on February 24, 2010
26. math

a.5.30

posted on February 4, 2010
27. math

b.3,219

posted on February 4, 2010
28. math

b.3,219

posted on February 4, 2010
29. math

a.\$5.30

posted on February 4, 2010