Friday
October 31, 2014

Posts by rahul


Total # Posts: 78

Maths
Show that if the diagonals of a quadrilateral bisect each other at right angles, then it is a rhombus.
October 28, 2014

physics
Two identical small marbles A and B can be seen. A is at rest while B moves towards A at uniform velocity. The track is smooth towards left of P while it offers a resistance of 0.1 m/s2 towards its right. After some time, the marbles are seen at rest 25cms apart. After ...
September 20, 2014

Physics
v^2 - u^2 = 2as v^2 = 2(9.8)(2) + 35^2 v^2 = 39.2 + 1225 v^2 = 1264.2 v = 35.5
September 20, 2014

statistics
a study was conducted of all 1849 students in a certain country.whether the value is parameter or statistics
September 20, 2014

physics
if a electricity genreter move with the speed of 60km/h how much electricity they generate in 1 minute in volt
September 8, 2014

Math
Sin square 5 degree plus Sin square 10 degree plus Sin square 15 degree plus..........Sin square 90 degree
August 4, 2014

math
Question 2Sin50'cos60' answer sin110'-sin10'
July 31, 2014

math
Question Sin120-sin40=2cos80.sin40. Sidhd karo
July 31, 2014

math
Sin120-sin40=2cos80.sin40. Sidhd karo
July 31, 2014

logical thinking
Monica has eleven children and eleven apples. She wants to divide equal pieces of apples so that Apple is still left out.
July 23, 2014

algebra
Monika had 5 boxes of chocolates with her. If each box contains 25 chocolates. find the total chocolates she had.
June 22, 2014

Physics
Consider problem U concerning the geosynchronous satellite of mass 50 kg. It orbits at a radius of 42,300 km with a speed of 3076 m/s. a) How much energy is needed to lift the satellite from the earth's surface (Re=6,370 km) up to that radius? b) How much kinetic energy ...
June 17, 2014

chemistry
identify the type of reaction:- FeSO4 + heat ----------> Fe2O3 + SO2 + SO3
May 26, 2014

physics
Three tug boats are pulling on a cruise ship with three ropes. Two pull with a force of 1800 N each at angle of [N15°E] and [S24°E]. If the net force on the ship is zero, what must the tension in the third rope be?
April 23, 2014

maths
how to write 04 feb 2014 in 5 letters without using numbers.
February 4, 2014

science
Extraction of copper
February 2, 2014

physics
Find an expression for the energy densityin terms of stress and strain.
January 2, 2014

physics
Is average speed the magnitude of average velocity?
January 2, 2014

buisness
I need help on a project on 'case study on soft drinks' of about 30 pages which should include information abou history,nature of soft drinks, process of manufacturing and a casestudy on a particular softdrink brand. Please provide some websites where i can get ...
December 15, 2013

buisness
I need help in a project on 'case study on soft drinks' of about 30 pages . Please provide some websites details which can help me. It should include information abou history,nature of soft drinks, process of manufacturing and a casestudy on a particular softdrink brand
December 15, 2013

accounts
I need help in a project on 'accounting process' . It should begin with a storyline in which a buisness have to be chosen(i have chosen a tyres dealer). Then transactions taking place between 1 april 2013 to 30 june 2013(accounting period is 3 months). It should ...
December 15, 2013

Pre Calculus
2tanx
December 14, 2013

mathematics
The members of a high school basketball team are driving from calgary to vancouver,which is a distance of 675km.Each tire of their van has a radius of 32cm.If the team members drive at constant speed and cover the distance in 6h 45 min,what is the angular velocity,in radians/...
November 12, 2013

Physics Urgent please help
f+0.63
October 15, 2013

Mathematics
In a family of two children, find the probability that the family has two boys given that the first child is a boy.
August 23, 2013

science
Because the others require a medium in order to transmit and recieve the signals from outer space
August 3, 2013

math
50
June 17, 2013

chemistry
calculate the freezing point of an aqueous solution containing 10.50 g of MgBr2 in 200 g of water (MgBr2=184 g, Kf for water =1.80 K kg mol-1)
June 12, 2013

physics
i don't know
June 11, 2013

physics numeral
A person rows his boat in stream with a speed of 2.0 m/s.Water in the stream is flowing perpendicular to the direction of flow,find graphically his resultant velocity.
June 7, 2013

physics numeral
An object of mass of 0.5 kg is whirled at the end of a string 0.8 m long.If the string makes three revolutions in 1.2 s,find the tension in the string.
June 7, 2013

Capacitors
(a) i)0 ii)0 iii)Q(t) = 3 * Q_0 and E = Q(t)/(A * epsilon_0) ....where A = pi*a^2 (b) i)0 ii)don't know iii)0 (c) i)don't know ii)0 iii)0 (d) i)don't know (e) i)don't know
May 24, 2013

chemistry
cao + h20
April 27, 2013

MAnagerial Economics
In the long Run Who play a dominant role. Options:- Income, Demand, Supply, Price.
April 23, 2013

math
12x + 16y=1/5 & 13x + 24y =1/4,find value of x & y.
April 7, 2013

Probability
17
March 12, 2013

trig
sec0+ten0-1/tan0+sec0+1=1+sin0/cos0
February 24, 2013

geometry
a rectangle PQRS inscribed in a quadrant of circle of radius 13cm. find area of rectangle.
February 7, 2013

Science
unit of mass is kg whereas unit of force is newton or kg wt mass always remain constant except in rocket propulsion whereas wt varies from place to place as g acc due to gravity varies
November 21, 2012

maths
If f(x)=x(2pi-x) in 0<x<2pi,prove tat f(x)=2pi square/3-4(cosx/1square+cos2x/(2 square)+cos3x/(3 square)+.....
September 9, 2012

English 3
What are the different kinds of mindset?
July 24, 2012

physics
A spacecraft circling the moon at a distance of 384,000 km from the earth communicates by radio with a person on earth. How much time elapses between the sending and receiving of a signal?
April 2, 2012

algebra
3 4 1 2 find the value of the following determinant
February 3, 2012

math
to find the force...you just subtract the two weights?
October 29, 2011

math
1. Two children balance a see-saw in horizontal equilibrium. One weighs 80 lb. and the other weighs 60 lb. and is sitting 4ft. from the fulcrum. Find the force the fulcrum applies to the beam and the distance to the fulcrum to the 80 lb. child. (Neglect the mass of the see-saw)
October 29, 2011

physics
what is net force acting on the ball after attaning terminal velosity?
October 19, 2011

Science
The time taken by the tip of second hand of a clock to move one full round on circular dial is 60 second. The speed of second hand is _____.
September 26, 2011

Science
The time taken by the tip of second hand of a clock to move one full round on circular dial is 60 second. The speed of second hand is _____.
September 26, 2011

AP Chemistry
What mass of Na2CrO4 is required to precipitate all the silver ions from 96.0 mL of a 0.650 M solution of AgNO3?
September 24, 2011

AP Chemistry
Write the balanced molecular, complete ionic, and net ionic equations for each of the following acid-base reactions. (Type your answer using the format [NH4]+ for NH4+ and [Ni(CN)4]2- for Ni(CN)42-. Use the lowest possible coefficients.) (a) HClO4(aq) + Mg(OH)2(s) molecular ...
September 24, 2011

AP Chemistry
Write the balanced molecular, complete ionic, and net ionic equations for the reactions that occur when the following are mixed. (Type your answer using the format [NH4]+ for NH4+ and [Ni(CN)4]2- for Ni(CN)42-. Use the lowest possible coefficients.) (a) solid silver hydroxide ...
September 24, 2011

AP Chemistry
What volume of each of the following acids will react completely with 25.50 mL of 0.700 M NaOH? (a) 0.100 M HCl (b) 0.150 M HNO3 (c) 0.200 M HC2H3O2
September 24, 2011

AP Chemistry
What volume of each of the following bases will react completely with 21.00 mL of 0.500 M HCl? (a) 0.100 M NaOH (b) 0.0500 M Ba(OH)2 (c) 0.250 M KOH
September 24, 2011

math
27*18=486
September 14, 2011

chemistry
how many moles of methane are required to produce 22g of CO2 after combustion
July 24, 2011

chemistry
When water is cooled to a temperature x , it gets converted into ice at temperature x by a process called p. And when ice at temperature x is warmed, it gets converted into water at the same temperature x in a process called Q a) what is the value of temperature x in kelvin? b...
June 11, 2011

physics
A boy hits a football high up in the air . He runs and catches the football before it hits the ground. Which of the two , the boyor the football has had the greater diplacement?
May 31, 2011

english
poem of nature thha have mataphor,simile,persinofi
April 10, 2011

General knowlegde
How to write 23th march 2011 in 5 letter without using number
March 23, 2011

Please proof read using commas
I use a computer for producing final drafts but I can't actually write on it. I turn it on listen to it boot up put my fingers on the keyboard and the.....nothing. On the other hand writing on paper makes me feel as if I can conquer the whole world. When I see the ink on ...
March 7, 2011

science
My son has a science project to do on "Does a plant groww bigger if watered with milk or water?. Please if you can help how to get started
March 7, 2011

Physics
Hello, I am doing a physics experiment regarding rotational motion and equilibrium. We have the following lab setup and are supposed to find the unknown mass. How should I approach this? file:///C:/Users/Rahul/Desktop/Lab%20Drawing.jpg
February 9, 2011

Calculus AB
The volume V or a cone (V = 1/3 π r² h) is increasing at a rate of 28π cubic units per second. At the instant when the radius r of the cone is 3 units, its volume is 12π cubic units and the radius is increasing at 0.5 unit per second. a) At the instant ...
December 11, 2010

Physics
A light string, connects blocks 1 and 2 of masses m1 and m2. These blocks are further connected to a block of mass M by another light string that passes over a pulley of negligible mass and friction. Blocks 1 and 2 move with a constant velocity v down the inclined plane, which...
December 9, 2010

Physics
Thanx! thats what i got, other than the fact that we had a 5 foot difference with the rope already so the total should be 35 m after 2 secs.
December 9, 2010

Physics
Hi I really need this question answer as a check: a helicopter holding a 70 kilogram package suspended from a rope 5.0 meters long accelerates upward at a rate of 5.2 m/s^2. a. Determine tension on the rope. b. When the upward velocity of the helicopter is 30 meters per second...
December 9, 2010

Trigonometry
the answer is = 2/cosØ , L.H.S = R.H.D
November 17, 2010

Trigonometry
i mean to say 1/sinØ-tanØ - 1/cosØ = 1/cosØ + 1/secØ + tanØ
November 17, 2010

Trigonometry
Prove that 1/sin theta-tan theta and - 1/cos theta = 1/cos theta and + 1/sec theta+tan theta
November 17, 2010

physics
20.65 when car moves on a straight road the limiting force of friction should be greater than or equal to centripetal force i.e v=sq.root of meu r g
September 30, 2010

maths
express each of the following in the form (x+p)^2+q 1. x^2-20x+3
October 14, 2009

Math
Answer 0
July 1, 2009

8th grade MATH
3 tarm 8th quesaons
March 25, 2009

math
x=(-1)
June 13, 2007

science
What is on pulsars and pulsar planets. Using this information, describe what you might encounter on your space mission. Thank you for using the Jiskha Homework Help forum. Rather than my posting an entire page of sites, please go to the following, which I found with a Google ...
May 15, 2007

Gauss' Law!!!!!!!!!!
105.18
February 14, 2007

chemistry
l.hbjl.
January 5, 2007

computer
How to write a report on topic 'Internet'? Suggest report outline Thank you for using the Jiskha Homework Help Forum. Here are some things to consider in writing a typical five-paragraph paper. Five-Paragraph Essay Structure The introductory paragraph begins with a ...
June 16, 2006

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