Saturday

October 1, 2016
Total # Posts: 113

**Science**

500g of water at 100°c is mixed with 300g of water at 20°c.specific heat capacity of water is 4.2Jg°c.find the final temperature of mixture. (Physics)

*September 5, 2016*

**Math**

Show that of all the rectangle inscribed in a given circle,the square has the max area

*July 25, 2016*

**science**

all acids are not corrosive.justify this statement

*July 18, 2016*

**chemistry**

Henry's law constant for N2 and O2 is 1.6 *10^-6and 8.77*10^-7 molal/mm Hg at 298k.Air has 78 mole percentage N2 and 21 mole percentage O2.at atmospheric pressure the ratio of solubility of N2 and O2 in water is?

*May 10, 2016*

**Average**

In a class 20% students failed 60% students scored average marks and the remaining above average marks find number of students in the class ?

*May 6, 2016*

**Rt**

if a boy present age is 7 yr & his uncle present age is 31 after how many yr his uncle age was twice of his boy age

*April 30, 2016*

**mathematics **

Find the angle of depression of a boat from the bridge at a horizontal distance of 25 m from the bridge if the height of the bridge is 25 m

*March 20, 2016*

**Maths**

Find the volume of a cuboid whose base area is 10metercube and height is 6meter

*March 9, 2016*

**Physics**

The near point of a patient's eye is 58.2 cm. (a) What should be the refractive power ℛ of a corrective lens prescribed to enable the patient to clearly see an object at 22.0 cm? ℛ = dpt (b) When using the new corrective glasses, the patient can see an object ...

*March 4, 2016*

**Physics**

A person can see an object in focus only if the object is no farther than 35 cm from the right eye and 58 cm from the left eye. Write a prescription for the refractive powers ℛ (in diopters) for the person's corrective lenses. right eye dpt left eye dpt

*March 4, 2016*

**Science**

Expression for bernaulli theorem

*February 21, 2016*

**math**

If P (x, y) is a point on da line segment joining da points A(6,8) & B(-8, 6) prove that x+y=2

*February 18, 2016*

**Spelling**

Crazy glue is more cohesive than regular Elmer's glue. I have a very cohesive group of coworkers that help to reach our goals.

*February 9, 2016*

**Algebra**

is (x^2-a^2) the same as (x-a)^2. If so would (x^2-a^2)/x-a = x-a?

*February 9, 2016*

**Physics**

find the angle of banking of curved railway track of radius 600m if the maximum saftey sppedd limit is 54;km/hr .if distance beetween the rails is 1.6m find elevation ofvthe outervtrack above the inner track

*January 29, 2016*

**geometry**

if a circle is divided into 12 parts then what is the measure of each part in terms of radius

*January 9, 2016*

**dps dhanbad**

subject: math. distance=8m,speed=42/5centi/sec,time=?

*November 30, 2015*

**dps dhanbad**

distance=8m,speed=42/5centimeter/sec,time=?

*November 30, 2015*

**KCC**

An electron has a speed of 500 m/Sec with uncertainty of 0.002% what is the uncertainty in position?

*October 14, 2015*

**physics**

which type of forces does a proton exerts on a proton inside nucleus? my answer-repulsion force

*August 15, 2015*

**English**

If they or someone nearby had only known the simple rules of water safety. How to make a question of this passage?

*June 6, 2015*

**physics**

car moving on a straight road covers a distance of 1.5 km due east in 150 second.what is the speed of the car?what is it's velocity?

*June 1, 2015*

**math**

sin

*May 10, 2015*

**Physical Chemistry**

The weight of one atom of uranium is 238amu. Its actual weight is ......g.

*April 21, 2015*

**Physical Chemistry**

The weight of one atom of uranium is 238amu. Its actual weight is ......g.

*April 20, 2015*

**Theory of machines**

A locomotive is running at a constant speed of 100 km/ h. The diameter of driving wheels is 1.8 m. The stroke of the piston of the steam engine cylinder of the locomotive is 600 mm. Find the centripetal acceleration of the crank pin relative to the engine frame.

*January 18, 2015*

**Mathematics**

A cylindrical tube, open at both ends, is made of metal. The internal diameter of the tube is 10.4cm and its height is 25 cm. If thickness of the metal is 8mm everywhere, calculatd the volume of metal in the cylinder

*January 4, 2015*

**s.p s**

How we can write 26th December 2014 in five letters

*December 26, 2014*

**physics**

Define Newton's first law .

*December 7, 2014*

**physics**

Newton first law provides the measure of ???

*December 7, 2014*

**math**

find twonumbers such that the sum of twice the first and thric the second is 92 and four times the exceeds seven times the second by 2

*November 27, 2014*

**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*

**Marry gold english 2**

The Child in the poem think about his drawing will be as good as thiers.

*June 22, 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*

**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*

**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*

**financial accounting**

144

*May 5, 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*