# Posts by Rahul

Total # Posts: 156

**math**

ice in a refrigerator melts at rate of 3 kg per hour. the temperature outside is 27°c. find the minimum power output of a motor used to drive the refrigerator,which just prevents ice from melting. latent heat of ice = 80 cal/g,J=4.2 joule/cal, 1 h.p = 746 w

**Biology**

N

**Physics**

Find the distance of the image when an object is placed on the principal axis at a distance of 10 cm. In front of concave mirror whose radius of curvature is 8 cm

**Math**

a swimming pool is 40m long 25m wide 6m deep find a cost of cementing of its floor and walls at the rates of ?135 square per meter

**math**

In an election there were 2 candidates the winner poled 53% votes and won by 9600 votes find total number of votes

**Science**

A craane lifts an 8000N height 75m to the top of a buildings in 30s. How much power does the crane use?

**Math**

1408 cm²

**Math**

A rectangular strip 25cm*7cm is rotated about the longer side. find the total surface area of the solid thus generated.

**dp**

What is the pressure due to a man weighing 80 kg standing on his feet? Area of his feet 160 Sq. Cm

**Geometric progression**

Sir it is last question after that no post any question

**Geometric progression**

If the fifth term of a G.P. Is 81 and second term is 24, find the g.p. Sir this question answer 16,24,36,54 please help

**Accountany**

What is legacy

**Math**

n2-15n+100

**Geometric progression**

I don't know sir please help me

**Geometric progression**

If the continued product of three numbers in G.P. is 216 and the sum of their products in pair is 156. Find the numbers.

**Geometric progression**

Three numbers whose sum is 15 are in A.P. If 1,4,19 be added to them respectively the resulting number are in G.P find

**Geometric progression**

Express 0.54 as a rational number. sir this question answer is 6/11

**Geometric progression**

Fourth term of a G.P. is 40 and the tenth term is 2560. find the seventh term.

**Geometric progression**

If 5th and 8th terms of a G.P. be 48 and 384 respectively. find the G.P.

**Geometric progression**

The first term of a G.P. Is 5 and the common ratio is-2. What is the 6th term?

**Geometric progression**

Fin the sum of the series 1+2+4+8+....to 12 terms.

**Geometric progression**

Find the sum of the series 4+44+444+....to n terms.

**Geometric progression**

Find the sum of the series 0.5+0.55+0.555+....to n terms.

**Geometric progression**

Find the sum of 8 terms of the G.P. 3,6,12,24,..... .

**Geometric progresson**

If a be the first term, b the nth term and p the product of n terms of G.P.,show that p2=(ab)n.

**Geometric progression**

The sum of n terms of a series is a.2n-b, find its nth term. are the terms of this series in G.P. ?

**Geometric progression**

Find the nth term and the sum to n terms of the series: 1+(1+2)+(1+2+2>2)+.....

**Geometric progression**

Find the sum of the geometric series 1+1/2+1/4+1/8+.....to 12th terms.

**Geometric progression**

Find the sum of series: 1+3x+9x2+27x3+...to

**Geometric progression**

First term and the sum of an infinite G.P. are 2 and 3 respectively. find the common ratio and sum upto n term.

**Geometric progression**

Find the sum upto infinite: 2/5+3/5>2+2/5>3+3/5>4+2/5>5+3/5>6+.....

**Geometric progression**

The first term of an infinite geometric progression is 1 and the sum of the terms is 13, find common ratio.

**Geometric progression**

The sum of infinite number of terms of a decreasing G.P is 4 and the sum of the squares of its terms to infinity is 1/3

**Geometric progression**

The sum of an infinite g.p. whose common ratio is numerically less the 1 is 32 and sum of the first two is 24.

**Geometric progression**

Find the sum to the n terms: 5+55+555+.......

**Math**

Express 0.54 as a rational number.

**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)

**Math**

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

**science**

all acids are not corrosive.justify this statement

**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?

**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 ?

**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

**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

**Maths**

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

**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 ...

**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

**Science**

Expression for bernaulli theorem

**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

**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.

**Algebra**

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

**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

**geometry**

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

**dps dhanbad**

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

**dps dhanbad**

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

**KCC**

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

**physics**

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

**English**

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

**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?

**math**

sin

**Physical Chemistry**

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

**Physical Chemistry**

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

**chemistry**

are bhai answer Kya hai??????

**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.

**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

**s.p s**

How we can write 26th December 2014 in five letters

**physics**

Define Newton's first law .

**physics**

Newton first law provides the measure of ???

**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

**Maths**

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

**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 ...

**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

**statistics**

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

**physics**

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

**Math**

Sin square 5 degree plus Sin square 10 degree plus Sin square 15 degree plus..........Sin square 90 degree

**math**

Question 2Sin50'cos60' answer sin110'-sin10'

**math**

Question Sin120-sin40=2cos80.sin40. Sidhd karo

**math**

Sin120-sin40=2cos80.sin40. Sidhd karo

**logical thinking**

Monica has eleven children and eleven apples. She wants to divide equal pieces of apples so that Apple is still left out.

**Marry gold english 2**

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

**algebra**

Monika had 5 boxes of chocolates with her. If each box contains 25 chocolates. find the total chocolates she had.

**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 ...

**physics**

5 × 10ooo

**chemistry**

identify the type of reaction:- FeSO4 + heat ----------> Fe2O3 + SO2 + SO3

**physics**

0. 61

**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?

**maths**

how to write 04 feb 2014 in 5 letters without using numbers.

**science**

Extraction of copper

**physics**

Find an expression for the energy densityin terms of stress and strain.

**physics**

Is average speed the magnitude of average velocity?

**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 ...

**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

**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 ...

**Pre Calculus**

2tanx

**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/...

**Physics Urgent please help**

f+0.63

**Mathematics**

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

**science**

Because the others require a medium in order to transmit and receive the signals from outer space

**math**

50

**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)

**physics**

i don't know