# Posts by YASH

Total # Posts: 47

**Maths **

By picking a natural number randomly upto 100, find the probability of the number being a perfect cube

*March 21, 2017*

**science**

an object of size 3cm is placed at a distance of 15cm from a convex lens of focal length 10cm calculate the distance and size of image so formed what will be nature of image?

*December 6, 2016*

**Science**

An aeroplane takes off from runway making an angle of 30 horizontally at a speed 500ms find the height attained by the aeroplane after 15s?

*July 8, 2016*

**Discrete math**

Consider the following theorem (p -> q): If the quadrilateral ABCD is a square, then its diagonals are perpendicular and have the same length. State the converse (q->p), inverse (~p -> ~q), and contrapositive (~q -> ~p). "->" is an arrow

*March 3, 2016*

**physics**

A pistol of mass 2kg fires a bullet of mass 50g. The bullet strikes a block of mass 0.5kg. If the block with bullet embedded in it moves with a velocity of 4m/s the recoil velocity of the gun will be..??

*August 28, 2015*

**Physics**

Two spheres A and B of equal mass are free to move on a smooth horizontal surface. A and B move towards each other with velocity vectors ai+bj and ci+dj r respectively and collide when the line joining their centres is parallel to i. After impact A and B have velocity vectors ...

*April 8, 2015*

**math**

i am number between 35 and 45 i am completely divisible by 13 find the number

*April 3, 2015*

**math**

i am number between 35 and 45 i am completeli divisible by 13 find the number

*April 2, 2015*

**chemistry**

2/3 mole

*July 7, 2014*

**buisness**

I want 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

*December 15, 2013*

**US History**

I made a 50/100 by using these answers. Useless

*August 28, 2013*

**science**

2 liters of water at 80.c is found into a plastic bucket containing 10 liters of water at 20.c what is the final temperature of water ( density of water 1kg/litre) (neglect the heat gained by bucket and specific heat capacity of water = 1cal/gm.c ?

*August 24, 2012*

**science**

I need help to prepare survey report on "use of mobiles are the need of an hour". Report should contain questions asked during survey, graphical representations etc.

*June 15, 2012*

**science**

I need help to prepare survey report on "use of mobiles are the need of an hour". Report should contain questions asked during survey, graphical representations etc.

*June 15, 2012*

**Math**

5x+3y=23.5 5x+ y=20 +2y=3.5 y=1.75 x=(23.5-3y)/5 x=(23.5-3*1.75)/5 x=18.25

*December 1, 2011*

**Choudhary**

An open knife edge of mass 200g is dropped from hieght 5m on a cardboard. If the knife edge penetrates 2m into the cardboard, the average resistance offered by the cardboard to the knife

*September 21, 2011*

**thermodynamics**

Consider two closed systems A and B. System A contains 3000 kJ of thermal energy at 20°C, whereas system B contains 200 kJ of thermal energy at 50°C. Now the systems are brought into contact with each other. Determine the direction of any heat transfer between the two ...

*August 8, 2011*

**KENDRIYA VIDYALAYA, PHYSICS**

A PROJECTILE HAS SAME RANGE 'R' WHEN MAXIMUM HEIGHT ATTAINED BY IT IS EITHER 'H1' OR 'H2'.FIND THE RELATION BETWEEN,'R','H1','H2'.

*August 8, 2011*

**science 10**

u=22.2m/s a=-2.8m/s2 v=8.2m/s t=? v=u+at (equation) 8.2=22.2+(-2.8)t 8.2-22.2=-2.8t -14=-2.8t ('-' sign is cancelled from both the sides) 14/2.8=t 5=t hence time taken is 5 seconds

*August 8, 2011*

**biology**

The synovial fluid between two bones get dried up as the age increases and two bones start rubbing with each other.

*July 16, 2011*

**english**

from where i will get an essay on the topic "the complete development of students is only possible by strict discipline " write for or against the topic

*June 26, 2011*

**english**

where will i get the essay in about 500 words on "polluting the environment is dangerous for human existence",prove using present instances

*June 26, 2011*

**english**

i am not able to find a a poem on any inanimated thing like snow, chalk candle etc. in about 8-1o lines on net. poem should be of class 9th level can u help me please... regards yash sethia

*June 20, 2011*

**english**

a poem on any inanimated thing like snow, chalk candle etc. in about 8-1o lines poem should be of class 9th level

*June 18, 2011*

**maths**

a trapezium with its parallel sides in the ratio16:5,is cut from a rectangle whose sides measure 63m &5m respectively. the area of the trapezium is 4/15 of the rectangle .find the lengths of the parallel sides of the trapezium.

*June 3, 2011*

**maths**

the cross section of a canal is a trapezium in shape .if the canal is 10m wide at top ,6m wide at bottom & the area of the cross section is 72 sq m ,determine its depth

*June 2, 2011*

**maths**

a trapezium with its parallel sides in the ratio16:5,is cut from a rectangle whose sides measure 63m &5m respectively. the area of the trapezium is 4/15 of the rectangle .find the lengths of the parallel sides of the trapezium.

*June 2, 2011*

**SCIENCE(PHYSICS)**

a train is moving on a straight track n travels at a speed of72km/hr and passes a pole in 3 seconds. find the time taken by the train to pass the bridge of length of 540 m? Sir in the solution i understood why we will get27 sec. but why we will add 3 sec?

*May 27, 2011*

**SCIENCE(PHYSICS)**

a train is moving on a straight track n travels at a speed of72km/hr and passes a pole in 3 seconds. find the time taken by the train to pass the bridge of length of 540 m?

*May 27, 2011*

**SCIENCE(chemistry)**

SIR BUT THIS IS ONLY PROVIDED IN THE QUESTION &I HAVE TO COMPLETE IT. (DRAW A TEMPERATURE TIME PLOT FOR ICE -STEAM TRANSFORMATION.)

*May 25, 2011*

**SCIENCE(PHYSICS)**

A train travels 40 km/hr for 0.2 hr, 50km/hr for next 0.2hr and 60km/hr for next 0.4 hr.calculate the average speed of train. My Solution:-1st hr. distance=40 multiplied by 0.2=8km 2nd hr.= 50 multiplied by 0.2=10km 3rd hr. =60 multiplied by 0.4=24 km Average speed=10+24+8 ...

*May 25, 2011*

**SCIENCE(chemistry)**

DRAW A TEMPERATURE TIME PLOT FOR ICE -STEAM TRANSFORMATION. PLEASE DRAW THE PLOT AS I WAS NOT ABLE TO DRAW IT.

*May 23, 2011*

**SCIENCE(PHYSICS)**

A TRAIN IS MOVING ON A STRAIGHT TRCK AND TRAVELS AT A SPEED OF 72KM/HR AND PASSES A POLE IN 3 SECONDS. FIND THE TIME TAKEN TO PASS A BRIDGE OF LENGTH 540m. PLEASE SOLVE THE QUESTION AND ANSWER IT AS I WAS NOT ABLE TO ANSWER IT.

*May 23, 2011*

**SCIENCE(PHYSICS)**

A train travels 40 km/hr for 0.2 hr, 50km/hr for next 0.2hr and 60km/hr for next 0.4 hr.calculate the average speed of train. PLEASE SOLVE THE QUESTION WITH ANSWER AS I WAS NOT ABLE TO GET THE ANSWER

*May 23, 2011*

**SCIENCE(biology)**

define sustainable agriculture

*May 22, 2011*

**SCIENCE(chemistry)**

draw a temperature time plot for ice-steam transformation

*May 22, 2011*

**SCIENCE(PHYSICS)**

A TRAIN IS MOVING ON A STRAIGHT TRCK AND TRAVELS AT A SPEED OF 72KM/HR AND PASSES A POLE BIN 3 SECONDS. FIND THE TJME TAKEN TO PASS A BRIDGE OF LENGTH 540m

*May 22, 2011*

**SCIENCE(PHYSICS)**

A train travels 40 km/hr for 0.2 hr, 50km/hr for next 0.2hr and 60km/hr for next 0.4 hr.calculate the average speed of train

*May 22, 2011*

**physics**

i cant understand your question

*May 22, 2011*

**economics**

Suppose a monopolist faces production function Q = 3KL and demand function Q = 12 − P. Derive the input demand (as a function of Q, r and w) for capital and labor.

*March 31, 2011*

**geometry**

Prove that all altitudes of a rhombus are conqruent

*March 4, 2011*

**physics**

activity to demonstrate the fact that for a metallic wire of uniform material density and thickness, the resistance increases directly with its length.

*January 30, 2011*

**chemistry**

identification between copper sulphate & zinc sulphate

*June 8, 2010*

**chemistry**

The balanced chemical equation for reaction of Ba(OH) and HCl is as follows: Ba(OH) + 2HCl BaCl + 2H O 1 mole Ba(OH) produce 2 moles OH ions. Number of moles of OH ion in solution = concentration of Ba(OH) x volume of Ba(OH) = 0.1 mol L x 0.03 L x 2 = 0.006 mol Number of moles...

*March 7, 2010*

**English**

I could invent a new toy

*November 19, 2008*

**History**

rampurva bull capital

*May 23, 2006*

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