# yash

Most popular questions and responses by yash
1. ## 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

2. ## Math

A ribbon is 3metres long.I need 8pieces of ribbon each 40cm long.How many centimetres shorter is the ribbon than the length I need?

3. ## 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'.

4. ## math

the cost of carpeting a room 12 m wide with a carpet of width 85 cm at the rate Rs 120 is Rs 28800. find the length of the room.

5. ## 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

6. ## 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..??

7. ## 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.

8. ## 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

9. ## 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.

10. ## SCIENCE(chemistry)

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

11. ## SCIENCE(chemistry)

draw a temperature time plot for ice-steam transformation

12. ## 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

13. ## 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 ?

14. ## 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

15. ## 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.

16. ## 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

17. ## 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

18. ## geometry

Prove that all altitudes of a rhombus are conqruent

19. ## physics

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

20. ## History

rampurva bull capital

21. ## 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?

22. ## 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.

23. ## 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

24. ## 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?

25. ## 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?

26. ## chemistry

identification between copper sulphate & zinc sulphate

27. ## Math

While going downstream boat covers a distance in 48km in 6hrs while returning covering the same distance in a task. find the speed of boat and that of river.

28. ## Maths

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

29. ## 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?

30. ## 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

31. ## 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

32. ## 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.

33. ## SCIENCE(biology)

define sustainable agriculture

34. ## Math

A ribbon is 3metres long.Can we cut it into 5ocm pieces and have nothing left over?Write the reason why or why not.

35. ## math

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

36. ## 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

37. ## english

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

38. ## english

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

39. ## 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.)

40. ## 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.

41. ## 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

1. ## math

20% loss

posted on November 17, 2017
2. ## biology

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

posted on February 10, 2017
3. ## science

I could invent a new toy

posted on September 23, 2016
4. ## Mechanics

20

posted on August 3, 2016
5. ## 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 =

posted on April 16, 2016
6. ## math

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

posted on April 3, 2015
7. ## chemistry

2/3 mole

posted on December 21, 2014
8. ## US History

posted on September 13, 2014
9. ## 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

posted on December 1, 2011
10. ## 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

posted on August 8, 2011