# Posts by yash

Total # Posts: 50

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?

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.

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

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?

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?

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

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..??

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 ...

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

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

chemistry
2/3 mole

math
20% loss

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

US History

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 ?

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.

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.

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

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

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 ...

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'.

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

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

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

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

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

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

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.

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

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.

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?

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?

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.)

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 ...

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

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.

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

SCIENCE(biology)
define sustainable agriculture

SCIENCE(chemistry)
draw a temperature time plot for ice-steam transformation

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

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

physics

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.

geometry
Prove that all altitudes of a rhombus are conqruent

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

chemistry
identification between copper sulphate & zinc sulphate

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...

English
I could invent a new toy

History
rampurva bull capital