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anil

Questions (35)

a committee consists of 7 people.In how many waya a president,secretary and treasurer can be chosen
1. 1 answer
2. 573 views
A carnot’s engine with air as working substance is initially at 3270C and pressure of 12 atmospheres. The volume is one litre
1. 1 answer
2. 857 views
the ratio of two number is 2:3 and their sum is 30 find the numbers
1. 3 answers
2. 475 views
A 4 meter long ladder weighing 25kg rest with its upper end against a smooth wall and lower end on rough ground. What should be
1. 0 answers
2. 709 views
sum of 1 to 198 odd positive intigers
1. 2 answers
2. 407 views
an open rectangular box has external dimensions as follows: 100cm long,90cm wide and 80cm deep if it is made from wood 2cm
1. 1 answer
2. 644 views
what wt. of hno3 is required to make 1lt. if 2N solution to be used as an oxidising agent3cu+8HNO3=3cuno3+2NO+4H2O
1. 1 answer
2. 509 views
will silver nitrate solution mixed with calcium sulfate solution produce white precipitation? Will it be because formation of
1. 1 answer
2. 1,517 views
4( x-2) metres of rope is used to fence this rectangular enclosure.Find x
1. 1 answer
2. 393 views
Two tugboats are towing a ship.Each exerts a force of 6000 N and the angle between two ropes is 60 degrees.What is the resultant
1. 8 answers
2. 3,774 views
Find the maximum and minimum values of the following function.8x3 – 75x2 + 150x
1. 0 answers
2. 568 views
What happens to the size of a hole in a metal plate when the plate is heated / cooled
1. 0 answers
2. 503 views
How do we compensate for thermal expansion /contraction in the construction of railway tracks?How do we compensate for thermal
1. 1 answer
2. 1,055 views
Describe briefly how the volume of a given mass of water changes when it is cooled from 7 ^0 C to 1^0 C use the terms increase,
1. 0 answers
2. 567 views
At what temperature is the density of water MAXIMUM ? Why does water have a maximum density ( Other liquids do not)
1. 0 answers
2. 396 views
A liquid expands on heating. Explain briefly how its density will change with rise in temperature
1. 0 answers
2. 523 views
liquids in general expand on heating but when water in an ordinary glass flask with a narrow neck is heated the level is found
1. 0 answers
2. 431 views
Name Two solid materials having very low linear expansivity ?
1. 0 answers
2. 685 views
Differentiate following with respect to x f(x) = (3x^2 – 5ax + a^2)^4
1. 1 answer
2. 1,039 views
What happens to the size of a hole in a metal plate when the plate is heated / cooled
1. 1 answer
2. 560 views
How do we compensate for thermal expansion /contraction in the construction of metal pipes for carrying steam?
1. 0 answers
2. 421 views
How do we compensate for thermal expansion /contraction in the construction of steel bridges?
1. 1 answer
2. 574 views
How do we compensate for thermal expansion /contraction in the construction of railway tracks?
1. 0 answers
2. 491 views
Describe briefly how the volume of a given mass of water changes when it is cooled from 7 ^0 C to 1^0 C use the terms increase,
1. 1 answer
2. 811 views
At what temperature is the density of water MAXIMUM ? Why does water have a maximum density ( Other liquids do not)
1. 1 answer
2. 418 views
A liquid expands on heating. Explain briefly how its density will change with rise in temperature
1. 0 answers
2. 443 views
Name Two solid materials having very low linear expansivity ?
1. 0 answers
2. 390 views
liquids in general expand on heating but when water in an ordinary glass flask with a narrow neck is heated the level is found
1. 1 answer
2. 524 views
Differentiate following with respect to x.(3x2 – 5ax + a2)4
1. 1 answer
2. 635 views
Differentiate following with respect to x.(3x2 – 5ax + a2)4
1. 1 answer
2. 484 views
A non stop bus goes from one station to another at a speed of 54 km/h. The bus returns from the second station to first station
1. 2 answers
2. 553 views
find the equation to the plane through the point (-1,3,2) and perpendicular to the plane (x+2y+2z=5) and (3x+3y+2z=8)
1. 0 answers
2. 450 views
Star Z has 1/5 the radius of Earth and 1000 times the Earth's mass. If a mass weighs 1.0 N on Earth, what does it weight on Star
1. 0 answers
2. 434 views
A chain of length l and mass ë per unit length is fully open and is held on a high frictionless table with y1 of its length
1. 0 answers
2. 560 views
A small stone of mass m is stuck on the periphery of a wheel of radius R rolling along the x-axis with a constant speed v. The
1. 0 answers
2. 511 views

Answers (6)

thanks
anja
whatis formula iron ore dencity
here the inter arrival time t~unif(4,8) the for the prob. that there will be watting > 6.5 mint = intgral(from 6.5 to 8 mint of 1/(8-4) ) = .0375
first of all multiply 11 by 3 we get 33 now we add 1 to 33 , we get 34 so the result is - 34 / 3 the negative sign is with the whole term so it will remain with the whole fraction
1-b,2-c,3-c,4-d, 5-a, 6-b, 7-a

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