Question
After rising a short distance the smooth column of smoke
from a cigarette breaks up into an irregular and random pattern. In a similar fashion, a stream of fluid flowing past an obstacle breaks up into eddies and vortices which give the flow irregular velocity components transverse to the flow direction. Other examples include the wakes left in water by moving ships the sound produced by whistling and by wind instruments. These examples are the results ofSolution
Turbulent flow is accompanied by random, irregular, local circular currents called vortices.
- A rod of length of 616 cm and 35cm radius is melted and converted into a sphere of radius 21cm, find how many such proper spheres can be made?
A paper is in the form of rectangular piece PQRS in which PQ = 40 cm and QR = 28 cm. A semi-circular portion with QR as diameter is cut off. Find the ar...
If in a ΔABC, AD is internal angle bisector & D is a point on BC, AB = 5cm, BC = 7cm then what is BD:CD?
The radius of a cylinder is increased by 20%, and its height is decreased by 10%. Find the percentage change in the volume of the cylinder.
If the area of square is 225 cmsup2; and the breadth of rectangle is 20% more and the length is 30% more than the side of the square, then find the the ...
In measuring the sides of a rectangle, there is an excess of 14% on one side and 10% deficit on the other. Then the error percent in the area is
A solid sphere has a radius of 7 cm. A hemisphere is removed from the sphere. What is the volume of the remaining part of the sphere?
If the two adjacent sides of a rectangle are x cm and x – 10 cm and its perimeter is 68 cm then find its area?
What is the difference between (in m2) the area of a circular field of radius 21 metres and area of a rectangular piece of land having its di...
A rectangular piece of copper foil of length 21 cm and area 1386 cm2 is folded along its width to form a cylinder such that there is only one...
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