Question
The hair of shaving brush clings together when removed
from water due to βSolution
Surface tension is a contractive tendency of the surface of a liquid that allows it to resist an external force. It is revealed, for example, in the floating of some objects on the surface of water, even though they are denser than water, and in the ability of some insects (e.g. water striders) to run on the water surface. This property is caused by cohesion of similar molecules, and is responsible for many of the behaviors of liquids.
A solid cube of side 8 cm is dropped into a rectangular container of length 16 cm, breadth 8 cm and height 15 cm which is partly filled with water. If t...
The ratio of length to breadth of a rectangle is 5:4, respectively. Perimeter of rectangle is 270 cm. If each side of a square is 25% more than the brea...
- Calculate the lateral surface area of a right circular cone whose diameter is 14 cm and vertical height is 10 cm.
A circular wire enclosing the area of 9,856 cm² is bent to form a square. How much area will be enclosed by that wire?
If the radius of the base and the height of a right circular cone are increased by 10%, what is the approximate percentage increase in volume?
- A cone has a height of 14 cm and a volume of 2,112 cmΒ³. What is the ratio of the cone's height to its radius? {Take Ο = (22/7)}
<p><p>The area of four walls of a room is 120 cm<sup>2</sup>. If the length and breadth of the room were...
A rectangular park with length and breadth of 16m and 20m, is surrounded by a path of 6m wide. Find the area of the path.
If the volume of a cylinder is 486Ο and the ratio of radius to its height is 3:2 then find the curved surface area of cylinder?
Find the area of a triangle whose base is 35 cm and altitude is 40 cms.
