Question
The hair of shaving brush clings together when removed
from water due to βSolution
Surface tension is a contractive tendency of the surface ofa 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.
Monthly income of Amit and Bhola is Rs. (x + 120) and Rs. x, respectively. If monthly income of Amit is increased by 16% while that of Bhola is decrease...
'A' can complete a task in 24 days, while 'B' can finish the same task in 36 days. However, 'A' works at only 2/3 of his usual efficiency, and 'B' opera...
If 4539 = 540, 758 = 280, and 3745 = 420, then 2788 =___.
Sanjay earns Rs. 40,000 per month. He spends 20% of his income on conveyance. From the remaining amount, he allocates 25% for groceries. How much does h...
The sentence below has a word in which the letters are jumbled up. Rearrange the letters of that word, written in capital letters, to form the correct w...
- Ram has Rs. 1000 in denomination of Rs. 2, Rs. 5 and Rs. 10 only. If the ratio of number of coins of Rs. 2, Rs. 5 and Rs. 10 is 5:3:10 respectively. Find t...
Simplify the following expression: (5x + 7) 2 Β + (5x β 7) 2 .
An article is sold at a profit of 30%. Let 'a' (in Rs.) represent the cost price, 'b' (in Rs.) the selling price, and 'c' (in Rs.) the profit earned. Gi...
If in the number 86548246, 3 is subtracted to first four digit of the number and 1 is added to rest of the digits then how many digits are repeating in ...
At present, the combined age of Ravi and Rajeev is 42 years, with their ages in the ratio of 4:3. What will be the ratio of their ages six years from now?