Law of conservation of momentum states that-  For two or more bodies in an isolated system acting upon each other, their total momentum remains constant unless an external force is applied. Therefore, momentum can neither be created nor destroyed. Derivation of the conservation of momentum:Consider two colliding particles A and ... Read More

Hi Divyanshu, A parasite is an organism that may live inside the other organism’s body or on its surface to obtain nutrition, causing harm to the host.In a few parasitic relationships, the host dies while in others, it is important that the host remains alive.Example: Fleas and mosquitoes feed on ... Read More

In space objects with great mass pull other objects towards them. That pull is a force called gravity.The sun, which is a million times larger than the planets, contains an enormous amount of matter. Its mass is far greater than the planets.The sun's gravitational force is very strong. If it ... Read More

In terms of biology, transportation in plants refers to the transport of water and solutes within the plant. Transportation takes place by two different types of vascular tissues such as Xylem and Phloem. The xylem transports water and soluble mineral nutrients from root to the leaves. The phloem transports food ... Read More

Elements are the pure substance, which is made up of only one kind of atoms. They cannot be further reduced to simpler substances by any physical or chemical methods. An atom is the smallest unit of an element.Elements are classified into metals, non-metals, metalloids and noble gases.

 Pythagorean tripletsNumbers that follow the Pythagoras theorem are called Pythagorean tripletsThree numbers a, b  and c form a Pythagorean triplet if:$a^2+b^2=c^2$Example: 3,4 and 512, 5, 13 and so on$3^2+4^2=5^2$$9 + 16 = 25$.So, the numbers 3, 4, 5 form a Pythagorean triplet.

To do: Find the HCF of the 138 and 375Solution: Find the prime factorization of $138$$138 = 2 \times 3 \times 23$Find the prime factorization of $375$$375 = 3 \times 5 \times 5 \times 5$To find the HCF , multiply all the prime factors common to both numbers:Only 3 is commonTherefore, HCF of 138 and 375 is 3

We should not waste water for the following reasons.Water is essential to agriculture, using less water can greatly affect the availability of this essential commodity for growing food crops.About 97 per cent of the Earth's water is salt water, which is not suitable for drinking. The small proportion of water ... Read More

To do: Find what fraction of a day is 8hoursSolution:We know that $1$ day = $24$ hours$1$ hours = $\frac{1}{ 24}$ of a daySo 8 hours = $8\times\frac{1}{24}$                    = $\frac{8}{24}$                    =$\frac{1}{3}$Hence, $\frac{1}{3}$ of a day is 8 hours.

Next three natural numbers after 10,999 are 11,000, 11,001 and 11,002.