1) Consider a vessel containing a fluid. Let the acceleration of vessel in vertical direction be, ay. Consider a small cylindrical element dy at a height y from bottomFrom figure, P₁ A – P₂A – mg = may P₁ A – P₂A = m (g + ay) But (P₁ – P₂) A2 = A dy (g Read more about Pressure in case of Accelerating Fluid[…]
Teaser 1: I am an odd number. Take away one letter and I become even. What number am I? Answer: Seven (take away the‘s’ and it becomes ‘even’). Teaser 2: What word looks the same backwards and upside down? Answer: SWIMS. Teaser 3: A boy fell off a 30 meter ladder but did not get hurt. Why not? Answer: He fell off the bottom Read more about Brain Teaser 4 (With Answers)[…]
Teaser 1: I am an odd number. Take away one letter and I become even. What number am I? Teaser 2: What word looks the same backwards and upside down? Teaser 3: A boy fell off a 30 meter ladder but did not get hurt. Why not? Teaser 4: Using only addition, how do you add eight 8’s and get the number 1000? Read more about Brain Teaser 4[…]
A plane is a surface such that if any two points are taken on it, the line segment joining them lies completely on the surface. In other words, every point on the line segment joining any two points lies on the plane. Every first degree equation x, y and z represents a plane i.e., ax Read more about Equation of Plane and its different forms[…]
The rules are summarized as follows: 1. Select the longest continuous chain containing the carbon atom having functional group(s). 2. The numbering of atoms in the parent chain is done in such a way that carbon atom bearing the functional group gets the lowest number. 3. It two or more same functional groups are present, Read more about IUPAC Rules for Naming Organic Compounds Containing One or More Functional Groups[…]
Teaser 1: Feed me and I live, yet give me a drink and I die. Answer: Fire Teaser 2: Forward I am heavy, but backward I am not. What am I? Answer: Forward I am ton, backward I am not Teaser 3: He has married many women, but has never been married. Who is he? Answer: Priest Teaser 4: Take off my Read more about Brain Teaser 3 (With Answers)[…]
In order to express quantitative magnitudes only approximately, the concept of order-of-magnitude is often employed. For example, the height of a small insect, say an ant, might be 8 x 10¯⁴ m ≈ 10¯³. We would say that the order of magnitude of the height of an ant is 10¯³m. Similarly, though the height Read more about Order of Magnitude Calculations[…]
Teaser 1: Feed me and I live, yet give me a drink and I die. Teaser 2: Forward I am heavy, but backward I am not. What am I? Teaser 3: He has married many women, but has never been married. Who is he? Teaser 4: Take off my skin – I won’t cry, but you will! What am Read more about Brain Teaser 3[…]
In view of requests from various candidates/parents as well as schools, the date of online submission of application form of JEE (Main) – 2017 has been extended up to 16.01.2017 (11.59 PM). The fee may be paid by the candidates up to 17.01.2017 (11.59 PM). It is further informed that the other terms and conditions Read more about JEE Mains Application Last Date Extended to 16.01.2017[…]
Let the equation of a plane be ax + by + cz + d = 0 When P and Q are on the same side of the plane ⇒ ⇒ ⇒ ax1 + by1 + cz1 + d and ax2 +by2 + cz2 + d are of the same sign. When P and Q are Read more about Distance of point from plane[…]