pole position seats

Two boys are standing on either side of a pole that is h = 160 m long. Their angles of elevation of the top of the pole measures 30°20′ and 45°30′. Find the distance between the two boys. (The position of the boys and the foot of the pole ..

Imagine yourself sitting in a seat while travelling in a moving train. You observe no change in position with respect to the window. There is change of scene when you view through the window. The change of scene indicates that the train is movi..

Motion and Rest - Imagine yourself sitting in a seat while travelling in a moving train. You observe no change in position with respect to the window. There is change of scene when you view through the window. The change of scene indicates that the train is movi..

i) Here, the total number = 6 + 6 = 12. 12 persons can be arranged in circular permutation as (12 - 1)! = 11! ways. ii) When 6 gentlemen are arranged around a table, there are 6 positions, each being between two gentlemen for 6 ladies, when no two ladies sit side by side. Now, the number..

At high temperature, electrons move from valance band to conduction band and as a result a vacancy is created in the valence band at a place where an electron was present before shifting to conduction band. The valency is a hole and is seat of positive charge having the same va..

After the centrioles reach their positions corresponding to the two opposite poles, the chromosomes arrange themselves upon the equator of a spindle, which is formed in the cell by delicate cytoplasmic threads radiating from the centrioles. Each sister chromatid is attached at ..

The direction of the magnetic field due to a current may be studied by drawing the magnetic lines of force. A vertical wire AB is passed through a horizontal cardboard PQRS. Ion filings are sprinkled on the cardboard. Current is passed through it by connecting a battery to it. Iron filings spread e..

Mirror Formula - In a spherical mirror, the distance of the object from its pole is called the object distance (u). the distance of the image from the pole of the mirror is called the image distance (v). You already know that the distance of the principal focus from the pol..

It consists of two dees or D-shaped metal chambers D 1 and D 2 . The dees are separated by a small distance. The two dees are perpendicular to their plane. P is the position where the ion source is placed. The dees are maintained to a potential difference whose polarity alternates with ..

Neutral Points in a Magnetic Field - As a result of two magnetic fields acting at the same place, the resultant field has a special feature. At a particular point, if the compass needle does not point in any particular direction, then there is no net magnetic field at the point. Such a point is cal..