SureDen
Null vector: A vector whose initial and terminal points coincide is called zero vector. Thus the magnitude of zero vector is 0 and has an arbitrary (i.e., no
VECTOR
A physical quantity having magnitude and direction and also obeying the law of vector addition is a vector quantity. A vector quantity is re
Triangle Law of Vector Addition of Two Vectors.
If two non zero vectors are represented by the two sides of a triangle taken in same order then the
Consider a vector R in x-y plane as shown in fig. If we draw orthogonal vectors Rx and Ry along x and axes r
Centre of Mass
Centre of mass of a system (body) is a point that moves as though all the mass were concentrated there and all external forces were
Physical Quantity.
A quantity which can be measured and by which various physical phenomenon can be explained and expressed in form of laws of physics is called a physical quantity. For example length, mass, time, force etc.
FEATURES TO CLONE A VECTOR :
The study of electric charges in motion is called current electricity.
Electric current :- the flow of electric charges through a conductor constit
It states that the force of attraction or repulsion between two stationary point charges is
Directly proportional to the product of the magnitudes of the two
Velocity: Rate of change of position with time is called velocity.
(a) It is a vector quantity
Process of Recombinant DNA Technology
Recombinant DNA technology involves the following steps:
Position.
Position of an object or point is expressed in terms of co-ordinates.Position of any point is completely expressed by two factors: Its distance from the observer and its direction with respect to observer.
That is why position is characte
Vector form of ohm’s law
if E is the magnitude of electric field in a conductor of length I, then the Potential difference across its ends is
V = EI
A
Angular Displacement
Cloning Vectors
The vectors are the DNA molecules that can carry a foreign DNA segment into the host cell.
Angular Momentum
The turning momentum of particle about the axis of rotation is called the angular momentum of the particle.
it is the property by virtue of which a conductor oppose the low of charges through it.
SI unit of resistance is Ohm. 1 ohm is the resistance offered by a conductor if
Scalar Product of Vectors
Definition : The scalar product (or dot product) of two vectors is defined as the product of the magnitude of two vectors
Newton's law of Gravitation.
Newton's law of gravitation states that every body in this universe attracts every other body with
Torque or Moment of Force
A force can rotate a nut when applied by a wrench or it can open a door while the door rotates in its hinges (i.e.) in ad
Position
The position of a particle refers to its location in the space at a certain moment of time.
It is concerned with the question - “ where is the particle at a particular instant of time ? ”
Electromagnetic waves
It is a disturbance which carries energy in space due to the simultaneously time varying mutually perpendicular electric and
Biot-Savart law: According to Biot-Savart law, the magnitude of the field dB is
Directly proportional to the current I through the conductor. i.
Torque on current loop in a uniform magnetic field:
Infectious diseases:
These are further divided into five classes:
1) Bacterial infectious diseases: For example; typhoi
Gravitational Field.
The space surrounding a material body in which gravitational force of attraction can be experienced is called its gravitationa
Phylum : Arthoropoda
Class : Insecta
Subclass : Pterygota
Order : Dictyogota
Family : Blattidae
Genus : periplaneta
The electric field around a charge can be described in two ways:
By electric field and
By electrostatic or electric potential
Electric potential energy:
The electric potential energy of a system of point charges may be defined as the amount of work done in assembling the
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