who is the father of chemistry ?
Who is father of chemistry
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Science
explain dalton’s atomic theory class 9
Q Dalton’s atomic Theory Class 9 📚 Q drawbacks of dalton atomic theory class 9📚Q limitations of dalton’s atomic theory class 9📚Q dalton atomic theory class 9 ncert • Dalton’s Atomic Theory The idea that all matter consists of a large number of individual small particles originally originated from early Indian and Greek philosophers. The
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Laws Of Chemical Combination For Elements And Compounds
The reaction of two or more substances to give the products is governed by certain laws . These laws are called laws of chemical combination . On the basis of the results of experiments carried out by certain laws of chemical combination concerning the composition of matter and chemical reactions were formulated These five laws
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What is Kirchhoff ‘s first law
first law or point rule or junction rule or current rule : – According to this law in electric circuit the algebraic sum of all current unceting at a point is equal to zero i.e Σ i = 0 This law is based on charge conservation this is valid for AC as well as DC
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newton’s third law of motion class 9
NEWTON’S THIRD LAW OF MOTION If a finger wearing roller skates stands facing a wall and pushes the wall with his hands , the finger finds himself moving backwards , away from the wall ( see Figure 26 ) . It appears as if the wall also pushes the finger away . Actually , when
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during an experiment, a signal from spaceship reached the ground station in 5 minutes
Q. During an experiment , a signal from a spaceship reached the ground station in five minutes . What was the distance of the spaceship from the ground station ? The signal travels at the speed of light , that is , 3 x 10⁸ m s⁻¹ . we know that: speed = Distance travelled
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Difference between speed and velocity ( Question 1 Page 102 ) – Chapter 8 Class 9 – Motion ( Term 1 )
Difference between speed and velocity . Speed velocity 1 . Speed of a body is the distance travelled by it per unit time 1. Velocity of a body is the distance travelled by it per unit time in a given direction 2 . In speed , the direction of motion of the body is not
Newton’s second law of motion formula class 9
When two bodies, a heavy one and a light one, are acted upon by the same force for the same time, the light body attains a higher velocity (or higher speed) than the heavy one. But the momentum gained by both the bodies is the same. The link between force and momentum is expressed in
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Newton’s first law of motion formula class 9
NEWTON’S LAWS OF MOTION Newton has given three laws to describe the motion of bodies. These laws are known as Newton’s laws of motion. The Newton’s laws of motion give a precise definition of force and establish a relationship between the force applied on a body and the state of motion acquired by it. We
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how to derive the first equation of motion by graphical method
The three equations of motion : v = u + at ; s = ut +1/2 at² and v² = u² +2as can be derived with the help of graphs as described below. 1. To Derive v = u + at by Graphical Method Consider the velocity-time graph of a body shown in Figure 43.
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What Is The Difference Between Balanced And Unbalanced Forces?
Forces are of two types : Balanced forces and Unbalanced forces. We will now discuss balanced and unbalanced forces in detail, OnePlus by one. Let us start with balanced forces. Balanced forces If the resultant of all the forces acting on a body is zero, the forces are called balanced forces. A body under the
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uniform circular motion examples class 9
When a body (or an object) moves in a circle, it is called circular motion. In other words, motion in a circle is circular motion. Before we study the uniform circular motion, we will discuss how a circular path can be considered to be made up of an indefinite number of tiny sides, and a
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graphical representation of motion for class 9
We will now discuss the various types of graphs which can be used to calculate ‘speed’ (or velocity), ‘acceleration’ and ‘distance travelled’ by a body. A very important point to remember here is that in the drawing of graphs, the terms ‘speed’ and ‘velocity’ are used in the same sense. In most of the graphs
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uniform motion and nonuniform motion definition
A body has a uniform motion if it travels equal distances in equal intervals of time , no matter how small these time intervals may be . For example , a car running at a constant speed of say , 10 metres per second , will cover equal distances of 10 metres , every second
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What is the equation of uniformly accelerated motion? class 9
There are three equations for the motion of those bodies which travel with a uniform acceleration . These equations give relationship between initial velocity , final velocity , time taken , acceleration and distance travelled by the bodies . We will study these equations one by one . 1. First Equation of Motion The first
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