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Variable mass systems
We know by Newton's laws that Consider the case of sand falling vertically on a horizontal conveyor belt moving at a velocity 'v'. The external force on the belt is in the direction of the velocity v. The mass of the belt is not considered as it is moving at constant velocity v...
We know by Newton's laws that Consider the case of sand falling vertically on a horizontal conveyor belt moving at a velocity 'v'. The external force on the belt is in the direction of the velocity v. The mass of the belt is not considered as it is moving at constant velocity v...Properties of compounds
A compound cannot be separated into its constituents by mechanical or physical means. For example, if we bring a magnet near a sample of iron sulphide, the iron present in the iron sulphide cannot be separated . Properties of a compound differ entirely from those of its constituent elements. ..
Closed Circulatory System in Humans
Closed Circulatory System in Humans - The closed circulatory system can be represented as follows. Diagram showing inter-relationship between artery, vein and capillary The closed blood vascular system is a very well developed system This is so because, a) The organisms have a thick body wall to pr..
Closed Circulatory System in Humans - The closed circulatory system can be represented as follows. Diagram showing inter-relationship between artery, vein and capillary The closed blood vascular system is a very well developed system This is so because, a) The organisms have a thick body wall to pr..Entropy
The extent of disorder or randomness in a system may be expressed by a property known as entropy. Entropy may be termed as the property of a system which measures the degree of disorder or randomness in the system. It is generally expressed by the symbol, S. Entropy like internal energy and enthalp..
Entropy
Entropy - The extent of disorder or randomness in a system may be expressed by a property known as entropy. Entropy may be termed as the property of a system which measures the degree of disorder or randomness in the system. It is generally expressed by the symbol, S. Entropy like internal energy a..
The Need to Manage Our Resources
? One has not anticipated some of the impacts of industrial and technological advancement. When the industrial revolution started some 250 years ago, the world population was at 600 million - that seems like a lot of people but now the world population is now almost ten times at 6 billion and will ..
? One has not anticipated some of the impacts of industrial and technological advancement. When the industrial revolution started some 250 years ago, the world population was at 600 million - that seems like a lot of people but now the world population is now almost ten times at 6 billion and will ..
The First Law of Thermodynamics
. If the can is kept on a heater, the hot bottom of the cylinder supplies heat to the gas. If the piston is pushed out to some distance, as the piston moves out, the gas does work and the gas loses that amount of energy. Thus, the gas gains energy as heat gets supplied to it and..
Kinetic Theory of Matter
This theory explains the physical properties of matter in terms of motion of its molecules. According to this theory, every substance (solid, liquid or gas) consists of a large number of minute particles called molecules . A molecule may be defined as the smallest particle of a substance that can e..
Kinetic Theory of Matter
Kinetic Theory of Matter - This theory explains the physical properties of matter in terms of motion of its molecules. According to this theory, every substance (solid, liquid or gas) consists of a large number of minute particles called molecules . A molecule may be defined as the smallest particl..
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