Science > Biology > Human Anatomy and Physiology > Cardiovascular System > Circulatory System and its Function In living things, many substances such as food, gases, minerals salts, hormones and waste products have to be transported from one part of the body to another. Plants and animals have a system of transporting substances throughout their body. […]
Science > Biology > Digestion and absorption in Human > Nutrition Energy is required by living beings for performing different activities. Energy is contained in the food. Food can be defined as a collection of chemicals taken by an organism for the purpose of the growth, repair, and replacement of body cells, energy releases, and […]
Photosynthesis is an important activity that occurs in all green plants, whether flowering or non- flowering. It is the only process by which solar energy is converted into chemical energy. Photosynthesis may be defined as the synthesis of carbohydrates by the green organs (containing chlorophyll) of a plant in presence of sunlight from carbon dioxide […]
Science > Physics > Elasticity > Longitudinal Stress and Strain In this article, we shall study the concept of stress, strain, and modulus of elasticity. Main focus will be on longitudinal stress, longitudinal strain, and Young’s modulus of elasticity. Concept of Stress: The net internal elastic force (restoring force) acting per unit area of the […]
Science > Physics > Elasticity > Classification of Materials In this article, we shall study the deformation in the body due to the application of deforming force and classification of materials on this behaviour. Effects of Applied Force on a Body: If the forces acting on a body are unbalanced i.e. the resultant force acting […]
Science > Physics > Force > Simple Numerical Problems on Force In this article, we shall study to solve numerical problems to calculate the magnitude of force, momentum, and change in momentum. Example – 01: The speed of a tortoise and hare are 1 m/s and 3 m/s respectively. The mass of the hare is 5 […]
Science > Physics > Force > Applications of Newton’s Laws Newton’s laws of motion have everyday applications. The change in momentum of a body in a small time is a cause of large force. Most of the applications are related to the concept of change in momentum. Cricket fielder lowers his hand while catching a […]
Science > Physics > Force > Newton’s Third Law of Motion In this article, we shall study Newton’s third law of motion and the concept of action-reaction pair of forces. Statement: To every action, there is always equal, opposite and simultaneous reaction. Explanation: Let us consider a block of metal kept on the table. The […]
Science > Physics > Force > Newton’s Second Law of Motion In this article, we should study the concept of momentum and Newton’s Second Law of Motion. To apply Newton’s second law of motion, the body should be acted upon by an unbalanced force. Thus to apply this law we should consider a net force […]
Science > Physics > Force > Newton’s First Law of Motion Newton’s laws of motion are three physical laws that, together, laid the foundation for classical mechanics. In this article, we shall discuss Newton’s first law of motion and the concept of inertia of a body. Statement of Newton’s First Law of Motion: Every material body […]