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Ask QuestionPosted by Raj Chowdhury 7 years, 11 months ago
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Posted by Raj Chowdhury 7 years, 11 months ago
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Yogita Ingle 7 years, 11 months ago
Circular motion: (i) If a body or a particle move in the circular path the motion is said to be a circular motion.
(ii) In circular motion the particle or a body moves around a point which is not on the particle or the body in the circular motion.
(iii) Example: a toy train on a circular track has circular motion.
Rotatory Motion: (i) The motion of an object is said to be rotatory if the particles of the object rotate in a circular path with respect to an imaginary axis, known as the axis of rotation.
(ii) The axis of rotation can be either inside or outside the body of the object that is spinning.
(iii) Example: In general, a toy train on a track does not have an axis that it's rotating around, so it would not have rotational motion. A wheel on a car, however, rotates around the car's axle, so it does have rotational motion.
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Yogita Ingle 7 years, 11 months ago
Chemical changes involve chemical reactions and the creation of new products. Typically, a chemical change is irreversible. In contrast, physical changes do not form new products and are reversible.
Examples of chemical changes: rusting of iron, combustion (burning) of wood, metabolism of food in the body etc.
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Yogita Ingle 7 years, 11 months ago
The outer layer of the earth is formed of soil. So when we fall on the ground, our clothes get dirty because of soil. Its thickness varies from few millimeters to several meters. Soil formation occurs as a result of a gradual breakdown of rocks. Rocks are broken down into finer particles through many processes such as weathering and erosion. The geological components are mixed with organic materials to form soil. This implies that it is a mixture of rocks which are broken into smaller particles and the dead and decayed organic matter along with the little microbes.
Plants do not grow in the sand because pure sand is only rock particulate matter and it does not contain the minerals required for the proper growth of plants. Sand can be converted into soil by adding organic matter to it. There are two main components of soil, the rock particles and the organic matter. Soil also has a lifecycle of its own. Formation of soil starts with the disintegration of rocks under certain environmental conditions.
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Yogita Ingle 7 years, 11 months ago
Circular motion: (i) If a body or a particle move in the circular path the motion is said to be a circular motion.
(ii) In circular motion the particle or a body moves around a point which is not on the particle or the body in the circular motion.
(iii) Example: a toy train on a circular track has circular motion.
Rotatory Motion: (i) The motion of an object is said to be rotatory if the particles of the object rotate in a circular path with respect to an imaginary axis, known as the axis of rotation.
(ii) The axis of rotation can be either inside or outside the body of the object that is spinning.
(iii) Example: In general, a toy train on a track does not have an axis that it's rotating around, so it would not have rotational motion. A wheel on a car, however, rotates around the car's axle, so it does have rotational motion.
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