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Ask QuestionPosted by Sanjana Dangari 5 years, 5 months ago
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Gaurav Seth 5 years, 5 months ago
PHYSICAL CHANGE: When the matter or substance changes in its physical properties we can say it is undergoing physical change. 1. During the physical change neither the chemical composition nor chemical nature of the substance changes.
Plain sheet of paper
For example:Tearing a paper is a physical change because when the paper is torn only the appearance of paper is changed.
2.Physical changes are reversible.
Posted by Sanjana Dangari 5 years, 5 months ago
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Kaushal Kashyap 5 years, 5 months ago
Gaurav Seth 5 years, 5 months ago
Skin
Skin is the respiratory organ in earthworm and amphibians such as frog. The respiratory gases diffuse through the surface of skin in such animals. Frog can respire by both through lungs and skin.
Posted by Sanjana Dangari 5 years, 5 months ago
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Gaurav Seth 5 years, 5 months ago
During the process of exhalation the ribs move Downwards
During exhalation, the diaphragm moves up and ribs move downwards and inwards, decreasing the space in the chest cavity, this increases the air pressure inside the lungs and forces the air out of the lungs.
Posted by Ritik Singh 5 years, 5 months ago
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Posted by Sanjana Dangari 5 years, 5 months ago
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Meghna Thapar 5 years, 5 months ago
A green substance in plants called chlorophyll traps the energy from the Sun needed to make food. Chlorophyll is mostly found in the leaves of a plant. The leaf can be thought of as a food factory. The leaf is the part of the plant that produces food for the plant by the process of photosynthesis. The leaf has chlorophyll which gives the green color to the leaf. Chlorophyll makes food for the plant using carbon dioxide, water, nutrients, and sunlight.
Posted by Sanjana Dangari 5 years, 5 months ago
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Meghna Thapar 5 years, 5 months ago
The part of the plant which produces food is a leaf. Leaves prepare food in presence of sunlight by a process called photosynthesis. In this process, food is produced by utilizing water and carbon dioxide in the presence of sunlight. Therefore, leaves are called food factories of the plants. A green substance in plants called chlorophyll traps the energy from the Sun needed to make food. Chlorophyll is mostly found in the leaves of a plant. The leaf can be thought of as a food factory. Once the food is made in the leaf, it is transported to the other parts of the plant such as the stem and roots.
Posted by Yashi Singh 5 years, 5 months ago
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Posted by Savitri Kumar 5 years, 5 months ago
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Yogita Ingle 5 years, 5 months ago
Hans Christian Oersted (1777 – 1851) was the first to show that electric current also produces magnetic effect. He kept a magnetic compass near a current carrying conductor. It was observed that the magnetic compass shows deflection, when the current passes through the conductor.
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Meghna Thapar 5 years, 4 months ago
A font is a graphical representation of text that may include a different typeface, point size, weight, color, or design. The image shows examples of different computer fonts. Software programs like Microsoft Word, Microsoft Excel, and WordPad allow users to change the font used when typing text in the document or spreadsheet, as do web designers. In a web browser, font style is a CSS (custom style sheet) property used in HTML and ASP.NET programming, defining the font style for text. There are four possible options for font style. normal. italic. oblique.
Posted by Sumera Anjum 5 years, 5 months ago
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Aayushri Singh 5 years, 5 months ago
Pranjal Singh 5 years, 5 months ago
Yogita Ingle 5 years, 5 months ago
Dignity means thinking of one self and others as worthy of self-respect.
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Smrutirekha Raul 5 years, 5 months ago
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Yogita Ingle 5 years, 5 months ago
Importance of Soil
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Soil allows the growth of plants. It supplies water and nutrients that are required in the growth of plants.
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The soil is the main part of agriculture. Different types of soils support different kinds of crops. Without agriculture, food, shelter and clothing are not possible.
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Many microorganisms live in the soil.
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Underground water is used for various purposes.
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Aayushri Singh 5 years, 5 months ago
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Jennis Chandna 5 years, 5 months ago
Jiya V ✌✌?? Katagi 5 years, 5 months ago
Rachna Bhagat 5 years, 5 months ago
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Posted by Sanjana Dangari 5 years, 5 months ago
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Posted by Sanjana Dangari 5 years, 5 months ago
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Yogita Ingle 5 years, 5 months ago
41cm is the diagonal and 40cm is the length.
hyp² = length² + breadth²
41² = 40² + breadth²
1681 = 1600 + breadth²
1681 - 1600 = breadth²
breadth² = 81
breadth = √81
= 9cm
Perimeter = 2( l + b )
= 2 * (40 + 9)
= 2 * 49
= 98cm
The perimeter of the rectangle is 98cm.
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Avni Sreeram 5 years, 5 months ago
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