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Karmit Chugh 4 years, 3 months ago
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Meghna Thapar 4 years, 3 months ago
While catching a ball, a cricket player lowers his hands, because by doing so, he increases the time of catch. That is, the person increases the time to bring about a given change in momentum, and hence rate of change of momentum decreases. Thus, a small force is exerted by ball on the hands. To reduce this force on the opposite direction the fielder lowers his hands ( which is in the direction of the balls original speed). Moving the hands in the direction of the ball's speed causes the ball to slow down first and then stop. This causes less force on the hands.
Posted by Anu Yalani 4 years, 3 months ago
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Karmit Chugh 4 years, 3 months ago
Posted by Anunay Shreyas 4 years, 3 months ago
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Meghna Thapar 4 years, 3 months ago
Components of homogeneous mixtures “can usually be separated by taking advantage of the different properties of the individual components.” In the process of distillation, a mixture may be heated “until the component that boils at the lowest temperature becomes a vapor and can be separated”. A mixture of two gases can be separated by fractional distillation technique. Fractional distillation is a process by which components in a chemical mixture are separated into different parts called fractions according to their different boiling points.
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Meghna Thapar 4 years, 3 months ago
Manure is organic matter used as fertilizer in agriculture. Manures improve the fertility of the soil by adding organic matter and lots of nutrients, such as nitrogen that is trapped by bacteria in the soil. Higher organisms then feed on the fungi and bacteria in a chain of life. Fertilizers provide essential nutrients to plants in form of soluble salt compounds, and directly affect plant growth. Soil amendments indirectly affect plants by improving the physical or chemical properties of soil. ... Fertilizers also add nutrients that are essential to plants in the form of soluble salt compounds. Manures contribute to the fertility of the soil by adding organic matter and nutrients, such as nitrogen, that are trapped by bacteria in the soil. Kinds of manure : Green manure, compost or vermicompost. Manure helps in enriching soil with nutrients and organic matter and thus, increases soil fertility. Some of these impacts include algae blooms causing the depletion of oxygen in surface waters, pathogens and nitrates in drinking water, and the emission of odors and gases into the air. Nutrients from manure and fertilizers enter lakes and streams through runoff and soil erosion.
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Kanav Dumra 4 years, 3 months ago
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Meghna Thapar 4 years, 3 months ago
When a tree is shaken vigorously, its fruits and leaves fall down. This is due to the fact that when the tree is shaken, it moves to and fro slightly but its fruits and leaves tend to remain at the rest due to the inertia and hence detach from the tree and fall down.
Meghna Thapar 4 years, 3 months ago
When we shake the branch of tree its fruits and dry leaves falls. when a tree is shaken it's fruits and leaves fall down due to the gravitational force exerted by earth. Due to inertia of rest, the leaves try to be in rest when a tree is shaken. But the branch and trunk comes into motion which causes the leaves to separate from its branch. Hence, the leaves fall when a tree is shaken.
Posted by Sudipta Roy Talukder 4 years, 3 months ago
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Meghna Thapar 4 years, 3 months ago
As y is a nobles gas the group of y is 18th group or zero group
X=A-2, group of X is 16th group or VI A
Z=A+23,group of Y is 2nd group or IIA
(b) X→→ valency =2 (electronegative)
Z →→ valency =2 (elctropositive)
Hence the formula is ZX
Posted by Vaishali Shetti 4 years, 3 months ago
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Meghna Thapar 4 years, 3 months ago
'Magnitude of displacement' is a technical way of saying 'distance, as measured directly between the start point and the end point'. As it includes no directional information it is a 'scalar' quantity rather than a 'vector'. Example, imagine two friends live on opposite sides of a lake. This makes displacement a vector quantity because it incorporates both movement, magnitude and direction. In the shorthand of physics, displacement is written as Δs. 'Delta' is a Greek letter shaped like a triangle and it's used to represent 'change in. ' The 's' stands for spatial location.
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Sia ? 3 years, 5 months ago
Walk from one corner of basketball court to another corner
let the length of the court = a meter;
Let breadth of the court = b meter;
So the distance covered by the person to reach from one corner to another corner of the basketball court is = a+b meter
Displacement = underoot a^2+b^2
This is the total displacement by the person to reach from one corner to the other corner of a basketball court.
Displacement is less than or equal to the distance. Displacement depends on the route.
Posted by Mala Kumari 4 years, 3 months ago
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Jiya9 Bagadiya 4 years, 3 months ago
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Insha Fatima 4 years, 3 months ago
Yogita Ingle 4 years, 3 months ago
When the bus starts suddenly, then, the lower part of body starts being in motion because it is in touch of bus in motion, while the upper part of body tries to be at rest for sometime, because of inertia at rest. this is why, passengers tends to fall backwards when it starts suddenly.
Posted by Tanisha Singh 4 years, 3 months ago
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Rishit Bhatnagar 4 years, 3 months ago
Meghna Thapar 4 years, 3 months ago
A colloid may be a mixture of one substance that may spread out evenly inside another substance. They may be in two different phases or states of matter. One substance can be the dispersion medium, such as water or gas. Some examples include whipped cream, mayonnaise, milk, butter, gelatin, jelly, muddy water, plaster, colored glass, and paper. Every colloid consists of two parts: colloidal particles and the dispersing medium. The dispersing medium is the substance in which the colloidal particles are distributed. When standing, a colloidal solution or colloid settles down. Thus, we can conclude that out of the given options honey does not settles down due to its viscosity and therefore it is not a colloid.
Posted by Prashant Gupta 4 years, 3 months ago
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Insha Fatima 4 years, 3 months ago
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Insha Fatima 4 years, 3 months ago
Yogita Ingle 4 years, 3 months ago
Osmosis is a process by which the molecules of a solvent pass from a solution of low concentration to a solution of high concentration through a semi-permeable membrane.
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Rishit Bhatnagar 4 years, 3 months ago
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