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Ask QuestionPosted by Kavita Biradar 4 years, 4 months ago
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Posted by Aman Maurya 4 years, 4 months ago
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Meghna Thapar 4 years, 4 months ago
Deuterium is a hydrogen isotope consisting of one proton, one neutron and one electron. Tritium is a hydrogen isotope consisting of one proton, two neutrons and one electron. It is radioactive, with a half-life of 12.32 years. The main difference between protium, deuterium, and tritium is that protium has no neutrons in its nuclei, whereas deuterium is composed of one neutron and tritium is composed of two neutrons. Protium is an isotope of hydrogen that is composed of one proton and one electron.
Posted by Kashvi Srivastava 4 years, 4 months ago
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Posted by Prithviraj Talikoti 4 years, 4 months ago
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Ekta Ekta 4 years, 4 months ago
Yogita Ingle 4 years, 4 months ago
Radial symmetry- if the imaginary cut passes through central axis but any plane of body,it gives two equal halves.Ex.starfish
Posted by Khushi Sahni 4 years, 4 months ago
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Posted by Ankit Mishra 4 years, 4 months ago
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Muskan Thakur 4 years, 4 months ago
Yogita Ingle 4 years, 4 months ago
The density of material shows the denseness of that material in a specific given area. A material’s density is defined as its mass per unit volume. Density is essentially a measurement of how tightly matter is packed together. It is a unique physical property for a particular object. The principle of density was discovered by the Greek scientist Archimedes. It is easy to calculate density if you know the formula and understand its related units.
Posted by Khachuk Kumar Debbarma 4 years, 4 months ago
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Yogita Ingle 4 years, 4 months ago
Diffusion is the process in which molecules of a substance move from the place of their higher concentration to the place of their lower concentration (no membrane is required). But during osmosis, the solvent (water) molecules move from the place of their higher concentration to the place of their lower concentration through a semi-permeable membrane. Thus, osmosis is termed as a special kind of diffusion.
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Posted by Poonam Jain 4 years, 4 months ago
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Yogita Ingle 4 years, 4 months ago
Chromatography is the technique used for separation of those solutes that dissolve in the same solvent.
To understand how this technique can be used let us perform an activity.
Take a thin strip of filter paper. Draw a line on it using a pencil, approximately 3 cm above the lower edge as shown in figure(a). Put a small drop of ink (water soluble, that is, from a sketch pen or fountain pen) at the centre of the line. Let it dry. Lower the filter paper into a jar/glass/ beaker/test tube containing water so that the drop of ink on the paper is just above the water level, as shown in Fig(b) and leave it undisturbed.
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Yogita Ingle 4 years, 4 months ago
The different states in water is found in the water cycle are solid state , liquid state and gaseous state..
1. Water occurs in the form of water vapour in the gaseous state. It evaporates from the surface of water bodies and mixes with air(evaporation).
2. Water vapour condenses high up in the atmosphere and falls on the earth in the form of rain in liquid state( condensation).
3. In Solid state water is formed by the freezing of liquid droplets in upper layer of atmosphere these droplets fall on the earth in the form of Snow hail and sleet ( called precipitation).
Posted by Suhani Singh 4 years, 4 months ago
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Meghna Thapar 4 years, 4 months ago
When an ion is formed, the number of protons does not change. Neutral atoms can be turned into positively charged ions by removing one or more electrons. ... Atoms that gain extra electrons become negatively charged. A neutral chlorine atom, for example, contains 17 protons and 17 electrons. An anion is an ion that carries a negative charge, causing it to migrate to the anode (positive electrode) in electrolysis. It has more electrons than protons, resulting in the negative charge.
Posted by Hæçķəŕ 894 4 years, 4 months ago
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Meghna Thapar 4 years, 4 months ago
In the Marvel Universe, vibranium is a rare material found in Wakanda, home of King T'Challa (aka Black Panther). Vibranium's unique properties have enabled Wakanda to become an unrivaled technological powerhouse. Vibranium is a real metal found only in the fictional country of Wakanda. So it's real, but only if you live in a world that contains a country in Africa called Wakanda that everyone assumes is a backwards third world country but is, in fact, a technological Marvel. ... Wakandan Vibranium is considered to be the standard.
Posted by Joban Bhangu 4 years, 4 months ago
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Aadarsh Chowdhary 4 years, 4 months ago
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Posted by Ajay Chaurasiya 4 years, 4 months ago
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Meghna Thapar 4 years, 3 months ago
Tyndall effect can be defined as the scattering of a beam of light by colloidal particles present in a colloidal solution. This effect can be observed when a fine beam of light passes through a small hole in a dark room. This effect occurs due to the scattering of light by particles of dust or smoke present in the air. The Tyndall effect can also be observed when sunlight passes through the canopy of a dense forest. In the forest, the mist contains tiny droplets of water which act as colloidal particles dispersed in the air.
Posted by Jayati Thukral 4 years, 4 months ago
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Preeti Sharma 4 years, 4 months ago
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- Inertia is the natural tendency of an object to resist a change in its state of motion or of rest.
- The mass of an object is a measure of its inertia.
- A force that is just enough to cause a small cart to pick up a large velocity will produce a negligible change in the motion of a train, because of train’s large inertia.
Posted by Anshika Kumari 4 years, 4 months ago
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Aadarsh Chowdhary 4 years, 4 months ago
Yogita Ingle 4 years, 4 months ago
Given that ,
1st 30 km uniform speed is (u1) = 40 km/h
2nd 30 km uniform speed is ( u2 ) = 20 km/h
total distance ( d ) = 30 + 30 = 60 km
time taken in 1st time = d / t = 30/40 also, 3h / 4 = 180/4 = 45 min
time taken in 2nd time = d/t = 30/20 also, 3h/2 = 180/2 = 90 min
total time = 45 + 90 = 135 min = 135/60 h
average speed = 60/135/60 = 60 * 60 /135 = 26.66 km/h
Posted by Prithviraj Talikoti 4 years, 4 months ago
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Yogita Ingle 4 years, 4 months ago
AIDS i.e. Acquired immune deficiency syndrome, is the final stage of HIV disease, which causes severe damage to the immune system. Human immunodeficiency virus (HIV) causes AIDS.
The virus attacks the immune system and leaves the body vulnerable to a variety of life-threatening infections and cancers. Common pathogens that usually do not cause serious disease in people with healthy immune systems can cause fatal illnesses in people with AIDS.
The virus can be spread (transmitted) through sexual contact, through blood transfusions or needle sharing, from infected pregnant mother to child or from a nursing mother to her baby through her breast milk. Blood, semen, vaginal secretions, and breast milk have been shown to transmit this infection to others.
Posted by Rohan Mishra 4 years, 4 months ago
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Sneha Kashyap 4 years, 4 months ago
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Posted by Aparna Singh 4 years, 4 months ago
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Yogita Ingle 4 years, 4 months ago
Let the initial velocity=u m/s
Let ' t' be the time taken to reach the maximum height h.
At maximum height, velocity becomes zero and the ball starts it's backward journey .
Here in the graph, we can see that velocity in backward journey increases but in negative direction till the stone reaches to ground.
Please refer the attachment for velocity time graph.
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Gaurav Seth 4 years, 4 months ago
Euglena is a protist that can both eat food and can photosynthesize. When acting as a heterotroph, the Euglena surrounds a particle of food and consumes it by phagocytosis. When acting as an autotroph, the Euglena utilizes chloroplasts to produce sugars by photosynthesis thats why it is said to be a plant animal.
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