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Ask QuestionPosted by Harsh Vardhan 5 years, 1 month ago
- 2 answers
Meghna Thapar 5 years, 1 month ago
"The ocean looks blue because red, orange and yellow (long wavelength light) are absorbed more strongly by water than is blue (short wavelength light). So when white light from the sun enters the ocean, it is mostly the blue that gets returned. The water is in fact not colorless; even pure water is not colorless, but has a slight blue tint to it, best seen when looking through a long column of water. The absorption of light in water is due to the way the atoms vibrate and absorb different wavelengths of light.
Posted by Harsh Vardhan 5 years, 1 month ago
- 1 answers
Meghna Thapar 5 years, 1 month ago
The blue color of the sky is a result of this scattering process. At night, when that part of Earth is facing away from the Sun, space looks black because there is no nearby bright source of light, like the Sun, to be scattered. ... Every direction you looked in space you would be looking at a star. Sunlight reaches Earth's atmosphere and is scattered in all directions by all the gases and particles in the air. Blue light is scattered more than the other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time.
Posted by Muskaan Mishra 5 years, 1 month ago
- 2 answers
Prachi Priya 5 years, 1 month ago
Meghna Thapar 5 years, 1 month ago
Inertia is an object's ability to resist changes in motion. Examples of Inertia: A person is pedalling their bike and suddenly hits the front brakes and their body continues to move and they fly over the handlebars "Inertia is the resistance of any physical object to any change in its state of motion (including a change in direction). In other words, it is the tendency of objects to keep moving in a straight line at constant linear velocity.
Posted by Muskaan Mishra 5 years, 1 month ago
- 2 answers
Yogita Ingle 5 years, 1 month ago
A property closely related to an atom’s mass number is its atomic mass. The atomic mass of a single atom is simply its total mass and is typically expressed in atomic mass units or amu. By definition, an atom of carbon with six neutrons, carbon-12, has an atomic mass of 12 amu
Meghna Thapar 5 years, 1 month ago
Atomic mass (ma) is the mass of an atom. A single atom has a set number of protons and neutrons, so the mass is unequivocal (won't change) and is the sum of the number of protons and neutrons in the atom. ... Atomic weight is a weighted average of the mass of all the atoms of an element, based on the abundance of isotopes. It consists of one proton and one electron. The atomic mass for an atom of hydrogen is one dalton, which is calculated from the lone proton. Remember, electrons are too small to be considered in the atomic mass. Helium is the second lightest element, and is larger than hydrogen.
Posted by Sandeep Patil 5 years, 1 month ago
- 4 answers
Harleen Kaur 5 years, 1 month ago
Akshat Holland Minettee 5 years, 1 month ago
Harsh Vardhan 5 years, 1 month ago
Yogita Ingle 5 years, 1 month ago
Pure substances are substances that are made up of only one kind of particles and has a fixed or constant structure.
Pure substances are further classified as elements and compounds.
Posted by Komal Tank 5 years, 1 month ago
- 2 answers
Gaurav Seth 5 years, 1 month ago
The substances like CO2 and water move in and out of a cell by diffusion from the region of high concentration to low concentration. When the concentration of CO2 and water is higher in external environment than that inside the cell, CO2 and water moves inside the cell. When the concentration outside the cell becomes low and it is high inside the cell, they moves out.
Posted by 9N_14_Janvi Chaudhary 5 years, 1 month ago
- 1 answers
Meghna Thapar 5 years, 1 month ago
On the basis of physical states, all the matter can be classified into three groups – solids, liquids and gases. Examples of solids, liquids and gases are:
- Sugar, sand, iron, wood, rocks, minerals and ice are the examples of solids.
- Water, milk, oil, kerosene, petrol and alcohol are liquids.
- Air, oxygen, hydrogen, carbon dioxide and steam are gases.
Posted by Chandrika A G 5 years, 1 month ago
- 1 answers
Meghna Thapar 5 years, 1 month ago
- Diseases where microbes are the immediate causes are called infectious diseases.
- Protein-energy malnutrition (PEM) is a common childhood disorder and is primarily caused by deficiency of energy, protein, and micronutrients. PEM manifests as underweight (low body weight compared with healthy peers), stunting (poor linear growth), wasting (acute weight loss), or edematous malnutrition (kwashiorkor).
Posted by Sara Ali 5 years, 1 month ago
- 1 answers
Yogita Ingle 5 years, 1 month ago
- They are non-cellular organisms, which is enclosed in a protective envelope.
- The presence of spikes helps in attaching the viruses to the host cell.
- These viruses do not grow, neither respire nor metabolize, but they reproduce.
- They are surrounded with a protein coat – capsid and have a nucleic acid core comprising of DNA or RNA.
- They are considered both as living and non-living things. These viruses are inactive when they are present outside of host cells but become active within host cells. These viruses cause several infections and reproduce within the host cell by using the enzymes and raw materials.
Posted by Arpan Das 5 years, 1 month ago
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Posted by Roodraksh Bisen 5 years, 1 month ago
- 3 answers
Harsh Vardhan 5 years, 1 month ago
Gaurav Seth 5 years, 1 month ago
Atoms are defined as “the basic building blocks of matter”. It is the smallest constituent unit of matter that posses the properties of the chemical element. Atoms don't exist independently, instead, they form ions and molecules which further combine in large numbers to form matter that we see, feel and touch.
Sssssssssssssss Yyyyyyyyyyyyyyy 5 years, 1 month ago
Posted by Harsh Snehal Lokhande 5 years, 1 month ago
- 1 answers
Rajat Singh 5 years, 1 month ago
Posted by Anupriya Kumari 5 years, 1 month ago
- 5 answers
Yogita Ingle 5 years, 1 month ago
A,B and D are pure substances whereas c is not pure, i.e. Honey is not a pure substance.
Posted by Yati Singh 5 years, 1 month ago
- 2 answers
Yogita Ingle 5 years, 1 month ago
If copper sulphate crystals are added to water then the particles of copper sulphate crystals loses attraction between them and starts moving continuously and gets mixed up with water . Water color changes to blue .
Aryan Kumar 5 years, 1 month ago
Posted by Shani Baishwade 5 years, 1 month ago
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Posted by Raghav Aggarwal 5 years, 1 month ago
- 5 answers
Gaurav Seth 5 years, 1 month ago
Displacement is the shortest distance between the initial and the final position. Here, the car travels from stop A to B and returns to stop A.
Thus, the displacement of the car is 0 m/s.
let the distance travelled by the car from stop A to B = x km
The car travels from A to B and returns back to B. Thus,
total distance travelled = 2x km
Time while going from A to B = Distance travelled / Speed taken
= x/30 hours
Time while returning from stop B to A = x/50 hours
Posted by Ibar Rynjah 5 years, 1 month ago
- 1 answers
Posted by Priya Singh 5 years, 1 month ago
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Posted by Sushant Choudhary 5 years, 1 month ago
- 1 answers
Posted by Arpan Das 5 years, 1 month ago
- 4 answers
Posted by Suvinay Vats 5 years, 1 month ago
- 2 answers
Yogita Ingle 5 years, 1 month ago
Ground Tissue – involved in producing nutrients by photosynthesis and preserve nutrients.
Posted by Devashish Pandey 5 years, 1 month ago
- 2 answers
Posted by Srujan C D 5 years, 1 month ago
- 1 answers
Yogita Ingle 5 years, 1 month ago
Gravitational potential at any point in a gravitational field is the work done in bringing a unit mass from infinity to that point. .Gravitational potential determines the direction of motion of a body in the gravitational field of another body.
Gravitational potential energy of a particle at a point in a gravitational field due to a body is measured by the work done in moving the particle from infinity to that point. It is equal to the product of potential at the point due to the body and the mass of the particle.
We can say that gravitational potential at a point is equal to the potential energy of the unit mass kept at that point.
Posted by Anmol Dwivedi 5 years, 1 month ago
- 5 answers
Divya Gupta 5 years, 1 month ago
Priyanshu Tiwari 5 years, 1 month ago
Devashish Pandey 5 years, 1 month ago
Shree Kushwaha 5 years, 1 month ago
Posted by Vijay Kumar 5 years, 1 month ago
- 2 answers
Vikas Thakral 5 years, 1 month ago
The conditions when average speed and average velocity will be equal are
1. When the distance and displacement of the particular object are equal or you can say that when the object is moving in a straight line, because when an object is moving in a straight line the distance and displacement are equal.
2. Either the speed or velocity should be constant during the motion of the object i.e in straight line.
Yogita Ingle 5 years, 1 month ago
Average velocity would be equal to average speed when the total distance travelled equals the net displacement of a particle. This happens when a particle moves along a straight line in a fixed direction.
Posted by Aastha Gandhi 5 years, 1 month ago
- 2 answers
Janhavi Singh 5 years, 1 month ago
Almi Aami 5 years, 1 month ago
Posted by Om Anpat 5 years, 1 month ago
- 1 answers
Gaurav Seth 5 years, 1 month ago
When a battery lights a bulb, first energy transformation takes place in the battery and then in the bulb. In the battery, the chemical energy gets converted into electrical energy. In the bulb, the electrical energy from the bulb gets converted into heat energy and then into light energy.
Posted by Om Anpat 5 years, 1 month ago
- 1 answers
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Saumya Gupta 5 years, 1 month ago
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