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Yogita Ingle 4 years, 5 months ago
The average velocity of an object is its total displacement divided by the total time taken. In other words, it is the rate at which an object changes its position from one place to another. Average velocity is a Vector quantity. The SI unit is meters per second. However, any distance unit per any time unit can be used when necessary, such as miles per hour (mph) or kilometer per hour (kmph).
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Yogita Ingle 4 years, 5 months ago
- An object orbiting around the sun, earth or any other colossal body is known as a satellite. There are two major types of categorization when it comes down to satellites, one is natural and the other is man-made.
- Some of the examples of natural satellites are planets, moons, and comets. Jupiter has 67 natural satellites. The earth has one permanent natural satellite, the moon we know, which causes the tides in the sea. Sometimes other objects (like asteroids) can enter into temporary orbits of the earth and become a natural satellite for a span.
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Yogita Ingle 4 years, 5 months ago
Initial Speed (u)= 54 km /hr = 54 *1000 m / 3600 s = 54*5/18 = 15 m/s
( 1km = 1000 m and 1hr = 60 mins = 60*60 seconds = 3600 seconds)
Time = 8 seconds
Final Velocity (V) = 0
we know that ,
v = u + at
0 = 15 + a*8
0 = 15 + 8a
a= -15/8 m/s²
Therefore , acceleration is -15/8 m/s²
Posted by Sheetal Rana 4 years, 5 months ago
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Yogita Ingle 4 years, 5 months ago
The Full form of DNA is Deoxyribonucleic acid. Deoxy means lack of an oxygen atom, Ribo means ribose sugar, Nucleic is found in the nucleus of cell and Acid contains negatively charged phosphate ion which is acidic. Deoxyribonucleic acids are hereditary material for human and most other living beings, I.e., they carry the genetic information for growth, development, functioning and reproduction of all known living organisms.
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Meghna Thapar 4 years, 4 months ago
Temperature in Kelvin = Temperature in °C + 273
Substitute the given value in the equation and then calculate the other unknown value.
a. 293 K = (293 – 273)
= 20 °C
b. 470 K = (470 – 273)
= 197 °C
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$¡Dh@Rth M○Nd@L 4 years, 5 months ago
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$¡Dh@Rth M○Nd@L 4 years, 5 months ago
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Meghna Thapar 4 years, 3 months ago
Fractional Distillation:
Principle: This method is used for the separation of a mixture containing two miscible liquids, for which the difference in their boiling points is less than 25o C.
Technique: The mixture is kept in a distillation flask attached with a fractionating column, having glass beads. The flask is then carefully heated. The mixture first evaporates and later condenses. The glass beads present in the fractional column provide a larger surface area for the vapours to cool down. This technique is used to separate mixtures made up of two miscible liquids with a difference in their boiling points less than 25oC.
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Yogita Ingle 4 years, 5 months ago
o concert Kelvin scale into Celsius scale we have to subtract 273 so
293K = 293 - 273 = 20 ºC,
Posted by Harshita Gupta 4 years, 5 months ago
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Yogita Ingle 4 years, 5 months ago
Because of great force of attraction particles of solids are closely packed together. This makes the space between particles of solids almost negligible. The lowest kinetic energy of particles does not able to move the particles of solids.
Posted by Ravish Kumar 4 years, 5 months ago
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Yogita Ingle 4 years, 5 months ago
Yes, it can be classified as a solid. It is an elastic solid which changes its shape on stretching and regains the same when the stretching force is removed.
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Yogita Ingle 4 years, 5 months ago
| Sl. No. | Differentiating Property | Distance | Displacement |
| 1 | Definition | The complete length of the path between any two points is called distance. | Displacement is the direct length between any two points when measured along the minimum path between them. |
| 2 | Denotation | d | s |
| 3 | Direction Consideration | To calculate distance, direction is not considered. | To calculate displacement, direction is taken into consideration. |
| 4 | Quantity | Distance is a scalar quantity as it only depends upon the magnitude and not the direction. | Displacement is a vector quantity as it depends upon both magnitude and direction. |
| 5 | Route Information | Distance gives the detailed route information that is followed while traveling from one point to another. | As displacement refers to the shortest path, it does not give complete information of the route. |
| 6 | Formula | Speed × Time | Velocity × Time |
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Meghna Thapar 4 years, 4 months ago
MKS is the system of units based on measuring lengths in meters, mass in kilograms, and time in seconds. MKS is generally used in engineering and beginning physics, where the so-called cgs system (based on the centimeter, gram, and second) is commonly used in theoretic physics. MKS and CGS system of measurement are widely used and are considered easier too because most of the object that we use in our daily life are smaller in size which is easily measured MKS and CGS system. Physical quantity: Those quantities which can be measured are known as physical quantity.
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Yogita Ingle 4 years, 5 months ago
MERISTEMATIC TISSUE
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