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Cell - A Unit of Life
All living organisms, whether plants or animals, are made up of microscopic units called cells. The cell occupies the same central position in biology as the atom in the physical sciences..
The force of attraction when the distance is doubled:
Two Bodies of Mass m Separated by a Distance 2d ..
Two Bodies of Mass m Separated by a Distance 2d ..Solution:
Mass of the dog (m) = 20 kg Velocity (v) = 12 m/s Kinetic energy of the dog = 144..
Mass of the dog (m) = 20 kg Velocity (v) = 12 m/s Kinetic energy of the dog = 144..To show that 1 kg m/s = 1 N s
By definition 1N = 1kg m/s 2 Multiply equation (1) by second ..
By definition 1N = 1kg m/s 2 Multiply equation (1) by second ..Second Equation of Motion
From equations (1) and (2) The first equation of motion is v = u + at. Substituting the value of v in equation (3), we get ..
From equations (1) and (2) The first equation of motion is v = u + at. Substituting the value of v in equation (3), we get ..Solution:
Mass of the bag of rice = 75 kg Work done = 4900 J Work done in lifting the bag of rice is stored in it as its potential energy. Therefore, Potential energy = mgh Height = 6.67..
Mass of the bag of rice = 75 kg Work done = 4900 J Work done in lifting the bag of rice is stored in it as its potential energy. Therefore, Potential energy = mgh Height = 6.67..Solution:
The work done in lifting coal is nothing but gravitational potential energy. Mass of coal = 10 5 kg Time = 1 hour = 60 x 60 s = 3600 s Power of the eng..
The work done in lifting coal is nothing but gravitational potential energy. Mass of coal = 10 5 kg Time = 1 hour = 60 x 60 s = 3600 s Power of the eng..See what our Users say :
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