Why does the leaf give blue-black colour only in patches?
The variegated leaf contains chlorophyll only in patches and hence the photosynthetic activity is restricted to those patches. Thus, only those areas give blue-black colou..
Work and Energy
Introduction - For a layman the term 'work' implies any activity resulting in muscular or mental exertio..
Hypermetropia
You must have seen middle aged people holding a book away from their eyes to read properl..
Question 45
Question: The table below gives the variation of velocity of a coin of mass 20 g with time. Plot a v-t graph for the data and also calculate the force exerted by the table to bring the coin to rest. Answer: Force exerted by the table (F) = ma ..
Question: The table below gives the variation of velocity of a coin of mass 20 g with time. Plot a v-t graph for the data and also calculate the force exerted by the table to bring the coin to rest. Answer: Force exerted by the table (F) = ma ..Force of attraction between two bodies of mass m separated by a distance d:
Two Bodies of Mass m Separated by a Distance ..
Two Bodies of Mass m Separated by a Distance ..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..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 ..Exhaustible Natural Resource
The exhaustible natural resources are limited in nature and are liable to be degraded in quantity and quality by human activities. Examples are forests, soil, wild animals, minerals, fossil fuels et..
Cowper's Glands
They are a pair of small ovoid glands that secrete lubricating fluid into the urethra just before it enters the penis. The secretions of these glands make the sluggish sperms more active and help in the passage of sperms through the duct system and then in the ejaculati..
Question 39
Question: For how long should a force of 200 N act on a body of 20 kg, so that it acquires a velocity of 100 m/s? Answer: Time required to change the velocity of the body is to be calculated. ..
Question: For how long should a force of 200 N act on a body of 20 kg, so that it acquires a velocity of 100 m/s? Answer: Time required to change the velocity of the body is to be calculated. ..See what our Users say :
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