Question
A rubber ball is dropped from a height of 2 metres. To
what height will it rise if there is no loss of energy/velocity after rebounding?Solution
The potential energy of a body when raised through height h is given by mgh. Each time, a normal rubber ball hits the floor, it loses one-fifth of its total energy and the rebound height is proportional to energy, so each bounce will rebound to four-fifth of the previous bounce.
Objective of pre-cooling isÂ
A soil has BD 1.35 Mg/mᶾ  and moisture content on weight basis is 10%. Find out moisture content on volume basis.
An area of 0.6 ha each of wheat and maize is irrigated daily with a discharge of 2000 litre per minute for a period of 15 hours. Each crop receives 8 cm...
The CO₂ receptor in C₃ plants is
Which of the following fodder crops is known for its gum-producing properties?
Ratooning is practiced in which of the following crops?Â
The genetic constitution of a character present in chromosome/nucleus is known as
Among the options given below, which of the following fishes possess electric organ?
Common bread wheat (2n = 42) is
Which citrus pest causes damage by consuming leaves from the margin and is most destructive during the nursery stage of the crop?
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