The kinetic and potential energies are both different forms of the same basic quantity, i.e. mechanical energy. Total mechanical energy of a body is the sum of the kinetic energy and potential energy may change into kinetic energy and vice versa, but the total energy remains constant. Mathematically,
Pteropsida is divided into three classes (i) class filicineae (ii) class Gymne spermae (iii) class angiospermae. The class filicineae contains seedless plants with foliar sporangia (sporangia attached to fronds fig. 9.17). The leaves are...
Consider a body of mass m at rest, at a height h above the surface of the earth as shown in Fig. 4.11. At position A, the body has P.E. – mgh and K.E....
In sphenopsida (Horsetails), the sporophyte is differentiated into root, stem and leaves. The leaves may be expanded or scale-like and are always arranged in whorls. Plants belonging to this group are also called arthorophytes...
Escape velocity It is our daily life experience that an object projected upward comes back to the ground after rising to a certain height. This is due to the force of gravity acting downward....
The negative sign indicates that the work has to be done on the body from point 1 to 2 because displacement is opposite to gravitational force. Putting the value of ∆r, we get Similarly...
Absolute potential energy The absolute gravitational potential energy of an object at a certain position is the work done by the gravitational force in displacing the object from that position to infinity where the...
The potential energy is possessed by a body because of its position in a force field e.g. gravitational field or because of its constrained state the potential energy due to gravitational field near the surface of the earth at a height H is given by the formula
Lycopsida The plants of lycopsida have sporophytes differentiated into roots, stem and true leaves. The leaves are small and single-veined, they are also called microphylls. The arrangement of leaves is spiral or opposite. The...
In the definition of work , it is not clear, whether the same amount of work is done in own second or in one hour. The rate, at which work is done, is often...
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Two Table are Design and Datasheet View
21 Jan, 2014
