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Making an observation nest for ants
An observation nest for the study of the life story of ants can simply be made as follows.
Make a wooden U from three 30 cm lengths of wood 1.5 cm square. Mount this vertically in a suitable wooden base. Now cut rectangles of glass 30 cm x 33 cm and clamp them on every side of the U with rubber bands or some sort of metal clip
It is the phenomenon of emission of electrons from the surface of metals, when light radiations (Electromagnetic radiations) of suitable frequency drop on them. The emitted electro
A bob hanged to astrirg in a box .it is displaced to an agle of 45 .then fid the acceleration of the box at this moment. Ans) gsin45,that is 10/1.4142.as it would have only tangen
How is the mutual inductance of a pair of coils affected when? (i) Separation among the coils is enhanced? (ii) The number of turns of each coil is enhanced? (iii) A thin
Q. Describe the isotopes? Answer:- An atom of an element that has a diverse number of neutrons in its nucleus to other atoms of the element.
A cheetah can accelerate from rest to a speed of 27.8 m/s in 5.20 s. The cheetah can carry this speed for 9.70 s before it quickly runs out of energy and stops. What distance does
The coherent & rationalized system of units, derived through the m.k.s. system (that itself is derived from the metric system) in common employ in physics today.
.how can we prove that sn=u+a(1/2)
Suppose that we have a monochromatic non-diverging beam of x rays that are incident on a slab of Pb. Inside the Pb plate there are three apertures (openings) that allow the beam
Q. What is artificial radioactivity? The phenomenon by which still light elements are made radioactive by artificial or induced methods is called artificial radioactivity. α
The characteristic of a body by virtue of which the body takes its real configuration when external deforming forces are removed is called as elasticity.
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