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An isotope of iodine (Z = 53) is used to treat thyroid conditions.
Its mass number is 131.
How many neutrons are in its nucleus?
131 - 53 = 78 neutrons
The atomic weight of an element is double its atomic number. If there are four electrons in 2P orbital, the element is : (1) C (2) N (3) O
a. Measure the force among two linear, parallel, long conductors carrying currents in opposite direction. b. Measure self inductances and mutual inductances among two co-axial s
examples of unlike parallel forces
KINEMATICS I 1. x(t) is called displacement and it denotes the position of the body at a particular time. If the displacement is positive then that body is to the right of
(i) On the average, particles are separated by a distance of the order of 10-10 m and exert a force of attraction of the order of 10-11 N on each other. (ii) The force of atta
Q. Escape Velocity An object will conquer the force of gravity when its kinetic energy in the direction away from earth exceeds its potential energy. We find the smallest kinet
What is randomized common ends? When some light guides are bundled together in a single common end this becomes a physical impossibility to get the same level of light in each
Tiger Woods can hit a golf ball with 55 N of force. How hard does the ball hit back on the club? (a) more than 55 N of force, (b) less than 55 N of force, (c) exactly 55 N of force
Wires A as well as wire B are both made out of copper. Both of wires have the same length. The diameter of wire B is doubles that of wire A. Answer: Resistivity is a charac
derive an expression for drift velocity
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