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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-decay When a radioactive nucleus disintegrates by release an α-particle the atomic number decreases by two and mass number decreases by four.
Instance Radium (88Ra226) is converted to radon (86Rn222) due to α-decay
88Ra226 → 86Rn222 + 2He4
what is dynamics
Q. What is a fuse wire? i) Fuse wire is an alloy of lead 37% as well as tin 63%. It is linked in series in an electric circuit. ii) It has high resistance as well as low mel
A string of cross section 2cm2 is doubled in length by the application of a longitudinal force 2*10 5 dynes. The youngs modulus is
What are "Overtones" and "Harmonics" ? How are they build in an open pipe? Derive the mathematical equations for the frequencies of the harmonics produced in an open pipe.
Force is.......?
The force applied at A is P30 Newton's, and P31 and P32 are dimensions in mm. A mechanic uses his left hand to support the wrench at point B. Determine the upward force required a
Longitudinal Waves: The traveling waves in which particles of the elastic medium vibrate about back and forth along the direction of propagation of waves are called longitudina
A 415V 3-phase a.c. motor has a power output of 12.75kW and operates at a power factor of 0.77 lagging and with an ef?ciency of 85%. If the motor is delta-connected, verify
Illustrate Examples of systems out of equilibrium Examples of systems out of equilibrium: A) a stone thrown upwards that is at its highest point; B) a plane diving downwa
Necessity Of A Starter For D.C Motors When motor is at rest, then N=0 and due to Eb is directly proportional to N, so At begin E b = zero Thus armature current at t
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