How many beta particle(s) are emitted in the radioactive decay of 198 79 A u ← 198 80 H g ? Posted on:
A 10μC charge moves with a velocity of 1.0×105ms−1 at right angle to a uniform magnetic field of flux density 5.0×10−4T. Calculate the force on the charge. Posted on:
Two magnets are used to magnetize a soft iron bar PQ as illustrated in the diagram given. The correct polarity at P and Q respectively Posted on:
When ammonium chloride is dissolved in water in a test tube, the tube feels colder showing that Posted on:
