In a mass spectrometer, an ion of charge, q, and mass, m, moving in a path of radius, r, in a field of flux density, B, has a speed of
Increasing the frequency of a sound wave produces a sound with
A planet has mass, M, and radius R, If the universal gravitational constant is G, what is the expression for the escape velocity of an object on the planet?
An atom in an excited state is one whose
The most appropriate value of fuse for a kettle rated 220 V, 1.06 kW is
