Enzyme-based biosensor may have zero hysteresis? True or false

What type of nuclear decay causes the atomic number of an element to increase by 1?

Atomic nuclei of almost all elements consist of

Amoving electron has kinetic energy k1. after a net amount of work w has been done on it, the electron is moving one-quarter as fast in the opposite direction. (a) find w in terms of k1. (b) does your answer depend on the final direction of the electron's motion?