In a photographic emulsion the track of a proton moving perpendicular to a magnetic field of 0.60T is observed to be a circular arc of radius 1.2cm. What is the kinetic energy of the proton in electronvolts?​

Avertical clean glass piezometer tube has an inside diameter of d = 1 mm and is used to measure pressure in a horizontal pipe carrying water as shown. due to pressure in the pipe, the water at 20c rises into the tube to a height h. if the water pressure in the pipe is p = 500 pa gauge, estimate the height h: (a) without considering surface tension (b) with surface tension (capillary) effects. the contact angle  can be assumed at 30 deg