Two solenoids are nested coaxially such that their magnetic fields point in opposite directions. treat the solenoids as ideal. the outer one has a radius of 20 mm, and the radius of the inner solenoid is 10 mm. the length, number of turns, and current of the outer solenoid are, respectively, 20.5 cm, 545 turns, and 4.53 a. for the inner solenoid the corresponding quantities are 18.9 cm, 331 turns, and 1.49 a. at what speed, v1,should a proton be travelling, inside the apparatus and perpendicular to the magnetic field, if it is to orbit the axis of the solenoids at a radius of 5.69 mm? v1 =/s and at what speed, v2, for an orbital radius of 16.9 mm? v2 =/s

Jason is a body builder. despite being more fit, he weighs more than his brother ryan, who is the same height. which is a possible reason? a. jason has more muscle mass than ryan does. b. jason has more body fat than ryan does. c. jason has more muscle mass and body fat than ryan does d. jason has less body fat than ryan does.

Assume that two of the electrons at the negative terminal have attached themselves to a nearby neutral atom. there is now a negative ion with a charge -2e at this terminal. what are the electric potential and electric potential energy of the negative ion relative to the electron? the electric potential and the electric potential energy are both twice as much. the electric potential is twice as much and the electric potential energy is the same. the electric potential is the same and the electric potential energy is twice as much. the electric potential and the electric potential energy are both the same. the electric potential is the same and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron. the electric potential is twice as much and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron.

What ions are formed when hcl dissolves in water?