An=200-turn solenoid having a length of l=25 cm and a diameter of 10 cm (r=5 cm) carries a current of i= 0.30 amp. (a) what is the magnetic field near the center of the solenoid? (b) what is the magnetic flux through an annular ring having an inside diameter of d=2.0 cm and an outside diameter of d=8.0 cm if the plane of the ring is perpendicular to the axis of the solenoid? solve using variables first and plug numbers at the end. hint: calculate the field of one loop as a function of z and then add up all the loops.

(1 point) match the differential equations and their vector valued function solutions. you may wish to multiply at least one solution out fully, to make sure that you know how to do it. you can get the other answers quickly by process of elimination and just multiply out one row element.

Which of the following situations is impossible? a) an object has velocity directed east and acceleration directed east. b) an object has zero velocity but non-zero acceleration. c) an object has constant non-zero velocity and changing acceleration. d) an object has velocity directed east and acceleration directed west. e) an object has constant non-zero acceleration and changing velocity.

Anonzero net force acts on a particle and does work. which one of the following statements is true? the kinetic energy of the particle changes, but the speed of the particle does not change. the kinetic energy of the particle does not change, but the speed of the particle does change. the kinetic energy of the particle changes, but the velocity of the particle does not change. the kinetic energy and the speed of the particle change, but the velocity of the particle does not change. the kinetic energy, speed, and velocity of the particle change.