19.3 - Magnetic Force 1. A proton moves perpendicularly to a magnetic field that has a magnitude of 4.20 x 102T. What
is the speed of the particle if the magnitude of the magnetic force on it is 2.40 x 104 N?

Abatter hits the baseball a with an initial velocity of v0 = 110 ft/sec directly toward fielder b at an angle of 23° to the horizontal; the initial position of the ball is 2.2 ft above ground level. fielder b requires 0.44 sec to judge where the ball should be caught and begins moving to that position with constant speed. because of great experience, fielder b chooses his running speed so that he arrives at the “catch position” simultaneously with the baseball. the catch position is the field location at which the ball altitude is 8.4 ft. determine the velocity of the ball relative to the fielder at the instant the catch is made.

Asun-sized star will spend most of its lifetime as a: white dwarf red giant protostar main-sequence star

The passage that directs air to the lungs is called a. diaphragm. b. larynx. c. bronchi. d. pharynx.