Suppose a baseball player steps to the plate with the intention of trying to "coax" a base on balls by never swinging at a pitch. the umpire, of course, will necessarily call each pitch either a ball (b) or a strike (s). what outcomes make up the event a, that a batter walks on the sixth pitch? (note: a batter "walks" if the fourth ball is called before the third strike.) larsen, richard j.; marx, morris l.. an introduction to mathematical statistics and its applications (page 19). pearson education. kindle edition.

Imagine you are riding on a yacht in the ocean and traveling at 20 mph. you then hit a golf ball at 100 mph from the deck of the yacht. you see the ball move away from you at 100mph, while a person standing on a near by beach would observe your golf ball traveling at 120 mph (20 mph + 100 mph). now imagine you are aboard the hermes spacecraft traveling at 0.1c (1/10 the speed of light) past mars and shine a laser from the front of the ship. you would see the light traveling at c (the speed of light) away from your ship. according to einstein’s special relativity, how fast will a person on mars observe the light to be traveling? a) 0.1c (1/10 the speed of light) b) c (the speed of light) c)1.1c (c+0.1c)

In a system, when potential energy decreases, then entropy also decreases. true false

Which of these is constant for all types of electromagnetic radiation in a vacuum? select one: a. wavelength b. frequency c. photon energy d. amplitude e. velocity