Baseball is hit into the air at an initial speed of 37.2 m/s and an angle of 49.3 ° above the horizontal. at the same time, the center fielder starts running and catches the ball on its way down when the ball is 0.873 m above the level at which it was hit. if the center fielder is initially 1.09 x 102 m from home plate, what must be his average speed?
Answers: 3
Physics, 22.06.2019 05:00, masie03
Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct
Answers: 1
Physics, 22.06.2019 18:30, Jasten
Arailroad car collides with and sticks to an identical railroad car that is initially at rest. after the collision, the total kinetic energy of the two cars is a) the same as before. b) half as much as before. c) one third as much as before. d) one fourth as much as before. e) twice as much as before.
Answers: 1
Baseball is hit into the air at an initial speed of 37.2 m/s and an angle of 49.3 ° above the horizo...
Mathematics, 19.01.2021 23:20
Mathematics, 19.01.2021 23:20
Mathematics, 19.01.2021 23:20
Mathematics, 19.01.2021 23:20