Physics, 04.02.2020 17:48 cesarcastellan9
Apitcher throws a 0.144-kg baseball toward the batter so that it crosses home plate horizontally and has a speed of 42 m/s just before it makes contact with the bat. the batter then hits the ball straight back at the pitcher with a speed of 47 m/s. assume the ball travels along the same line leaving the bat as it followed before contacting the bat. (a) what is the magnitude of the impulse delivered by the bat to the baseball? 12.816 n · s (b) if the ball is in contact with the bat for 0.0046 s, what is the magnitude of the average force exerted by the bat on the ball? kn (c) how does your answer to part (b) compare to the weight of the ball? fav mg =
Answers: 2
Physics, 21.06.2019 16:00
The rigid beam is supported by the three suspender bars. bars ab and ef are made of aluminum and bar cd is made of steel. if each bar has a cross-sectional area of 450 mm2, determine the maximum value of p if the allowable stress is (σallow)st = 200 mpa for the steel and ( σallow)al = 150 mpa for the aluminum. est = 200 gpa and eal = 70 gpa.
Answers: 2
Physics, 21.06.2019 21:30
Write the equation for momentum, first using symbols for the variables, then using words for the variables.
Answers: 2
Physics, 21.06.2019 23:20
Imagine you had to physically add electrons, one at a time, to a previously neutral conductor. you add one electron very easily, but the second electron requires more work. in your initial post to the discussion, explain why this is. also, what happens to the work needed to add the third, fourth, fifth, and subsequent electrons
Answers: 1
Physics, 22.06.2019 14:30
In order to do work, the force vector must be question 1 options: in a different direction than the acceleration vector. in a different direction than the displacement vector. in the same direction as the displacement vector and the motion. in the same direction as the acceleration vector.
Answers: 1
Apitcher throws a 0.144-kg baseball toward the batter so that it crosses home plate horizontally and...
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