Physics, 29.03.2021 01:50 victoria6929
The work done to a 300 gram baseball as it is hit is equal to 1800 J. When the ball is hit, 200 J
of energy is released as sound energy (not KE). The ball is hit at a 30° angle into the air and
travels as a projectile. For 5 bonus points, calculate the initial velocity of the ball as it leaves the
bat. For another 5 points, find the gravitational potential energy of the baseball when it reaches
the highest point in its flight (ignore air resistance)? You may need to incorporate what we know
about projectile motion.
Answers: 3
Physics, 22.06.2019 12:10
Awater slide of length l has a vertical drop of h. abby's mass is m. an average friction force of magnitude f opposes her motion. she starts down the slide at initial speed vi. use work-energy ideas to develop an expression for her speed at the bottom of the slide. then evaluate your result using unit analysis and limiting case analysis. express your answer in terms of the variables h, m, l, vi, f and appropriate constants. vf v f
Answers: 2
Physics, 22.06.2019 16:40
Which are true about beta reactions? there will be more than one answer. a. it has no change b. it doesn't change the mass of the number c. it has a mass of 0.0005 atoms d. it causes transmutation.
Answers: 3
Physics, 22.06.2019 19:00
Review multiple-concept example 7 in this chapter as an aid in solving this problem. in a fast-pitch softball game the pitcher is impressive to watch, as she delivers a pitch by rapidly whirling her arm around so that the ball in her hand moves in a circle. in one instance, the radius of the circle is 0.626 m. at one point on this circle, the ball has an angular acceleration of 66.1 rad/s2 and an angular speed of 12.6 rad/s. (a) find the magnitude of the total acceleration (centripetal plus tangential) of the ball. (b) determine the angle of the total acceleration relative to the radial direction.
Answers: 3
Physics, 22.06.2019 20:00
Which is the most accurate name for the covalent compound p2o3?
Answers: 2
The work done to a 300 gram baseball as it is hit is equal to 1800 J. When the ball is hit, 200 J
o...
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