Physics, 18.09.2019 00:00 fredvales19
Two spectators at a soccer game in montjuic stadium see, and a moment later hear, the ball being kicked on the playing field. the time delay for spectator a is 0.231 s and for spectator b is 0.128 s. sight lines from the two spectators to the player kicking the ball meet at an angle of 90°. how far are (a) spectator a and (b) spectator b from the player? (c) how far are the spectators from each other? (take the speed of sound to be 343 m/s.)
Answers: 3
Physics, 22.06.2019 07:30
30 points - when can a theory be modified if a new type of technology allows for new observations that raise new questions? a. immediately, while the questions about the theory are being asked b. after new hypotheses related to the theory are tested in experiments c. only after the new observations disprove all parts of the theory d. while scientists begin to think about how the theory could improve
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Physics, 22.06.2019 09:00
In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final
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Physics, 22.06.2019 14:00
Estimate the change in the gibbs energy and molar gibbs energy of 1.0dm3 of octane when the pressure acting on it is increased from 1.0 atm to 100 atm. the mass density of octane is 0.703 g cm−3
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Physics, 22.06.2019 14:30
What is the relationship between the direction of motion of the balloon and the wind currents
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Two spectators at a soccer game in montjuic stadium see, and a moment later hear, the ball being kic...
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