Physics, 16.12.2021 20:50 pchisholm100
You have been hired to design a spring-launched roller coaster that will carry two passengers per car. The car goes up a 13-m-high hill, then descends 18 m to the track's lowest point. You've determined that the spring can be compressed a maximum of 2.5 m and that a loaded car will have a maximum mass of 420 kg. For safety reasons, the spring constant should be 14 % larger than the minimum needed for the car to just make it over the top.
A. What spring constant should you specify?
Express your answer to two significant figures and include the appropriate units.
B. What is the maximum speed of a 330 kg car if the spring is compressed the full amount?
Express your answer to two significant figures and include the appropriate units.
Answers: 2
Physics, 21.06.2019 15:10, sjsmith21
What if? if the temperature near the cliff suddenly falls to 0°c, reducing the speed of sound to 331 m/s, what would the initial speed of the rock have to be (in m/s) for the soccer player to hear the sound of the splash 2.90 s after kicking the rock?
Answers: 3
Physics, 22.06.2019 09:30, gemmaestelle
Along the line connecting the two charges, at what distance from the charge q1 is the total electric field from the two charges zero? express your answer in terms of some or all of the variables s, q1, q2 and k =14ï€ïµ0. if your answer is difficult to enter, consider simplifying it, as it can be made relatively simple with some work.
Answers: 3
Physics, 22.06.2019 16:00, ggdvj9gggsc
Suppose a soccer ball is kicked from the ground at an angle 20.0º above the horizontal at 8.00 m/s. the y-velocity is determined to be 2.74 m/s. how long will the ball be in the air? assume the ball lands at the same height at which it was kicked.
Answers: 2
You have been hired to design a spring-launched roller coaster that will carry two passengers per ca...
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