Physics, 12.12.2019 05:31 oofoofoof1
Abullet can travel at a speed of over 1000 m/s. when a bullet is fired from a rifle, the actual firing makes a distinctive sound, but people at a distance may hear a second, different sound that is even louder. explain the source of this sound.
Answers: 3
Physics, 22.06.2019 17:40, yoongnzl
Aspring is used to stop a 50-kg package which is moving down a 20º incline. the spring has a constant k = 30 kn/m and is held by cables so that it is initially compressed 50 mm. knowing that the velocity of the package is 2 m/s when it is 8 m from the spring and neglecting friction, determine the maximum additional deformation of the spring in bringing the package to rest.
Answers: 1
Abullet can travel at a speed of over 1000 m/s. when a bullet is fired from a rifle, the actual firi...
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