Physics, 06.10.2019 03:00 hiihihihij
Imagine that you are standing at a wishing well, wishing that you knew how deep the surface of the water was. cleverly, you make your wish. then you take a penny from your pocket and drop it into the well. exactly three seconds after you dropped the penny, you hear the sound it made when it struck the water. if the speed of sound is 343 m/s, how deep is the well? neglect any effects due to air resistance. (assume that the sound was heard exactly 3 s after the penny was dropped.)
Answers: 3
Physics, 22.06.2019 02:30, erinolson07cats
The boy of mass 30 kg is at r1= 2 meters from the fulcrum. of the girl is 45 kg, at what r2 must she sit so that they are balanced ?
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Physics, 22.06.2019 05:30, 444x4gang4
Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is
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