Physics, 22.10.2019 19:50 IUlawyer4535
Astone is thrown at an angle of 30.0 degrees above the horizontal from the top edge of a cliff with an initial speed of 15 m/s. a stopwatch measures the stoneās trajectory time from the top of the cliff to the bottom at 6.30 s. what is the height of the cliff? (assume no air resistance and that a = g = 9.81 m/s .)
Answers: 3
Physics, 21.06.2019 19:40
Wo audio speakers are placed on a vertical rail. speaker a is placed at head-level while speaker b is place at some variable height, \delta yĪ“y, above speaker a. both speakers receive simultaneous input from a sine-wave generator so the speakers each produce a pure sinusoidal sound wave with a wavelength of 0.531 meters. calculate the lowest height that speaker b can be placed above speaker a to produce a minimum of sound heard by person standing \delta x = 7.86Ī“x=7.86 meters directly in front of speaker a.
Answers: 2
Physics, 22.06.2019 05:50
Astudent wears sunglasses to her read a book more easily which wave interaction occurs as light passes from the air into the plastic lenses? a polarization b.refraction c.diffraction d. interference
Answers: 1
Physics, 22.06.2019 15:20
What component of earthās atmosphere exists entirely as a result of photosynthesis?
Answers: 2
Astone is thrown at an angle of 30.0 degrees above the horizontal from the top edge of a cliff with...
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