Physics, 05.05.2020 14:57 NatalieKnows
Two identical forward-facing loudspeakers are 33.6 cm apart. They are both connected to a signal generator that makes them vibrate in phase at a frequency of 2.12 kHz (Take the speed of sound as 340 m/s. Consider nonnegative angles only. Enter your answers from smallest to largest, starting with the smallest answer in the first answer blank below. Enter NONE in any remaining unused answer blanks.) (a) At what angles (in degrees), measured from the perpendicular bisector of the line joining the speakers, would a distant observer hear maximum sound intensity? smallest value (b) At what angles (in degrees) would such an observer hear minimum sound intensity? smallest value
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Ahot-air balloon is 11.0 m above the ground and rising at a speed of 7.00 m/s. a ball is thrown horizontally from the balloon basket at a speed of 9.00 m/s. ignore friction and air resistance and find the speed of the ball when it strikes the ground.
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The dipole moment of the water molecule (h2o) is 6.17x10^-30 c.m. consider a water molecule located at the origin whose dipole moment p points in the +x-direction. a chlorine ion ( of charge-1.60x10^-19c , is located at x=3.00x10^-9m . assume that is much larger than the separation d between the charges in the dipole, so that the approximate expression for the electric field along the dipole axis can be used. a) find the magnitude of the electric force that the water molecule exerts on the chlorine ion. b) what is the direction of the electric force. -x-direction or +x-direction c) is this force attractive or repulsive?
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Two identical forward-facing loudspeakers are 33.6 cm apart. They are both connected to a signal gen...
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