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Two point-source loudspeakers are a certain distance apart, and a person stands 12.0 m in front of one of them on a line perpendicular to the baseline of the speakers. If the speakers emit identical 1000.0-Hz tones, what is their minimum nonzero separation so that the observer hears little or no sound? (Take the speed to be exactly 340 m/s.)
A body is suspended vertically from an ideal spring of spring constant 3.1 N/m. The spring is initially in its relaxed position. What is the maximum kinetic energy of the body
An electron is observed traveling at a speed of 2.38 107 m/s parallel to an electric field of magnitude 11,460 N/C. How far will the electron travel before coming to a stop
An adventurous archaeologist crosses between two rock cliffs by slowly going hand over hand along a rope stretched between the cliffs. He stops to rest at the middle of the rope (See the figure). The rope will break if the tension in it exceeds 3.00×..
A person wears a hearing aid that uniformly increases the sound level of all audible frequencies of sound by 27.8 dB. What is the intensity delivered to the eardrum
Two converging lenses (f1 = 8.50 cm and f2 = 5.90 cm) are separated by 17.4 cm. The lens on the left has the longer focal length. Locate the final image relative to the lens on the right
In an adiabatic centrifugal compressor atmospheric air at 15 degree Celsius is compared to 600kPa pressure. Find the specific compression work and the efficiency of the compressor
A cyclotron particle accelerator (sometimes called an "atom smasher" in the popular press) is a device for accelerating charged particles, How fast are these protons moving when they hit the tumor
A 1.5 kg mass attached it spring with a force constant of 20.0 N/m oscillates in horizontal, frictionless track. At t=0, Determine the total energy of the oscillating system
At one instant a bicyclist is 25m due east of a park's flagpole, going due south with a speed of 8 m/s. Then, 11 s later, the cyclist is 65m due north of flagpole, going due east with a speed of 10 m/s.
If 40.7 kW is to be transmitted to consumers over two 0.107 %u2126 lines, estimate how much power is saved if the voltage is stepped up from 115 V to 1150 V
A 2.0 cm tall object is placed in front of a mirror. A 1.0 cm tall upright image is formed behind the mirror, 150 cm from the object. find Is the image erect or inverted
A metal slug is dropped from a height of 1/20 RM above the moon's surface. Find the speed with which the slug strikes the moon's surface
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