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Loudspeakers A and B are vibrating in phase and are playing the same tone, which has a frequency of 430 Hz. They are set up as in the figure, and point C is located as shown there. However, the distance between the speakers and the distance between speaker B and point C have the same value d. The speed of sound is 343 m/s. What is the smallest value of d, such that constructive interference occurs at point C?
A 20.0-kg box rests on a horizontal surface. The coefficient of static and kinetic friction between the box and the surface are 0.30 and 0.10 respectively
If you hold a horizontal metal bar several centimeters above the ground and move it through grass, each leaf of grass bends out of the way. How can it exert enough force on a leaf of grass to shear it off
A compass originally points North; at this location the horizontal component of the Earth's magnetic field has a magnitude of 2e-5 T. What is the magnetic dipole moment of the bar magnet
A floodlight with a mass of 46.00 kg is used to clarify the parking lot in front of a library. The floodlight is supported at the end of horizontal beam that is hinged to a vertical pole. A cable that makes an angle of 29 degrees with the beam is att..
a 1.70 kg block and a spring with a force constant of 955 nm are oriented vertically as shown below. initially the
A copper wire of length 23.0 cm is in a magnetic field of 0.310 T. If it has a mass of 16.0 g, What is the minimum current through the wire
The reflected sound is then mixed with the transmitted sound and 90 beats per second are detected. The speed of sound in body tissue is 1480.
a massive ring radius a and mass m lies on the xy plane. calculate the force f on a test mass m at position z on
The gauge pressure at the bottom of a reservoir is 5.0 times what it is at a depth of 2.1 m. How deep is the reservoir
a how many fringes appear between the first diffraction-envelope minima to either side of the central maximum for a
the membrane surrounding a living cell consists of an inner and an outer wall that are separated by a small space. Assume that the membrane acts like a parallel plate capacitor in which the effective charge density on the inner and outer walls has..
A box is sliding with a speed of 4.50 m/s on ahorizontal surface when, at point P, it encounters a roughsection. What is the coefficient of friction at the stopping point
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