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Two loudspeakers on a concert stage are vibrating in phase. A listener is 57.5 m from the left speaker and 28.5 m from the right one. The listener can respond to all frequencies from 20 to 20 000 Hz, and the speed of sound is 343 m/s. What are the two lowest frequencies that can be heard noisily due to constructive interference?
Ice at 0 degrees Celsius and at a pressure of 1 atmosphere has a density of 916.23 kg m^-3 while water under these conditions has a density of 999.84 kg m^-3
A 36.0 kg uniform beam is attached to a wall with the hinge while its far end is supported by a cable such that the beam is horizontal.
A banked circular highway curve is designed for traffic moving at 67km/h. The radius of the curve is 209 m. Traffic is moving along highway at 48km/h on a rainy day.
Assume you weigh 160 lbs on earth. How far away from earth's surface would you have to go so that your weight dropped to 40 lbs
the average intensity of light emerging from a polarizing sheet is 0.764 wm2 and the average intensity of the
The focal length of a simple magnifier is 7.00 cm. Assume the magnifier to be a thin lens placedvery close to the eye. How far in front of the magnifier should an object be placedif the image is formed at the observer's near point, 25.0 cm infront of..
A crate of mass m = 92 kg is pushed at a constant speed up a frictionless ramp (? = 29°) by a horizontal force . The positive direction of an x axis is up the ramp, and the positive direction of a y axis is perpendicular to the ramp.
The force vector A has a magnitude of 98.0 newtons (N) and points due east. The force vector B has a magnitude of 111 N and points 71.1 ° north of east. Find the (a) magnitude and (b) direction of A - B. (Give the direction as a positive angle with r..
Released from rest at the same height, a can of frozen juice rolls to the bottom of the same hill. What is the translational speed of the frozen juice can while it reaches bottom.
A wire is moving perpendicularly through a magnetic field of strength 0.100 T with speed 60.0 m/s. what is the length of the wire
A 1500kg car slams the brakes on, its initial speed is 32m/s, How far does the car skid before stopping
A student throws a baseball at a large gong 61 m away and hears the sound of the gong 1.5404 s later. The speed of sound in air is 330 m/s. What was the average speed of the baseball on its way to the gong
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