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Suppose that sound is emitted uniformly in all directions by a public address system. The intensity at a location 25 m away from the sound source is 3.00 10-4 W/m2. What is the intensity at a spot that is 70 m away?
A 1.50 kg snowball is fired from a cliff 13.0 m high with an initial velocity of 14.0 m/s, directed 41.0° above the horizontal. If that gravitational potential energy is taken to be zero at the height of the cliff, what is its value when the snowbal..
A radio tuner is built by connecting an L=0.41mH inductor and variable capacitor in series with an antenna. The driving voltage is provided by the radiowaves that pass through the antenna, and the total internal resistance of the circuit is R=1.2O..
Illustrate what management's role in addressing these challenges. Illustrate what type of information technology would increase production?
A baseball is thrown up from ground level at a speed of 256ft/s: What is the acceleration at the highest point in ft/s2
Give the force exerted on the bag, to validate your reply.
A small button placed on a horizontal rotating platform with diameter 0.310m will revolve with the platform, How far from the axis can the button be placed, without slipping, if the platform rotates at 59.0rev/min
Water flows through a pipe with circular cross section. The fluid has a radius of 5.0 cm and flows at 2.0m/s. The output has a radius of 2.50 cm. find the output velocity.
The lens of a slide projector with a focal length of 90.0 mm projects a slide onto a screen that is 15.0 m away. How far from the lens must the slide be placed to form a sharp image on the screen?(in cm)
Suppose you drop a feather and a steel ball of equal masses (0.010 kg) at the same time from a height of 1.9 m and you are told that the feather hits the floor 4.5 s after the steel ball. Estimate the feather's drag coefficient
A stone is dropped at t = 0. A second stone, with 6 times the mass of the first, is dropped from the same point at t = 56 ms. How fast is the center of mass of the two-stone system
Two violin strings are tuned to the same frequency, 294 rm/hrz. What will be the beat frequency heard
q1. an object hangs from a spring balance. the balance indicates 40 n in air and 30 n when the object is submerged in
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