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A scientist is running at speed, u, toward a large, smooth wall while holding a tuning fork that vibrates at frequency, f. In terms of u, f, and v (the speed of sound), what is the frequency the scientist hears reflected from the wall, and what is the beat frequency she hears? Hint: there are two Doppler shifts to consider -- the wall is first an observer, and then it is a source reflecting at the frequency it "hears".
Two 30 kg masses have velocities (in m/s) of vector v 1 = 10 i(hat) - 20 j(hat), Determine the velocity of the center of mass of the system
A scaffold of mass 43 kg and length 6.5 m is supported in a horizontal position by a vertical cable at each end. What is the tension in the nearer cable
A single circular loop piece of copper wire has a radius (r) of 12 cm. What is the average electrical energy dissipated in the resistance of the wire
A viewing window in the Atlanta aquarium is 50 inches wide and 50 inches high. what is the outward force on the window
A dog sits 1.53-m from the center of a merry-go-round with an angular speed of 1.65 rad/s. If the magnitude of the force that maintains the dog's circular motion is 38-N, what is the dog's mass.
Compute the distance of two point's p1 and p2 in the x-y plane with the following Cartesian coordinates: p1= (-5m, +8m), p2= (+3m, +2m). Draw the position vectors into appropriate-points.
When a clock reads 3 s, a cart's velocity in the positive x direction reads 5m/s, What is the magnitude in m/s^2 of the acceleration of the cart
Evaluate maximum altitude?
What potential is generated on a plane's wings when it flies through the earth's magnetic field
The sun radiates energy at a rate of 3.86*10^26 W. Its radius is 7.0*10^8m. what is the intensity of solar radiation at the top of the earths atmosphere
A 2 meter wire carrying 0.9 A of current is at a 90 degree angle to a magnetic field. compute the strength of the field
What is the volume flow rate through the smaller pipe? answer in m^3/ second.
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