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A bird is flying directly toward a stationary bird-watcher and emits a frequency of 1040 Hz. The bird-watcher, however, hears a frequency of 1130 Hz. What is the speed of the bird, expressed as a percentage of the speed of sound?
After working in a hospital for 6 months, you have been selected to head up the team to conduct hand-washing audits on all the nursing units.
a piece of wire is stretched from length l1 to a length of l2 step a and then from length l2 to length l3 step ba write
The lowest note on an organ is 16.4 Hz. What would be the pitch if the same organ pipe were closed? What is the shortest open organ pipe that will resonate at this frequency?
Three capacitors of 2.0, 9.0, and 15.0? F are joined together in parallel. What is their equivalent capacitance
The cutoff wavelength for a metal is found to be 300. nm. Calculate the maximum velocity of the emitted electrons
Orb spiders make silk with a typical diameter of 0.15 mm.A typical large orb spider has a mass of 0.50 g. by how much will the silk stretch
A 60 kg bicyclist rides his 9.8 kg bicycle with a speed of 16 m/s. What is the magnitude of the braking force
Just before they hit the ground, which ball, if either, has the larger kinetic energy? Explain.
A spring is resting vertically on a table. A small box is dropped onto the top of the spring and compresses it. What is the magnitude of the spring's displacement when the spring is fully compressed
A space vehicle is orbiting Earth in the circular orbit with a radius of 10,300,000 m. What is the minimum increase in speed that is essential for the vehicle to escape Earth's gravitational field? The mass of Earth is 5.97 x 10^24 kg and G = 6.67 X ..
A 137-cm-long wire is made by welding a 1.3-mm-diameter, 26-cm-long copper wire to a 0.31-mm-diameter, What is the resistance of the composite wire
A 1.5 meter tall woman stands 5 meter in front of a camera with a 4 centimeter focal length lens. Evaluate what is the size of the image formed on film
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