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You bike at 12.1 m/s directly away from your neighbor\'s trumpet sound and toward the sound of another neighbor\'s trombone and find that you hear both instruments at exactly the same pitch. The trumpeter is practicing her middle C, at a frequency of 262 Hz. What frequency is the trombonist producing? The speed of sound in air is 343 m/s.
a substance has a density of p=200kg/m3. what is the mass of the box full of substance?
A flat piece of glass covers the top of a vertical cylinder that is completely filled with water, What is the smallest value of the incident angle theta_a for which none of the ray refracts into the water
The ems of an AC circuit has an rms value of 120V. What is the maximum positive emf
What is the end daughter nucleus of a Th-234 nucleus that undergoes a series decay of 4 alpha decays followed bt one beta decay. Determine the energy produced in the following reaction
A cat rides a merry-go-round while turning with uniform circular motion. At time t1 = 2.00 s, the cat's velocity is v1 = (3.50) + (4.00 m/s), find the magnitude of the cat's centripetal acceleration
How far will it travel before becoming airborne
The gun on a battleship is at the surface of the water, and fires a 500 kg projectile with a muzzle velocity of 400 m/sec, What is the maximum range
ou place it in water and it displaces a volume of 20 cubic centimeters of water. What is the hardness of this mineral? describe your answer.
A child and sled with a combined mass of 49.0 kg slide down a frictionless slope. what is the height of the hill
A ball is thrown directly downward with an initial speed of 8.50 m/s, from the height of 29.5 m. After what time interval does it strike the ground.
A wheel with rotational inertia .146 kg-m2 turns through 40 rev as it slows down from an angular speed of 1.5 rad/s to a stop, what is the angular deceleration
ocean waves with wavelength 1.2 m and period 1.5s are moving past a pier. a boy runs along the pier, in the direction opposite to the motion of the wave, at 3.5 m/s. how many wave crests pass the boy each second?
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