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A car is accelerating while its horn is sounding. Just after the car passes a stationary person, the person hears a frequency of 1004.8 Hz. Sixteen seconds later, the frequency heard by the person has decreased to 1002.8 Hz. When the car is stationary, its horn emits a sound whose frequency is 9.90 102 Hz. The speed of sound is 343 m/s. What is the acceleration of the car?
Suppose a neutron, traveling to the right at 1000 m/s, strikes a proton moving upward at 500 m/s. Find the magnitude and direction of the deuteron velocity vector
A 10-kg cylinder rolls without slipping on a rough surface. At an instant when its center of gravity has a speed of 10 m/s, determine (a) the translational kinetic energy of its center of gravity,
two equal masses are attached to the ends of a spring whose force constant is k. With what frequency do they oscillate
A 4.25 bullet traveling horizontally with a velocity of magnitude 375 is fired into a wooden block with mass 1.10 , initially at rest on a level frictionless surface. The bullet passes by the block and emerges with its speed reduced to 110 .
A uniform rod of mass 3.05×10?2kg and length 0.350m rotates in a horizontal plane about a fixed axis through its center, What is the angular speed of the rod after the rings leave it
A spring with an unstrained length of 0.069 m and a spring constant of 2.7 N/m hangs vertically downward from the ceiling. What is the magnitude of the external electric field
A 0.80 kg ball and a 4.20 kg ball are connected by a 78.0 cm long massless, rigid rod. The structure rotates about its center of mass at 250 rpm. What is the rotational kinetic energy of the structure?
X-rays having an energy of 300 keV undergo Compton scattering from a target. The scattered rays are detected at 37.0° relative to the incident rays. find the energy of the recoiling electron
A 25.8-mW laser beam of diameter 1.99 mm is reflected at normal incidence by a perfectly reflecting mirror. Calculate the radiation pressure on the mirror
Make a drawing of a metal rod that has length 12cm and a total mass of 70g including two metal loops at both ends, which go around two metal poles. find the magnitude of the magnetic field in the region of the rod
An Escort and a Camaro traveling at right angles collide and stick together. What was the speed of the Camaro
A friend of yours is loudly singing a single note at 380Hz while racing toward you at 26.5m/s on a day when the speed of sound is 346m/s. What frequency does your friend hear if you suddenly start singing at 380Hz
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