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if you move at 14m/s toward a 2300Hz source that is movingtoward you with a ground speed of 38m/s, what frequency do you hear? the speed of sound is 340m/s.
A thin spherical shell of mass 0.300 kg and diameter 0.190 m is filled with alcohol. It is then released from rest on the bottom of a pool of water. Find the acceleration of the alcohol filled shell as it rises toward the surface of the water.
Scientists in a laboratory produce a sound wave in a simulated environment (air) with a velocity of 448 m/s.
In a television set, electrons are accelerated from rest through a potential difference of 22 kV. Find the magnitude of the maximum magnetic force
a family wishes to purchase a heat pump for their home. The get-it-cheap co. sells a heat pump that has an operating performance 38% of the coefficient of performance of an ideal Carnot heat pump. Compute the overall coefficient of performance for ..
the drawing shows a golf ball passing through a windmill at a miniature golf course. the windmill has 10 blades and
A 0.500-kg mass on a spring has velocity as a function of timegiven by vx(t) = (3.60cm/s) sin[(4.71s-1)t -?/2]. What is the force constant of the spring
The pilot of an aircraft wishes to fly due west in a 47.7 km/h wind blowing toward the south. What should its speed relative to the ground be
A uniform electric field exists between two conducting plates separated by 1.7mm . A dust grain with charge 65 nC between the plates feels a 26N electric force, Find the electric field
A very long, straight wire has charge per unit length (lambda) . At what distance from the wire is the electric field magnitude equal to E ? How do you solve this problem?
What is magnitude of induced emf between the ends of beam
A small ferryboat is 4.00 m wide and 6.00 m long. When a loaded truck pulls onto it, the boat sinks an additional 4.20 cm into the river. What is the weight of the truck
Two thin beams are joined end-to-end as shown in the figure to make a single object. What is the gravitational torque on the object
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