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The siren on an ambulance is emitting a sound whose frequency is 2050 Hz. The speed of sound is 343 m/s.
(a) If the ambulance is stationary and you (the "observer") are sitting in a parked car, what are the wavelength and the frequency of the sound you hear?
(b) Suppose that the ambulance is moving toward you at a speed of 26.9 m/s. Determine the wavelength and the frequency of the sound you hear.
(c) If the ambulance is moving toward you at a speed of 26.9 m/s and you are moving toward it at a speed of 11.0 m/s, find the wavelength and frequency of the sound you hear.
on a frictionless horizontal surface a 1.50 kg mass traveling at 3.50 m/s collides with and sticks to a 3.00 kg mass that is intially at rest. What will be the maximum compression of the spring
A wheel of radius 1.5m rotates at a constant angular velocity. A point at the edge of the wheel experiences centripetal acceleration of 1.2m/s^2. What is the linear speed of that point
A bicycle is moving at a speed v = 4.26 m/s. If the radius of the front wheel is 0.450 m, how long does it take for that wheel to make a complete revolution.
define the magnitude of the acceleration of the block. What is the electric ?eld strength.
consider a thin wire bent into the shape of a ring of radius of 10 cm that carries a steady 2.0-A current
Unpolarized light is incident on a series of two Polaroid sheets. The intensity of the light emerging from the second sheet is 18.4 percent of the intensity of the light incident on the first sheet. Find out the angle between the transmissions axe..
You hang the rod vertically and attach a 74 kg mass to the bottom, and you observe that the bar becomes 1.74 cm longer. From these measurements, it is possible to conclude the stiffness of one interatomic bond in titanium.
The efficiency of a Carnot engine is 27%. The engine absorbs 795 J of heat per cycle from a hot reservoir at 499 K. Determine the heat expelled per cycle and the temperature of the cold reservoir.
A semicircle of radius a is charged.positive charge +Q is distributed uniformaly around the left half of the semicircle, what are the magnitude and the direction of the electric field
A piece of luggage is being loaded onto an airplane by way of an inclined conveyor belt. calculate the work done on the bag by the conveyor belt
A railroad car of mass 40900 kg moving at 3.35m/s collides and couples with two railroad cars,each of the same mass as the single car and moving in the same direction at 1.53m/s. what is the speed of three cars after the collision.
Light from the sun is incident on the surface of a pond with a smooth surface. The light strikes the surface at the angle of 30 to the surface and is partially reflected. What is the angle of reflection for the reflected portion? What is an angle of ..
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