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The siren on an ambulance is emitting a sound whose frequency is 2350 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 26.3 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 26.3 m/s and you are moving toward it at a speed of 16.0 m/s, find the wavelength and frequency of the sound you hear.
A spherical shell has an outside radius of 2.6cm and an inside radius of a. The shell wall has uniform thickness and is made of a material with density 4.70g/ cm3. The space inside the shell is filled with a liquid having a density of 1.23g/cm3.
A 1.07 µF capacitor is connected in series with a 1.90 µF capacitor. Find the equivalent capacitance of the two capacitors
The particles in the nucleus of an atom are approximately 1.00×10?15 apart, while the electrons in an atom are about 1.00×10?10 from the nucleus. How many pounds would the force be
Find the direction of the net force exerted on the Sun. Give the direction relative to the line connecting the Sun and the Moon
Establish the average net force
A flash light is at the bottom of a 2m deep pool. Find the critical angle of incidence for the light that is trapped or reflected back
A certain traffic light is yellow for 2.70 s before it turns red. To come to a complete stop before reaching the intersection, what is the minimum distance you can be from the light when it turns yellow
You find an unlabeled box of fine needles, and want to determine how thick they are. A standard ruler won't do the job, since all you can tell is that each needle is less than a millimeter thick.
A ball is launched with an initial velocity of 24.9 m/s at a 45° angle from the top of a cliff that is 9.00 m above the water below. What is the balls speed when it hits the water
A child on the merry-go-round is moving with a speed of 1.15 m/s when 1.10 m from the center of the merry-go-round.
The flywheel of an old steam engine is a solid homogeneous metal disk of mass M = 131 kg and radius R = 80.5 cm. Calculate the work done by the torque during this time
Electrons which were initially at rest were subjected to a continuous force of 2×10-12 newton along the entire length of two miles (one mile is 1.6 kilometers) and reached speeds very near the speed of light.
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