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When an ambulance is stationary, the siren gives off a sound at a frequency of 500 Hz. In answering the following questions assume that the speed of the sound is 340 m/s. What will be the frequency of the siren when the ambulance moves at a speed of 35m/s toward an observer that is stationary on the side of the road?
The magnetic field produced by the solenoid in a magnetic resonance imaging (MRI) system designed for measurements on whole human bodies has a field strength of 7.33 T, and the current in the solenoid is 2.20 x 102 A. What is the number of turns per ..
A birds travels at 1.4 m/s with a fish in its claws, at 15 degrees below the horizontal. If it drops the fish that takes 1.8 seconds to land on the ground
A wave has an angular frequency of 190 rad/s and a wavelength of 2.6 m. Calculate (a) the angular wave number and (b) the speed of the wave.
A 10 kg mass is placed on a 25o incline and friction keeps it from sliding. The coefficient of static friction in this case is 0.580 and the coefficient of sliding friction is 0.520. The mass is given a shove causing it to slide down the incline. Tak..
How high is the sun above the horizon to a fisherman. What is the coefficient of kinetic friction between tires and pavement.
Two identical diverging lenses are separated by 23 cm. The focal length of each lens is -14 cm. find the final image distance relative to the lens on the right
The pupil of an eagle's eye has a diameter of 6.0 mm. Two field mice are separated by 0.010 m. How much time passes until the eagle sees the mice as separate objects
at a point p the electric field is 71 nc at 22 degrees clockwise from the positive x axis. a particle of mass 1.5 kg
A 1.0 kg block is attached to a spring with spring constant 18.0 N/m. While the block is sitting at rest, a student hits it with the hammer and almost instantly gives it a speed of 41.0 cm/s. What is the amplitude of the subsequent oscillations? The ..
A small plane is dropping emergency supplies to a fishing boat that has been blown out to sea. How far from the boat will the supplies land
An 11.90 V battery is connected to a series circuit containing a 6ohm resistor and a 2.30 H inductor. The circuit is established and current is 1.9833 A. How long will it take the current to reach 50 percent of its final value? Answer in units of s
A current of 1.5 A is flowing through a resistance of 18Ω. What is the voltage difference across their resistance
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