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A delivery driver is driving at 35 km/hr towards a siren havinga frequency of 350 Hz. The temperature of air is 25 degrees Celsius. Find the frequency heard by the person approaching the siren.
A rope, under a tension of 294 N and fixed at both ends, oscillates in a second-harmonic standing wave pattern, find the length of the rope and the speed of the waves on the rope
The ends of a thin bar are maintained at differenttemperatures. The temperature of the cooler end is 13°C, find the length of the bar
A flight controller determines that an airplane is 32 mi south of him. Half an hour later, the same plane is 48 mi northwest of him. termine the magnitude of its velocity during this time
Consider a binary star system in which the two stars have masses M1 and M2 and the stars move on circular orbits separated by a distance R
Find the recoil speed of the rifle. A 650-N force acts in a northwesterly direction. A second 650-N force must be exerted in what direction so that the reultant of the two forces points westward? Illustrate your answer with a vector diagram.
The magnetic flux that passes through one turn of a 18-turn coil of wire changes to 2.62 from 9.44 Wb in a time of 0.0336s. What is the resistance of the wire
If the acceleration of an object is constant, the value of the acceleration may be determined by any of the following methods except: Dividing the change in the object's velocity by the time interval over which the velocity changed. Dividing the aver..
Air (a diatomic ideal gas) at 26.5°C and atmospheric pressure is drawn into a bicycle pump (see figure below) that has a cylinder with an inner diameter of 2.50 cm and length 63.0 cm. The down stroke adiabatically compresses the air, which reaches a ..
A uniform 240 N ladder rests against a perfectly smooth wall, making a 40.0 angle with the wall. Find the normal forces that the wall on the ladder
Standing at a crosswalk, you hear a frequency of 540 Hz from thesiren of an approaching ambulance. Determine the ambulance's speed from these observations
Suppose Colossus throws Wolverine at an angle of θ = 23.0o with respect to the ground (see figure below). Wolverine is d = 2.26 m above the ground when he is released, and he leaves Colossus's hands with a speed of vi = 16.0 m/s. Using conservatio..
a 90 kg sofa sits stubbornly on the wrong side of your living room. if the coefficient of static friction between the
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