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A motorcycle and a police car are moving toward one another. The police car emits sound with a frequency of 514 Hz and has a speed of 30.0 m/s. The motorcycle has a speed of 13 m/s. What frequency does the motorcyclist hear?
Assume you are a scuba diver preparing for a 30m dive into sea water of density 1025 kg/m3, what are the gauge and absolute pressures in Pa you experience at a depth of 30 m in the sea
If the mass of both weights is 225 gm, the first mass is located 20 north of east, the second mass is placed 20 south of east, and the transducer sensitivity is 0.5 volts/Newton, how large a voltage do you expect to measure? suppose the transducer..
A 1.5 m cylinder of radius 1.1 cm is made of a complicated mixture materials. Its resistivity depends on the distance x from the left and obeys the formula p(x)=a+bx^2, What is the resistance of the rod
An "extreme" pogo stick utilizes a spring whose uncompressed length is 34 cm and whose force constant is 1.2×104 N/m. Calculate her upward acceleration, in g's at that moment
What is the direction of this velocity. What is the magnitude of the velocity.
The reflected sound is afterwards mixed with the transmitted sound, and 85 beats per second are detected. The speed of sound in body tissue is 1520m/s. compute the speed of the fetal heart wall at the instant this measurement is made.
At t = 0, a particle leaves the origin with a velocity of 9 m/s in the positive y direction and moves in xy plane with a constant acceleration of (-2 i -4 j) m/s2. At t = 1 s, what is the velocity of particle in the x direction.
A cylindrical copper cable carries a current of 1290 A. There is a potential difference of 1.60 10-2 V, What is the radius of the cable
An object is suspended on a frictionless inclined plane by a rope parallel to the incline, as illustrated above. what is the weight of the object
The volume control on a surround-sound amplifier is adjusted so the sound intensity level at the listening position increases from 21 to 59 dB. What is the ratio of the final sound intensity to the original sound intensity?
In an experiment performed in a space station, a force of 38 N causes an object to have an acceleration equal to 5 m/s2. What is the object's mass
200 Btu are transported into a system via a work mode and 75 Btu are removed via heat transfer mode. Determine the net energy gain for this system
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