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The intensity (in W/m2) of one sound is 6.94 times as great as the intensity of another sound. Relative to the quieter sound, what is the intensity level ß of the louder sound?
a 28.0 mh inductor has a reactance of 2.20 k.a what is the frequency of the ac current that passes through the
An X-ray photon scatters from a free electron at rest at an angle of 175 degree relative to incident direction. Find the kinetic energy of the recoil electron
A physics lab demonstrates the principles of simple harmonic motion (SHM) by using a spring affixed to a horizontal support, calculate the spring constant
Calculate the rate of heat conduction through house walls that are 13.0cm thick and that have an average thermal conductivity twice that of glass wool. Assume there are no windows or doors.
The electric motor of a model train accelerates the train from rest to 0.740 m/s in 34.0 ms. Find the average power delivered to the train during its acceleration
An unknown tuning fork produces a beat frequency of 3Hz when played with a 440Hz fork, What is the frequency of the unknown fork
Bats use the Doppler effect as a directional guide and to detect insects. Find the frequency of the sound detected by the bat
The water pump on the engine of an automobile has a mass flow rate of 8.30 lbm/s. The water enters at 0.00 psig with a velocity of 1.00 ft/s and leaves at 10.0 psig with a velocity of 10.0 ft/s with no change in height or tempe..
In proton-beam therapy, a high-energy beam of protons is fired at a tumor. What is the total charge of the protons that must be fired at the tumor to deposit the required energy
Light of wavelength 653.0 nm is incident on a narrow slit. The diffraction pattern is viewed on a screen 83.5 cm from the slit. obtain the width of the slit
the blades in a blender rotate at a rate of 6600 rpm. when the motor is turned off during operation the blades slow to
A 40.00-W eletric motor is able to accelerate a 8755 g car from rest to 30.00 mph in 31.10 seconds. Calculate the efficiency of the motor
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