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A microphone is attached to a spring that is suspended from the ceiling, as the drawing indicates. Directly below on the floor is a stationary 480-Hz source of sound. The microphone vibrates up and down in simple harmonic motion with a period of 2.3 s. The difference between the maximum and minimum sound frequencies detected by the microphone is 2.3 Hz. Ignoring any reflections of sound in the room and using 343 m/s for the speed of sound, determine the amplitude of the simple harmonic motion.
A clown is using a concave makeup mirror to get ready for a showand is 27.9 cm in front of the mirror. The image is 66.1cm behind the mirror. Calculate the focal length of the mirror.
The highest-energy cosmic ray ever detected had an energy of about 3.0x10^20 eV. Assume that this cosmic ray was a proton. What was the proton's speed as a fraction of c
If an object on a horizontal, frictionless surface is attached to a spring, displaced, and then released, it will oscillate. If it is displaced 0.180 m from its equilibrium position and released with zero initial speed, then after 0.950 s its disp..
questiona mass m 90 kg slides on a frictionless track that has a drop follow by a loop-the-loop with radius r 15.1 m
a 65 kg person throws a .045 kg snowball forward with a speed of 30 ms. a second person with a mass of 60 kg catches
a 20 kg mass sits on an inclined plane with friction making an angle of 50 degrees with respect to the horizontal. calculate the frictional force required to keep the mass from sliding down the incline
To stop a car, first you require a certain reaction time to begin braking; then the car slows under the constant braking deceleration. determine the magnitude of the deceleration
An electromagnetic wave has a magnetic field of rms value 3.0 x 10^-6 T. What is the intensity of the wave
River Pascal with a volume flow rate of 7.0×10^5 L/s joins with River Archimedes, which carries 1.07×10^6 L/s, to form the Bernoulli River. What is the speed of the water in the Bernoulli River
A blackbody will emit less energy at higher frequencies.
A 12- V battery causes a current of 0.40A through a resistor. how may joules of energy does the battery lose
Imagine that in a certain proton accelerator, roughly 1011 protons at a time go around a ring having a radius of 4.0 km, What is the current flowing in the ring, in amperes
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