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A microphone is attached to a spring that is suspended from the ceiling. Directly below on the floor is a stationary 440 Hz source of sound. The microphone oscillates up and down in simple harmonic motion with a period of 2.0s. The dissimilarity between the maximum and minimum sound frequencies detected by the microphone is 2.1 Hz.
What is the maximum speed of the microphone? What is the minimums peed?
A gardener mows a lawn with an old fashioned push mower. The handle of the mower creates an angle of 39o with the surface of the lawn. find the normal force exerted by the lawn on the mower
An L-R-C series circuit L = 0.115H , R = 241? , and C = 7.30?F carries an rms current of 0.450A with a frequency of 401Hz. What is the phase angle in radians
A 9.0 V battery moves 20mC of charge through a circuit running from its positive terminal to its negative terminal. How much energy was delivered to the circuit?
Calcium has a work function of 2.8 eV. If light of frequency 4.3 1015 Hz strikes the surface of calcium, what is the energy of the ejected electrons
An airplane flies due north in a region where Earth's magnetic field has magnitude 5.3×10?5T, declination 0?, and inclination 75?. What's the induced emf between the wingtips, 36 m apart, when the plane flies at 230m/s
A football is punted straight up into the air; it hits the ground 5.2 s later. With what speed did it leave the kicker's foot
A rescue plane spots a survivor 132 m directly below and releases an emergency kit. how far away from the survivor will it hit the ground
A single slit has aperture width 4.54 μm and lies 14.9 cm from a screen. If light of wavelength 420 nm falls on the slit, find the width of the central maximum in centimeters
When jumping straight down, you can be seriously injured if you land stiff-legged. In a stiff-legged landing he comes to a halt in 1.8 ms. Find the average net force that acts on him during this time
a jetliner is moving at a speed of 270 km/h. the plan then decelerates at 4.5 m/s2. what is the minimum runway length on which this aircraft can land
The induced magnetic field at radial distance 6.7 mm from the central axis of a circular parallel-plate capacitor 2.0 x10-8 T. The plates have radius 4.1 mm. At what rate is the magnitude of the electric field among the plates changing?
The eyepiece of a compound microscope has a focal length of 2.60 cm , and the objective lens has = 0.760 cm. calculate the distance between the lenses when the microscope is adjusted for a relaxed eye
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