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The size of your eardrum (the tympanum) partially determines the upper frequency limit of your audible region, usually between 16,000 Hz and 20,000 Hz. If the wavelength is about twice the diameter of the eardrum and the air temperature is 20oC, how wide is your eardrum? Is your answer reasonable?
A dart is thrown horizontally with an initial speed of 6 m/s toward point P, the bull's-eye on a dart board. How far away from the dart board is the dart released in meters
A guitar string with mass density ? = 0.00021 kg/m is L = 0.95 m long on the guitar. The string is tuned by adjusting the tension to T = 82.6 N. find With what speed do waves on the string travel
Two 2.1-cm-diameter electrodes with a 0.10-mm-thick sheet of Teflon between them are attached to a 9.0 V battery, What is the charge before the Teflon is removed
One of the fragments falls straight downward as though it had been released from rest. Explain how far from the gun does the other fragment land
A 169× astronomical telescope is adjusted for a relaxed eye when the two lenses are 1.33 m apart. What is the focal length of each lens
a solenoid with length of 2.71 m and N= 311 turns/m carries a current 2.63 A. It stores 2.57 J of energy. What is the cross-sectional area of the solenoid
A 10 kg picture is held in place by two wires, the first hanging at 35 degrees to left of vertical and second at 45 degrees to right of vertical
In a 2.0- intense cycling race, a cyclist can loses 3.9 of water through perspiration. Estimate how much heat the cyclist loses in the process
An electron is in a certain energy state in a one-dimensional, infinite potential well from x = 0 to x = L = 175 pm. What is the change in the electron's energy
The work function for potassium is 2.24 eV. If potassium metal is illuminated with light of wavelength 300 nm
A child sit down in a seat on a Ferris wheel. Suppose the wheel has a radius of 70m, and that when the ride begins, what angle has the child rotated through
A 25.3 cm diameter basketball dropped from the sunsphere reaches a terminal velocity of 19.1 m/s. What is the weight of the basketball
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