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The human ear canal is about 2.9 centimeter long. If it is regarded as a tube open at one end and closed at the eardrum, obtain what is the fundamental frequency around which we would expect hearing to be most sensitive?
___________kHz
Three capacitors (3.81, 5.89, and 11.3 ?F) are connected in series across a 45.0 V battery. Calculate the voltage across the 3.81 F capacitor?
A car traveling 56.1 km/h is 24.6 m from a barrier when the driver slams on the brakes. The car hits the barrier 1.72 s later. (a) What is the car's constant deceleration magnitude before impact? (b) How fast is the car traveling at impact?
An uncharged metal slab has square faces with 12 cm sides. It is placed in an external electricfield that is perpendicular to its faces. The total charge inducedon one of the faces is 1.2 nC. What isthe magnitude of the electric field?
a ball mass m60g is shot with speed vi22ms into the barrel of a spring gum of mass m240g initially a rest on a
An asteroid is moving along a straight line. A force acts alongthe displacement of the asteroid and slows it down. The asteroidhas a mass of 5.0×104 kg, and theforce causes its speed to change from 7800 to 4500m/s.
question an am station is broadcasting a radio wave whose frequency is 1340 khz. the value of the capacitance in the
imagine that construction crews have set up a pair of blinking lights 60m apart to make a construction zone along a
The pressure and volume of this gas are kept constant, while the number of molecules is doubled. Illustrate what is the final translational rms speed of the molecules?
Calculate the number of coulombs of positive charge in 270 cm3 of (neutral) water. (Hint: A hydrogen atom contains one proton and an oxygen atom contains eight protons.) I keep getting 1.4E7 and its showing up wrong.
A 150 turn conducting coil with a radius of 18.3cm rotates ata frequency of f = 49.0Hz in a magnetic field B =0.230T. Calculate the generated rms emf
A spring has an unstretched length of 12cm. When an 80 g ball is hung from it, the length increases by 4.0 cm. What is the period of the oscillation
Consider a balloon containing hydrogenmolecules at room temperature (20°C) and atmospheric pressure. what is the number of molecules in the balloon
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