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The area of a typical eardrum is about 5.0 × 10?5 m2. (a) Calculate the sound power (the energy per second) incident on an eardrum at the threshold of hearing. W (b) Calculate the sound power incident on an eardrum at the threshold of pain. W
One gallon of gasoline contains 3.1 107 calories of potential energy that are released during combustion. what is the average force produced by the gasoline
Light of wavelength 418 nm is incident normally on a film of water 1.0 µm thick. The index of refraction of water is 1.33. What is the wavelength of the light in the water
A uniform magnetic field of magnitude B = 0.020 T is in the positive y-direction. Determine the magnitude and direction of the magnetic force on each segment.
Find the force on the electron in the hydrogen molecule ion for which the potential is represented by the follwoing. V= (-e^2/r1)+(-e^2/r2)
an electron and a proton are fixed at a separation distance of 847 nm. find the electric potentialat their midpoint
A transformer has 100 turns in its primary windings and 500 turns in its secondary winding. calculate the secondary voltage and current
A satellites are placed in a circular orbit that is 3.64 × 107 m above the surface of the earth. What is the magnitude of the acceleration due to gravity at this distance
Illustrate what are the velocities of the two people after the snowball is exchanged? Disregard the friction between the skates and the ice.
Two particles having charges of 0.520 nC and 18.7 nC are separated by a distance of 1.10 m, Where would the net electric field be zero if one of the charges were negative
A 330-N sphere 0.20 m in radius rolls without slipping 6.0 m down a ramp that is inclined at 34° with the horizontal
Radiation from the nearby star Alpha Centauri is observed to be reduced in wavelength (after correction for Earth's orbital motion) by a factor of 0.999933. What is the recession velocity (direction) of Alpha Centauri relative to the Sun
Over the last 100 years, it is estimated that the top 700 m of the ocean have been heated by 0.1 degrees Celsius. Using the thermal expansivity of water, estimate how much sea-level rise this estimate implies. How much sea-level rise would a 1 degree..
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