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A person wears a hearing aid that uniformly increases the intensity level of all audible frequencies of sound by 34.0 dB. The hearing aid picks up sound having a frequency of 250 Hz at an intensity of 2.40 10-11 W/m2. What is the intensity delivered to the eardrum?
On a cool morning, when the temperature is 16.0 ^circC, you measure the pressure in your car tires to be 20.0 psi. After driving 30.0mi on the freeway, temperature of your tires is 51.0 ^circC.
A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 24.0° below the horizontal, Find the length of time the car is in the air
A block of mass m=1.40kg slides along a horizontal table with speed Vo=2.50m/s. How far did the spring compress when the block first momentarily come to rest
A speedboat moving at 33.0 m/s approaches a no-wake buoy marker 100 m ahead. How long does it take the boat to reach the buoy
The average kinetic energy per molecule of an ideal gas with originally Ni=1000 molecules is Kavg=500J. What is the final number of molecules Nf after this process
How much work was done by the lift on the automobile.
A car of mass 1500kg turns an incined corner (radius 50m, angle 30degrees), How fast can the corner be taken without losing traction
A bicycle with wheels 48 cm in radius travels down the street with an initial speed of 7.00 m/s. What is the initial angular velocity of the wheels
Coil 1 has L1 = 47 mH and N1 = 104 turns. Coil 2 has L2 = 68 mH and N2 = 215 turns. what mutually induced emf appears in that coil
Calculate the speed of a proton with a kinetic energy of 1.48 eV, Find the speed of an electron that has a kinetic energy of 1.48 eV. 1 eV = 1.602 × 10^?19 J
An open organ pipe and an organ pipe that is closed at one end both have lengths of 0.48m at 20 C
An electrically neutral thin, square metal slab, measuring 4.80cm on a side is placed in a uniform external field, What is the total charge on the negative side of the slab
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