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(a) What is the sound level of a sound whose intensity is 6.5 × 10-8 W/m2?
dB
(b) What is the intensity of a sound whose sound level is 30 dB?
W/m2
A 2.30-?F capacitor is fully charged by being connected to a 6.0-V battery, Calculate the maximum current in the inductor, Calculate the frequency of oscillation of the LC circuit
A cosmic ray proton streaks through the lab with velocity 0.80c at an angle of 49° with the +x direction, Compute the magnitude and direction of the proton's velocity when viewed from frame S'
A NASCAR racecar rounds one end of the Martinsville Speedway. This end of the track is a turn with radius approximately 57.0 m. What is the force responsible for the centripetal acceleration in this case
A converging lens with a diameter of 26.00 cm forms an image of a satellite passing overhead. The satellite has two green lights (wavelength 500 nm) spaced 1.24 m apart.
A particle of charge +1.5 nC is placed at a corner of a Gaussian cube with sides 12.0cm. What is an electric flux through the cube.
A nervous physicist worries that the two metal shelves of his wood frame bookcase might obtain a high voltage difference if charged by static electricity, What is the capacitance of the empty shelves if they have area 0.7 × 103 cm2
A gymnast of mass 56.0 {rm kg} hangs from a vertical rope attached to the ceiling. You can ignore the weight of the rope and assume that the rope does not stretch. Use the value 9.81 {rm m/s^2} for the acceleration of gravity.
Two positive point charges, each 17?C , lie along the x-axis at x = -0.12m and x = +0.12m . Find the electric field at the point (0, 0.21m)
A wire is formed into a circle having a diameter of 10.2 cm and is placed in a uniform magnetic field of 3.19 mT, Find the maximum torque on the wire
The sound level measured in a room by a person watching a movie on a home theater system varies from 60 dB, Approximately how many times louder is the latter sound?
A train starts at rest at a station and accelerates at a rate of 2.0 m/s^2 for 20 seconds. Then, this train runs at a constant speed for 100 seconds and slows down at a rate of 5.0 m/s^s until it stops at the next station. compute the total distan..
As well, the barbell rotates clockwise about its own center, with an angular speed 80 rad/s.
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