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The radius of a typical human eardrum is about 4.0 mm. Find the energy per second received by an eardrum when it listens to sound that is at the threshold of hearing. Find the energy per second received by an eardrum when it listens to sound that is at the threshold of pain.
A jet pilot takes his aircraft in a vertical loop. If the jet is moving at a speed of 360 m/s at the lowest point of the loop, determine the minimum radius of the circle
Assume L1 = 0.844 m and L2 = 0.401 m. Calculate the normal force exerted by the floor on each hand
The plane is inclined at an angle of 24.9 degrees with the horizontal. Using the accerlation due gravity from your reference table. Illustrate what is the magnitude of object's acceleration?
A small metal ball with a mass of 6.19 g and a charge of 6.15 mC is located at a distance of 0.67 m above the ground in an electric field of 11.5 N/C directed to the east
Two solid spheres, each of mass m, are rolling without slipping with a speed v. If the spheres have radii R1 and R2 with R1/R2 = 5.5, what is the ratio of their kinetic energies
a student standing on a train staiton observes that the pitch (frequency) of the train decreases from 888.8 Hz to 862.8 Hz, What is the speed of the train
Over a certain region of space, the electric potential is given by: V = 3x^2 - 2xy + xyz, Find the expressions for the x, y, and z components of the electric field over this region
One mole of a monatomic gass initially at 273 K and 1 atm is compressed isothermally (T constant) from volume 22.4 L to 11. 4 L, Find the final pressure and draw a PV diagram, Labeling the initial and final states 1 and 2
A piñata of mass 3.50 kg is attached to a string tied to a hook in the ceiling. What is the work done by gravity by the time the string is in a vertical position for the first time
During a workout, the football players at Rutgers State University ran up the stadium stairs at a steady pace in 58 s. estimate the average power output on the way up
The magnitude of the electrostatic force between two identical ions of mass 1.224×10-25 kg that are separated by a distance of 6.50 nm is 1.770×10-9 N. Calculate the electric field at the site of each ion
An open-pit coal mine consumes 71hectares of land, down to a depth of 23m, each year. What volume of earth, in cubic kilometres, is separate in this time.
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