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A piano tuner hears one beat every 3.1 seconds when trying to adjust two strings, one of which is sounding 440 Hz, so that they sound the same tone. How far off in frequency is the other string?
Hz
A glucose-winged gull, ascending straight upward at 5.20 m/s drops a shell when it is 12.5 m above ground.
A point charge q1 = -8.9 μC is located at the center of the thick conducting shell of inner radius a = 2.2 cm and outer radius b = 4.5 cm, the conducting shell has a net charge of q2 = 1.1 μC.
The velocity of a boat with respect to the shore is 2 meters/second. The velocity of the water with respect to the shore is 1 meter/second. What is the distance traveled by boat after 3 minutes if the boat is traveling in the opposite direction of..
A girl rides the escalator that moves foward at a constant speed. As the girl raises, how do her gravitational energy and kinetic energy change.
A flywheel in a motor is spinning at 580 {rm rpm} when a power failure suddenly occurs. The flywheel has mass 40 {rm kg} and diameter 75 {rm cm}.
An ideal transformer's primary has 2000 turns and secondary has 50 turns. The primary is connected to a source of 120 V, Find the current in the secondary
An 80 g, 35 cm long rod hangs vertically on a frictionless, horizontal axle passing through its center. A 13 g ball of clay travelling horizontally at 2.50 m/s hits and sticks to the very bottom tip of the rod.
A squirrel has x- and y-coordinates ( 1.4m , 3.3m ) at time t1=0 and coordinates ( 4.8m , -0.40m ) at time t2 = 2.7s, Find the magnitude of the average velocity
A car goes around a curve on a road that is banked at an angle of 35.0^\circ. What is radius of curve
In 1986 a gargantuan iceberg broke away from the Ross Ice Shelf in Antarctica. It was approximately a rectangle 160 km long, What is the mass of this iceberg, given that the density of ice is 917 kg/m3
A 0.75 kg ball attached to the end of a horizontal cord, is rotated in a circle of radius 1.9 m on a frictionless horizontal surface, What is the max speed the ball can have
A 290-mL spherical flask contains 0.075 mol of an ideal gas at a temperature of 345 K. What is the average force exerted on the walls
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