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A 112-cm-long rod is rotating around its center. Its mass is 291 g and its angular velocity is 30 rad/s. Suddenly, for no apparent reason, half of the mass goes to one end of the rod and the other half goes to the other end. Find its new angular velocity?
A cannon ball (m=.7 kg) traveling at 200m/s hits and is impeded into a 400 kg car. If the car was initially at rest, what will be its velocity after the impact
An AC generator supplies an rms voltage of 240 V at 60.0 Hz. It is connected in series with a 0.450 H inductor, a 3.90 ?F capacitor and a 316 ? resistor. What is the peak voltage across the inductor
A 100-W lightbulb has a resistance of about 12 ?when cold (20 ?C) and 156? when on (hot). Estimate the temperature of the filament
A grandfather pulls his granddaughter, whose mass is 19.3 kg and who is sitting on a swing with ropes of length 2.75 m, What is the angle (in degrees, measured relative to the vertical) from which she is released
1 examine a particular thin film system in some depth -review the literature.ag deposited on gaasal deposited on
A playground merry-go-round has radius 3-{rm m} and moment of inertia 3000-{rm{ kg}} cdot {rm{m}}^2 about a vertical axle through its center, and it turns with negligible friction.
Two barometers are made with water and mercury. If the mercury column is 45 in. tall, how tall is the water column
a magnetic field has a magnitude of 1.20 x 10-3 t and an electric field has a magnitude of 4.70 x 103 nc. both fields
A cart with mass 320 g moving on a frictionless linear air track at an initial speed of 1.9 m/s undergoes an elastic collision with an initially stationary cart of unknown mass. What is the speed of the two-cart center of mass
A 50.0 g ball of copper has a net charge of 1.7 µC. What fraction of the copper's electrons have been removed
A motercycle has a mass or 2.50*102 kg. a constantforce is excerted on it for 60.0s. What is the change in momentum
swatville sluggers is a small manufacturer of baseball bats made from highquality 3-by-3-inch blocks of wood. once the
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