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A 35.0g bullet moving at 475 m/s strikes a 2.5kg bag of flourthat is on ice, at rest. The bullet passes through the bag, andexits it at 275 m/s. How fast is the bag moving when the bulletexits?
A spaceship with a proper length of 105 m passes an observer at a speed of 0.74355c. What is the length of the ship as seen by the observer
Two blocks (M1 = 2.75 kg and M2 = 6.49 kg) are in contact on a frictionless, horizontal tabletop. What is the contact force between the blocks
A stone has a mass of 6.00 x10-3 kg and is wedged into the tread of an automobile tire. The coefficient of static friction between the stone and each side of the tread channel is 0.84.
a wire of unknown material has a cross sectional area 5 mm^2 and length 12cm. The wire carries current density j = 3uC/s/m^2, what is the resistivity of the unknown material
River Pascal with a volume flow rate of 6.1×105L/s joins with River Archimedes, which carries 1.15×106L/s , What is the speed of the water in the Bernoulli River
A two mmeter high tank is full of water. A hole appears at its middle. What is speed of efflux
A transverse harmonic wave travels on a rope according to the following expression: y(x,t) = 0.14sin(2.7x + 17.5t), What is the average speed of the rope during one complete oscillation of the rope
A large electromagnet coil is connected to a 121 Hz ac source. The coil has a resistance 410 ohms , and at this source frequency the coil has an inductive reactance 260 ohms. What must the rms voltage of the source be
On a workday the average decibel level of a busy street is 84 dB, with 100 cars passing a given point every minute. what is the decibel level of the street
Liquid water at 453K and 1002 kPA has an internal energy of 762 kJ/kg and a density of 890 kg/m^3 a) what is the enthalpy (per weight)? b) We change the state to 573K and 1500 kPA. The internal energy is now 2784 kJ/kg and the specific volume 169.7 c..
a 20 kg mass sits on an inclined plane with friction making an angle of 50 degrees with respect to the horizontal. calculate the frictional force required to keep the mass from sliding down the incline
A ball thrown straight up at an initial speed of 14.0m/s reaches a maximum height of 7.6m. What fraction of the ball's initial kinetic energy is dissipated by air resistance as the ball moves upward?
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