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A bullet of mass mb is fired horizontally with speed v1 at a wooden block of mass mw resting on a frictionless table. The bullet hits the block and becomes completely embedded within it. After the bullet has come to rest within the block, the block, with the bullet in it, is traveling at speed . What is the speed of the block/bullet system after the collision? Express your answer in terms of v1,mb mw, and
You are traveling on an airplane. The velocity of the plane with respect to the air is 160.0 m/s due east. What is the speed of the plane with respect to the ground
A 1500-kg car moving east at 28.00m/s collides with a 1720 kg car moving south at 15 m/s and the two cars stick together.
A uniform rope of uniform weight W hangs between two trees. The ends of the rope are the same height and they each make and angle theta with the trees. What is the tension at either end of the rope. Find the tension at the middle of the rope.
A flight attendant pulls her 70 N flight bag a distance of 247 m along a level airport floor at a constant speed. The force she exerts is 33.00 N at an angle of 52° above the horizontal.
A square loop of side a centered at the origin in the xy plane carries current counter clockwise as view from above (from positions with z > 0). What is the net force and net torque on the loop
A bucket filled with water has a mass of 23 kg and is attached to a rope, which in turn, is wound around a 0.050-m radius cylinder at the top of a well. Illustrate what torque does the weight of water and bucket produce on the cylinder if the cyli..
The distance between the objective and eyepiece lenses in a microscope is 24cm, What eyepiece focal length will give the microscope an overall angular magnification of 350
A jogger's internal energy changes because he performs 6.10 105 J of work and gives off 4.9 multiplied by 105 J of heat. Determine the magnitude of the heat given off while walking
A 1300 kg truck drives around a flat 230 m -diameter circular race course at 27 m/s. What is the magnitude of the net force on the car
The pilot of an aircraft wishes to fly due west in a 49.8 km/h wind blowing toward the south. The speed of the aircraft in the absence of a wind is 192 km/h.
A 1500kg car moving at 40Km/hr is brought to a sudden stop. If all the car's kinetic energy is dissipated in heating its four 5.0kg steel brake disks, by how much do the disk temperatures increase? The specific heat of steel is c=0.120cal/gdegree Cel..
A small but measurable current of 1.1 10-10A exists in a copper wire whose diameter is 3.1 mm. Assume the current is uniform. Calculate the current density
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