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On a frictionless, horizontal air table, puck A (with mass0.250 kg) is moving toward puck B (with mass 0.330 kg),which is initially at rest. After the collision, puck Ahas a velocity of 0.120 m/s to the left, and puck B has avelocity of 0.830 m/s to the right.
a) What was the speed of puck Abefore the collision?b) Calculate the change in the total kinetic energy of the systemthat occurs during the collision.
Consider two displacements, one of magnitude 2.9 m and another of magnitude 4.4 m. What angle between the directions of this two displacements
A copper wire, whose cross-sectional area is 5.22 x 10-6 m2, has a linear density of 5.86 x 10-3 kg/m and is strung between two walls. At the ambient temperature, a transverse wave travels with a speed of 43.1 m/s on this wire. The coefficient of ..
A hoop and a disk, both of 0.58- m radius and 3.0- kgmass, are released from the top of an inclined plane 2.5 m high and 8.8 m long. What is the speed of each when it reaches the bottom? Assume that they both roll without slipping. What is the spe..
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A car of mass 1200kg is heading east at 10m/s. A second car of mass 1500kg is heading west at 20.0m/s. They meet in an elastic collision. What was the initial kinetic energy of the system
Two steel wires(of the same length and different radii) are connected together, end to end, and tired to a wall. How far does the midpoint move
A simple pendulum is made of a small blob of mass m = 9.500 kg attached to the end of an inextensible wire. find the magnitude of the tension in the wire
A 97-mW vertically polarized laser beam passes through a polarizer whose polarizing angle is 15° from the horizontal. What is the power of the laser beam when it emerges from the polarizer?
William Tell is shooting at an apple that hangs on a tree. The apple is a horizontal distance of 20.0 m away and at a height of 4.00 m above the ground. what is the arrow's initial velocity
An irregularly shaped piece of metal has a weight of 8.840 N. It is suspended from a scale, which reads 7.320 N when the piece is submerged in water
A projectile is fired vertically from Earth's surface with an initial speed of 8.9 km/s. Neglecting atmospheric friction, how far above the surface of Earth will it go
A 10-kg body is force against a horizontal elastic spring compressing it an amount of 0.5 meter. When the body was released,it moves on a horizontal distance of 3 meters before coming torest. The force constant of the spring is 50 N/m.
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