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A 195g oscillator has a speed of 124cm/s when its displacement is 3.50cm and 55.0cm/s when its displacement is 6.90cm what is the oscillators max speed?
Two insulated spheres have radii r1 and r2, and charges q1 and q2, What is their combined kinetic energy when they collide, in terms of the variables above, and k the constant in Coulombs Law
A 1000 kg flat railroad car is rolling to the right at 4.5 m/s. A 60 kg man, is standing on the right end of the cart watching the track in front of the car. What is the final speed of the train car with the mud stuck to it
A thin rod consists of two parts joined together. One-third of it is silver and two-thirds is gold. The temperature decreases by 31.7 C°. Determine the fractional decrease ?L/(LSilver + LGold) in the rod's length, where LSilver and LGold are the init..
In the continuous-caster process, steel sheets 25.3cm thick, 2.05m wide, What are the dimensions of a steel sheet once it has cooled to 21.0C
A small remote-control car with a mass of 1.59 kg moves at a constant speed of v = 12.0 m/s in a vertical circle inside a hollow metal cylinder that has a radius of 5 m.
At the start of a race, a four-man bobsled team pushes their sled as fast as they can along a 50 m flat starting stretch. find the speed of the sled right before the team jumps on the sled
a catapult launches a rock towards a hill 500m away. the rock lands on the hill 20m above the release point of the rock. find the max height of the rock during flight
80 mA of current flows through a resistor connected in series to a 4.25v battery. What is the resistance of the resistor
A solenoid of inductance L = 50 mH has a magnetic energy U = 3 x10-4 J with a density u = 0.0042 J/m3, What is the winding density n of the solenoid
A parachute dropped from a 30 meter-high cliff falls with a constant velocity of 1.5 meters per second. How long does it take for the stone to hit the ground
A convex lens with 19.8 is mounted 40.0 to the left of a concave lens. When an object is placed 31.0 to the left of the convex lens, What is the focal length of the concave lens
the giant swing at the county fair consists of a vertical central shaft with a number of horizontal arms attached at its upper end. find the time of one revolution of the swing
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