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A 2.71 kg disc is attached to the end of a string whose length is 0.55 m. The disc slides without friction on a horizontal surface as indicated in the Figure. If the string can withstand a maximum tension of 134.7 N, what is the maximum tangential speed the disc can have before the cord breaks?
The disc is whirled in a vertical circle of the same radius about a fixed point. Find the tension at the top if the speed at the top is 2.6538 m/s.
A wooden block is cut into two pieces, one with three times the mass of the other. Determine the ratio of d/D of distances each block travels
A rifle with a barrel length of 61.0 cmfires a 10.0 g bulletwith a horizontal speed of 360 {\rm m/s}. How long does it take the bullet to come to rest
What is the angular velocity of a 50 Kg diver who changes the radius of gyration from .5 meters to .2 meters while in flight
A vertical tube that is closed at the upper end and open at the lower end contains an air pocket. The open end of the tube is under the water of a lake. What is the volume of the air pocket under these conditions
An aluminum wire has a cross-sectional area of 2.70x 10^-6 m^2 and carries a current of 7.50 A. The mass density of aluminum is 2.70 g/cm^3. find the average speed of the electons in the wire.
Find the energy absorbed in eV by a hydrogen atom creating the H-alpha absorption feature in the spectrum if the H-alpha wavelength is 656 nm
A 125 kg flatbottomed boat is floating along at 5.0 m/s, headed east. Sally Sue, standing at one end of the boat, starts to walk at 2.0 m/s, what is the speed of the boat as she walks along
What are the approximate dimensions of the smallest object on earth that astronauts can resolve by eye when they are orbiting 298 km above earth. Assume 598 nm of light and pupil diameter of 2.4 mm.
An aspiring physicist wants to build a scale model of a hydrogen atom for her science fair project. how big should she try to make the nucleus
Consider a car weighing 1500 kg containing three people weighing a total of 240kg. How fast will the car be moving at the end of 50 m
An object with a net charge of 44 µC is placed in a uniform electric ?eld of 554 N/C, directed vertically. The acceleration of gravity is 9.81 m/s^2. What is the mass of this object if it ?oats in this electric ?eld?
A horizontal spring-mass system has low friction, spring stiffness 225 N/m, and mass 0.2 kg. The system is released with an initial compression of the spring of 8 cm and an initial speed of the mass of 3 m/s.
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