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Between each pair of vertebrae in the spinal column is a cylindrical disc of cartilage. Typically, this disc has a radius of about 2.7 x 10-2 m and a thickness of about 1.1 x 10-3 m. The shear modulus of cartilage is 1.2 x 107 N/m2. Suppose a shearing force of magnitude 11 N is applied parallel to the top surface of the disc while the bottom surface remains fixed in place. How far does the top surface move relative to the bottom surface?
A beam of particles is directed at a 0.021-kg tumor. There are 2.3 x 1010 particles per second reaching the tumor, Find the biologically equivalent dose given to the tumor in 12 s
Several people are riding in a hot air balloon. The combined mass of the balloon and the people totals 355 kg. how much mass should be dropped overboard so that the system acquires a net upward acceleration of .150 m/s2
A 75 g Frisbee is thrown from a point 1.2 m above the ground with a speed of 14 m/s. find the reduction in Emec of the Frisbee-Earth system
Consider the particle that is constrained to move along a curve described by y = x4. Find the equation of motion for small displacement about equilibrium
The flywheel of an old steam engine is a solid homogeneous metal disk of mass M = 129 kg and radius R = 85.3 cm. How long does it take for the flywheel to come to rest
n LRC circuit consists of a 291 Ohm resistor, a 30 micro Farad capacitor, and a 276 mH inductor, find the phase angle between the current and the applied voltage
A uniform ladder 7.34m long weighing 410N rests with one end on the ground and the other end against a perfectly smooth vertical wall. What force does the wall exert on the ladder
A suitcase falls out of an airplane which is 400 meters above the ground. What is the time it takes for the suitcase to reach the ground
A 420-g ball is attached to one end of a horizontal cord of length L = 2 m and the other end is fixed, what will be its speed at the lowest point of its path
Consider resistors R1 and R2 connected in series E R1 R2 and in parallel E R1 R2 to a source of emf E that has no internal resistance. How does the power dissipated by the resistors
A spring with a spring constant of 1.5 * 10^2 N/m is attached to a 1.4 kg mass and then set in motion. What is the period of the mass-spring system
An atom in a metastable state has a lifetime of 6.20 ms. What is the uncertainty in energy of the metastable state
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