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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?
On a unit circle with a diameter of 2 m (r=1 m) there are 2 positive charges of 1 C each, one at the center of both sides of the circle. What is the net force at the top point of the unit circle
A photoflash unit makes a very bright light for a very short time. Discuss differences in the exposure of the film with and without a flash unit. Consider the f-stop and shutter speed in your deliberation.
When a current flows in an aluminum wire of diameter 2.45 mm, the drift speed of the conduction electrons is 1.05 × 10-4 m/s. What is the electron current in the wire
a 15 m beam is supported (hinged supports) at both ends and is loades with a 50 n weight 4 m from one end and a 100 n weight 8 meters from the same end. what are the forces at the two supports
The magnetic flux through a coil of wire containing two loops changes from -41 Wb to +16 Wb on 0.35 s, What is the emf induced in the coil
A car with a total mass of 1.78 103 kg has wheels of radius 31.0 cm and moment of inertia 0.805 kg · m2. Find the car's rotational energy when the car is moving at a speed of 22.5 m/s
Regarding the Earth and a cloud layer 800 m above the Earth as the "plates" of a capacitor, calculate the capacitance of the Earth-cloud layer system. What is the maximum charge the cloud can hold
A target glider, whose mass m2 is 340 g, is at rest on an air track, a distance d = 53 cm from the end of the track. How long does the target glider take to reach the end of the track
A single slit has a width of 2.1x10^(-6)m and is used to form the diffraction pattern. Find out the angle that locates the second second dark fringe when the wavelength of the light is 430 nm.
A 0.07-kg lead bullet traveling 296 m/s strikes an armor plate and comes to a stop. If all of the bullet's energy is converted to heat that it alone absorbs
suppose that all the energy goes into the arrow, with what speed does the arrow leave the bow.
A light bulb is wired in series with a 122-? resistor, and they are connected across a 120.0-V source. What is the resistance of the light bulb
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