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A man strikes a long aluminum rod at one end. Another man, at the other end with his ear close to the rod, hears the sound of the blow twice (once through the air and once through the rod), with a 263 msinterval between them. How long is the rod?
Illustrate what would be the relative strengths and weaknesses of this study? What ethical considerations must be taken into account while undertaking this study?
A 11.9-g mass is suspended 1.47 cm above a nonconducting flat plate, directly above an embedded charge of q. If the mass has the same charge, q, how much must q be so that the mass levitates (just floats, neither rising nor falling)? If the charge..
A uniform disk with mass m = 9.27 kg and radius R = 1.42 m lies in the x-y plane and centered at the origin. What is the magnitude of the torque on the disk about the z axis due to F1
A cup of water is heated with a heating coil that delivers 14.87W of heat. What is the mass of the water
Three +3.0-?C point charges are at the three corners of a square of side 0.50 m. Find the magnitude of the electric field at the center of the square
Vector A is 5.5 cm long and points along the x axis. Vector B is 7.5 cm long and points at +30° above the negative x axis. Determine the sum of these two vectors in terms of magnitude and direction
Suppose the uranium nucleus was at rest just before the decay. If the α particle is emitted at a speed of 1.74×107 m/s, illustrate what would be the recoil speed of the thorium nucleus?
What is Lagrangian for the system
In an amusement park water slide, people slide down an essentially frictionless tube. Does the mass of the person make any difference
A flight attendant pulls her 61N flight bag a distance of 279m along a level airport floor at a constant velocity. The force she exerts is 41N at the angle of 50° above the horizontal.
A horse is capable of moving at four different speeds: walk (1.9 m/s), trot (5.0 m/s), canter (7.0 m/s), and gallop (12 m/s). An is learning how to ride a horse, what was her average velocity over the trip
A car is stopped for a traffic signal. When the light turns green, the car accelerates, increasing its speed from 0 to 4.50 m/s in 0.852 s. What are the magnitudes of the linear impulse and the average total force experienced by a 65.0 kg passenger i..
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