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A 72.0-kg bungee jumper jumps from a bridge. She istied to a bungee cord whose unstretched length is 12.0 m, and fallsa total of 30.4 m.
A) Calculate the spring stiffness constantk of the bungee cord, assuming Hooke's law applies
B) Calculate the maximum acceleration experiencedby the jumper.
compare the supply chain practices of two or more different companies in the same industry or similar industries.
A 1,220-kg car traveling initially with a speed of 25.0 m/s in an easterly direction crashes into the rear end of a 8,800-kg truck moving in the same direction at 20.0 m/s, What is the velocity of the truck right after the collision
A wistle (frequency = 594 Hz) is essentially a tube with one end open. If the 500 Hz sound is the 1st harmonic, what is the length of the whistle
Two thin lenses with a focal length of magnitude 12.0cm , the first diverging and the second converging, are located 9.00cm apart. What is the height of the final image
A 10000 kg train car A traveling at a speed of 24 m/s strikes an identical car B initially at rest. calculate the amount of the initial kinetic energy is transformed into thermal or other forms of energy
A person wants to push a lamp ( mass 7.2 ) across the floor, for which the coefficient of friction is 0.20. calculate the maximum height x above the floor at which the person can push the lamp so that it slides rather than tips.
A laser emits a narrow beam of light. The radius of the beam is 1.0 mm, and the power is 2.8 mW. What is the intensity of the laser beam
A blow-dryer and a vacuum cleaner each operate with a voltage of 120 V. The current rating of the blow-dryer is 10 A, and that of the vacuum cleaner is 5.0 A, Determine the power consumed by the blow-dryer
at three corners of a rectangle length 11.8 cm height 5.9 cm the following charges are located q1 upper left corner q2
The weight of a rectangular block of low-density material is 15.0 N. With a thin string, the cen- ter of the horizontal bottom face of the block is tied to the bottom of a beaker partly filled with water. Find the buoyant force on the block
A uniform 1.9-kg rod that is 0.90 m long is suspended at rest from the ceiling by two springs, one at each end. Find the angle that the rod makes with the horizontal
A 0.21-kg pinecone falls 10 m to the ground, where it lands with a speed of 12 m/s. How much work was done on the pine cone by air resistance
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