Harold the hurler is a physics student who is renowned for his baseball pitching arm. in order to determine the amount of work he performs in throwing a baseball, harold devises an experiment. he stands at the bottom of a deep pit and hurls a 146-g baseball through an open third-floor window in a nearby building. harold\'s aim is so accurate that the ball then smoothly enters the tube of the baseball absorber that harold invented and patented. in this device the ball compresses a spring until it comes momentarily to rest, and this maximum amount of compression is recorded as 43.1 cm. the spring\'s force constant is 817 n/m, and the position of the baseball\'s momentary rest is 7.71 m above ground level. the point in the pit where the hurler starts his pitch is 11.3 m below ground level. how much work does harold perform on the baseball? take g = 9.80 m/s2.answer in j

American eels (anguilla rostrata) are freshwater fish with long, slender bodies that we can treat as uniform cylinders 1.0 m long and 10 cm in diameter. an eel compensates for its small jaw and teeth by holding onto prey with its mouth and then rapidly spinning its body around its long axis to tear off a piece of flesh. eels have been recorded to spin at up to 14 revolutions per second when feeding in this way. although this feeding method is costly in terms of energy, it allows the eel to feed on larger prey than it otherwise could. 1.a field researcher uses the slow-motion feature on her phones camera to shoot a video of an eel spinning at its maximum rate. the camera records at 120 frames per second. through what angle does the eel rotate from one frame to the next? 2. the eel is observed to spin at 14 spins per second clockwise, and 10 seconds later it is observed to spin at 8 spins per second counterclockwise. what is the magnitude of the eels average angular acceleration during this time? 3. the eel has a certain amount of rotational kinetic energy when spinning at 14 spins per second. if it swam in a straight line instead, about how fast would the eel have to swim to have the same amount of kinetic energy as when it is spinning? 4.a new species of eel is found to have the same mass but one-quarter the length and twice the diameter of the american eel. how does its moment of inertia for spinning around its long axis compare to that of the american eel?

Question 1 (5 pts): what is the maximum distance for which you can you resolve the two individual headlights of an on-coming truck as two separate lights rather than one if the headlights are separated by 2.00 m and your eye has a diameter of 1.00 centimeter? assume a wavelength of 500 nm.

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