Ayoung man owns a canister vacuum cleaner marked "533 w [at] 220 v" and a volkswagen beetle, which he wishes to clean. he parks the car in his apartment parking lot and uses an inexpensive extension cord 19.0 m long to plug in the vacuum cleaner. you may assume the cleaner has constant resistance.

(a) if the resistance of each of the two conductors in the extension cord is 0.500 ω what is the actual power delivered to the cleaner?

(b) if instead the power is to be at least 523 w, what must be the diameter of each of two identical copper conductors in the cord he buys? (enter the minimum diameter.)

(c) repeat part (b) assuming the power is to be at least 530 w. (enter the minimum diameter.)

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?

Will a heavier bowling ball hit pins better than a lighter bsll

The solar panels used by mark function because of the photoelectric effect. light shines on the cells causing electrons to be ejected from the metal, which produces an electric current. at night on mars, no light will fall on the solar cells and no electric current will be generated. according to your notes, what type of light is typically needed to cause the photoelectric effect? a)visible b)ultraviolet c)infrared