Physics, 18.10.2019 18:30, austintules2005
Today's class on current and resistance is about to begin and you await your professor, who is known for unorthodox demonstrations. he walks in just at the beginning time for the class, and is carrying hot dogs! he then proceeds to set up a demonstration using an older style of hot dog cooker in which the hot dogs are directly connected across 120 v from the wall socket. he has modified the cooker so it simultaneously applies the 120 v to three combinations: across the ends of a single hot dog, across the ends of two hot dogs in parallel, and across the outer ends of two hot dogs in series. he explains that he has measured the resistance of a hot dog to be 12.6 ω, and that a hot dog requires 79.0 kj of energy to cook it. he says he will give extra credit to anyone who, before any hot dog begins smoking, can determine which hot dog(s) will cook first, and the time interval for each hot dog to cook.
Answers: 2
Physics, 21.06.2019 19:30, 314180
Agymnast dismounts off the uneven bars in a tuck position with a radius of 0.3m (assume she is a solid sphere) and an angular velocity of 2rev/s. during the dismount she stretches out into the straight position, with a length of 1.5m, (assume she is a uniform rod through the center) for her landing. the gymnast has a mass of 50kg. what is her angular velocity in the straight position?
Answers: 2
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