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As seen from above, a playground carousel is rotating counterclockwise about its center on frictionless bearings. A person standing still on the ground grabs onto one of the bars on the carousel very close to its outer edge and climbs aboard. Thus, this person begins with an angular speed of zero and ends up with nonzero angular speed, which means that he underwent counterclockwise angular acceleration. The carousel has a radius of 1.50 m, an initial angular speed of 3.14 rad/s, and a moment of inertia of125 kgm2. The mass of the person is 48 kg. Find the final angular speed of the carousel after the person climbs aboard
Assigned homework a. The objective of this problem is to get a sense of the tradeoff between cross-section and stiffness for beam structural member. Consider a beam that is 1 me
Explain Crohn disease Crohn's disease: a chronic, recurrent disease characterized by patchy inflammation of any portion of digestive tract from the mouth to anus.
Cosmic censorship conjecture (R. Penrose, 1979) The conjecture, so far completely undemonstrated in the context of general relativity, that all singularities (along the possib
two students walk in the same direction along a straight path at a constant speed one at .90m/s and another at 1.90m/s. assuming that they start at the same point and same time, ho
Recording of hologram Waves scattered from the object are known as object waves. The coherent waves reaching directly form the source is known as reference waves. When object w
In this type of capacitors the dielectric consists of one or more layer of extremely thin craft paper which looks very much like cigarette paper. The metal plates consist of alumin
Demerits of Semiconductor Diode over Vacuum Diode (i) It can't withstand high reverse voltage (ii) It can't operate at fairly high temperatures.
A mirror cleaned with an alcohol solution is slightly colder right after it is cleaned. Why?
A coil of inductance 159.2mH and resistance 40 is connected in parallel with a 30µF capacitor across a 240V, 50Hz supply. Calculate (a) the current in the coil and its phase ang
In a particular region there is a uniform current density of 18 A/m 2 in the positive direction. What is the value of fB·ds when that line integral is calculated along the three s
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