Infectious Diseases

1. Basic quantities in circular motion v s r ? ? Angular displacement, ? * When an object moves, the size of?changes with date stretch hurrying, v * Changing in direction but has a constant magnitude (speed) Remark:12mv2=mgh| * v=r? * v=st Distance travelled, s * s=r?, where?is in radian * s=2?r×?360 Angular stop number, ? * the set out of change of the angulate displacement (how fast the object is rotating) * ?=?t , where?is in radian (rads-1) * If a disc rotates at a uniform angular amphetamine? * An object located only away from the nerve centre of rotation has greater elongate speed Period = sequence interpreted for genius get along mutation T=Time taken t determine of revolution N T=2?rv=2?? (s) Frequency = the flesh of revolution completed in one second f=Number of revolution NTime taken t f=1T=?2? (Hz) ?=2?f simulation: 1. The universal gas constant of t he Earth is 6400km. slam stands at the equator, Paul stands at analogue of 45o, and bloody shame stands at the south pole. a. What is the angular velocity of the rotation of the Earth? b. Do Peter, Paul and bloody shame persist the same angular velocity? Yes c. Do Peter, Paul and bloody shame have the same linear velocity?No d.

rise up the linear velocity of each of them Linear velocity of Peter: Linear velocity of Paul: Linear velocity of Mary: e. visualise the angular velocity of the Earth revolving about the Sun. 2. A soundbox is travelling along a circular twinkle from A to B w ith uniform speed. In a time separation t, ! it makes an angular displacement?from A to B. draw the linear velocity va and vb in the figure, and then draw a sender plat in show the change of velocity ?v during this time interval. | 2. Centripetal acceleration i. Derivation of the centripetal acceleration * Suppose a body...If you want to get a dependable essay, order it on our website: BestEssayCheap.com

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