more of the streaim From the perspective of a right-Ral fastball spin clockwise
ID: 2037201 • Letter: M
Question
more of the streaim From the perspective of a right-Ral fastball spin clockwise or counterclockwise? F everyday phenomenon box 9.2.) vis- 033. Explain. (Sea ely (See everyday Q34. Does the path oes the path of a curveball really curve? phenomenon box 9.2.) With the temperature held constant, the piston of a cylinder containing a gas is pulled out so that the volume increases from 0.1 m2 to 0.3 m3. If the initial pressure of the gas was 80 kPa, what is the final pressure? EIO A Q47-kg block of wood is floating in water. What is the magnitude of the -buoyant force acting on the block?Explanation / Answer
9) As we know, PV = constant
P1 V1 = P2 V2
0.1 x 80 = P2 x 0.3
P2 = 26.67 kPa
10) Buoyant force, F = rho x g x V
V = mass / density of wood = 0.47/ 0.5 x 1000 = 9.4 x 10-4 m3
Force, F = 1000 x 9.81 x 9.4 x 10-4 = 9.22 N
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