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A girl with a mass of 60kg springs from a trampoline with an initial upward velocity of 8.0 m/s. At height 2.0 meters the trampoline, the girl grabs a box with a mass of 15kg. The velocity before she grabs the box is 4.98 m/s. and the velocity after she grabs the box is 3.98 m/s
a) what is the maximum height that the girl (with box) reaches? Measure hmax with respect to the top of the trampoline
Calculate the moment of inertia and the rotational kinetic energy for the following objects spinning about a central axis
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Point charges of 6.2*10^-8 C and -6.4*10^-8 C are placed 72 cm apart. A third point charge of 6.3*10^-8 C is placed half way between the first two point charges
Chromium is produced by reacting its oxide with aluminium. If 354 g of Cr2O3 and 158 g of Al react to form 204 g of Al2O3, how many grams of Cr are formed.
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