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In an ice show a 65.0 kg skater leaps into the air and is caught by an initially stationary 85.0 kg skater.
(a) What is their final velocity assuming negligible friction and that the leaper's original horizontal velocity was 4.00 m/s?m/s
(b) How much kinetic energy is lost?
J
A 20.0cm -diameter cylinder of helium gas is 50.0cm long and at 30.0 ?C. The pressure gauge reads 130psi, How many helium atoms are in the cylinder
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