# 12. Ultrasonic Sound
hard solid objets, why?
wave
can
pass
even
through the

Agas is contained in a vertical, frictionless piston–cylinder device. the piston has a mass of 3.2 kg and a cross-sectional area of 35 cm2. a compressed spring above the piston exerts a force of 190 n on the piston. if the atmospheric pressure is 95 kpa, determine the pressure inside the cylinder.

Determine the maximum r-value of the polar equation r =3+3 cos 0

Determine el momento angular de un rueda de 3000g moviendose a 10m/s con un radio de giro de 400cm