A student blow a whisle. in which direction do the air particles vibrate with respect to the direction the sound wave travels. A. parallel to B. perpendicular to

C. at a45 angle to

D. at an unpredictable angle

The volume of helium in a blimp is 6.28 x 10^9 millimeters. the density of helium in the blimp is .1786 kilogram/meter^3. find the mass of the helium in the blimp.

What’s the theoretical yield of solid lead

Which sentence from holes contains an implied personality trait? stanley and his parents had tried to pretend that he was just going away to camp for a while, just like rich kids do. he'd just been in the wrong place at the wrong time. stanley felt somewhat dazed as the guard unlocked his handcuffs and led him off the bus. stanley nodded to show he understood