Recent content by rpcarroll

Homework Statement Suppose a heart's ventricular wall moves in simple harmonic motion with amplitude 1.8mm and a frequency of 115 per minute. (a) Given a motion detector in contact with the chest produces sound at 2,000,000Hz which travels through tissue at 1.50 km/s. Find the maximum linear...

Ok, I haven't studied the subject at all (yet), but a professor of mine was explaining some of the theories behind string, brane, etc. to me. So bear with me here; I'm confused by this idea that came into my head earlier: If there are an infinite number of universes where every possible...

So when they ask for the 'total force on the ship', is it just measured at 10km and not, say, 10.05 (I think that would be the center of mass of the cylinder shaped ship)?

Homework Statement A ship in the shape of a cylinder has length 100m, and mass 1000kg with occupants. It has strayed too close to a black hole with mass 100 times greater than the sun (100*2.0*10^30). The nose of the ship is pointed towards the black hole and is 10km from the center of the...

Oh jeez, yeah I see that now, thank you.

Homework Statement An 80 kg skydiver jumps from an altitude of 1000m and opens his chute at 200m (a) The total retarding force on the diver is a constant 50.0N without his chute open, it is constant 3600N with his chute open. What will be the skydiver's speed when he reaches the ground...