Recent content by Joseph Phan

I've taken Unviersity physics the course and we went through Fluid and Fluid dynamics and I'm studying for the MCAT right now. There was a passage on this question how a toilet works and its relationship from how water moves from the Bowl, through the Erkel tube. I'd did research on youtube...

Could someone explain to me how a Siphon works using Bernoulli's equation. Why would one beaker have to have a higher height than the other beaker? My thoughts were that a Pressure differential is needed for water to flow, so the input and the output pressures must be different. In...

Homework Statement Which of the following Graphs BEST illustrates the potential energy vs. time for the system in Figure 1, where t=0 is defined as the time at which the incident box 1st contacts the box on the spring? My question is why can't the Elastic PE be negative? The answer is A...

My professor used different greek notations, I think what he meant was that velocity of sound was proportional to the square root of abs. temperature over inertia

Homework Statement 1) When sound waves travel through increasing temperature, what increases, frequency, wavelength, or both? 2) When you inhale helium and then your voice becomes high and squeaky, what causes this to happen? Homework Equations Vsnd= √(γRT/ M) vsnd= λf The Attempt at a...

I understand that as a solid melts, it increases can increase in polarizability of the medium, and increase the Dielectric constant (K). -ex. like dissolving NaCl and having ions in solution. Why does Thermal motion reduce the polarizability of the medium, thus decreasing the dielectric...

If you increase surface tension, the molecules at the surface are more strongly pulled into the center of mass due to the stronger attractive molecular forces. -Why is it that when surface tension increases in a liquid, its surface decreases in area, but its volume does NOT change? (Volume...

My bad, I worded that poorly. I meant the final block, m2, must always be greater than m1 because the the final block will include the mass of both the bullet and the block.

Inelastic collision. So the block will NEVER be lighter than the bullet. Got it Thanks!

Hi guys, I'm currently going over Berkerley Review Physics example problem and got confused on a question: Ex. 4.1a : A sharpshooter fires a gun at a wooden block of mass M. If the bullet, of mass (m), becomes lodged inside the block, then which of the following is NOT true? The answer was...