Recent content by bpw91284

1 Atm = 101325 Pascals

Just curious, how would you solve it differently then? In my solution the atmospheric pressures cancel out any way, so would your solution be the same as mine?

Homework Statement A diver with a snorkle can handle a pressure differential of 1/20 atmospheric pressure between his the oustide of his lungs and the inside. How deep can he dive? The water's density is 1025 kg/m^3. Homework Equations P=P_0+pgh The Attempt at a Solution I assumed...

Ya I figured out what it would look like right soon after I asked the question. Thanks for the help.

What would it's height vs. time graph look like?

Homework Statement A ball bounces up and down off the ground and each bounce it returns to the same height. Is this simple harmonic motion? Homework Equations None The Attempt at a Solution I don't think it is because in simple harmonic motion the maximun velocity occurs in the middle...

Wow, thanks I finally get it. The thing I was misunderstanding is what they meant by "sections". Thanks for all the help.

Alright, reread the problem and tell me what to change in my method. Problem Statement A rigid massless rod is rotated about one end in a horizontal circle. There is a mass m_1 attached to the center of the rod and a mass m_2 attached to the outer end of the rod. The inner section of the rod...

Where are you doing sum of forces = ma at? And why doesn't my method work?

What are those equations from?

That does not make sense according to the problem because then tension at mass one would be 4 times the tension at mass two, and the problem states that it's three times. Also, I did it that way and still did not get the correct answer. If you could show me the math to get m_2/m_1=1/4 I'd really...

I understand how there it centripetal force when something is physically attached to say a string and spinning around. I do not understand how the car has centripetal force. To me it just seems like the component of the weight down the slope parallel to the hill is what would hold the car on the...

1. Problem Statement What is the chance of a light car safely rounding an unbanked frictionless curve compared to a heavy car? Both cars have the same speed and tires. Solution I know that tan(theta)=v^2/(rg) proves that weight does not matter but I do not understand why and my book doesn't...

You are repeating what I have already said… The alpha comment, duh… Your initial length sentence… my first post I stated that D_s=1.0005*D_r… And no, I can't take it from here because you have not told me anything I didn't already know.

alphas don't matter, they are just from table. The only given info is that the diameter of the sphere is 0.05% larger than the diameter of the ring at the initial temp of 70C. "The change plus the initial value for each material should equal each other right?" The change in diameter of the...