Recent content by najd

Okay, but say if it happened in a black hole. As I understand, a black hole has no 'vacuum' in it, so what would happen in that case? You said infinitely fast signalling is impossible, I'm not disagreeing with that. I'm just wondering if the signal in the black hole would travel at the speed...

Yes. Exactly. I want an opinion. There's nothing wrong with a hypothetical question. :P

Yes, that's exactly what I said. I'm asking if it WERE a perfectly rigid one. My question is purely hypothetical.

Hello, Surfing the web I came across a question posted by someone. Basically the question asked if I were to have a very, very long rod, say 1000 ly long, and at each end I place an observer. If observer A pushes the rod, would observer B instantly detect the nudge? I do understand that...

I assume the amplitude decreased because the system lost part of its energy as m2 broke free, and so, it would make sense.. correct me if I'm wrong, please.

Homework Statement Question statement: An object of mass m1 = 9.00 kg is in equilibrium while connected to a light spring of constant s = 100 N/m that is fastened to a wall as shown in (figure a): A second object, m2 = 7.00 kg, is slowly pushed up against m1, compressing the spring by the...

I think you misunderstood me because I forgot to mention that the balloon's initial volume is V as well. The water of volume V was filling it, entirely, so the balloon's volume would increase by 9%, too.

Hey! Thanks! So you're saying my second approach is correct because the pressure caused by the engine, which can only hold V of water, is preventing the ice from expanding to 1.09V, whereas if it the engine weren't there, the ice would expand normally. Okay. I understand. Thank you...

Homework Statement Question: When water freezes it expands about 9%. What pressure increase would occur inside your automobile engine if the water froze. The bulk modulus of the ice is 2x10⁹N/m². Homework Equations B = - Δp/(ΔV/V) The Attempt at a Solution My 1st solution: Volume...