Recent content by Wolf5370

If your method was correct, you would not find that C can be correct too! - Sorry.

No - gravity is the accelerator here - and is always in the same direction. It does not get faster when leaving the thrower's hand it decelerates and then when gravity wins, it accelerates - but ALWAYS in the downward direction. The ball has no motor or jet pack, it leaves with the force of the...

Chawki I think you are confusing yourself with acceleration - ignore it for a moment and think only as velocity... The speed of the ball (not velocity) starts off greatest just after the throw, reaches the apex where speed is zero, and drops back under gravity. So, sped (again not velocity)...

If you ever play poker online, its easy to spot the cheats using a poker-bot to play- they bet silly amounts like REaise "$217.48" - so easy to beat (just do what they expect you to do when you have them beat! and leave before they "learn" what you are doing)

I don't know if the buzzer thing is in Watson's favour. Humans tend to buzz and then thinkk of the answer - we know we know it, so we answer - Watson (I gather at last) buzzes when it has an answer - so no recall time (5 seconds is a long time for a machine such as this - just look how fast...

So, the argument is - what is space? then. If we consider it to be the vacuum, then it has no substance to hold internal temperature - it is merely a void through which particles of various types 'wander' through. If we take it as an area of space and count everything in it - i.e. take the...

Wow, that's a lovely way to put it - I like that. I was going to say the same (probably in half a page!) but nowhere near as elegantly.

Yes of course. Either we have a small lightweight frame and leave the impact resistance (and cut resistance) to the "fabric", or we have a lighter material that can pass the force through to a strong back board of some kind (whether that is physical or the curtain locking together and using...

Actually, have you ever tried to throw a tennis ball through a curtain? It losses a lot of its energy trying to lift the curtain (all of it). This is useful for a portable shield wall perhaps (for a lay up for example - or temporary command post etc). If the bullet can not cut through the...

Enthalpy is the total energy of a thermodynamic system - Internal Energy and the energy required to make room for it (i.e. increase the pressure of its environment to make space). It is basicaly H=U+pV (H is Enthalpy in Joules - U is internal energy, p is pressure and V is volume). As the...

Would this also imply that they would emit negaitive gravity?

I think the spinning (rifling) is to help the bullet trace as straight a line as possible as it is less affected by differences in mass, surface and temperature across the bullet. It may help it to cut through the air (in particular perhaps air currents). One would have thought though, that if...

I think rather than trying to skew a bullets course with magnets (lead is diamagnetic so is repelled by both poles, but very weakly so - it takes a very strong magnetic field to repel lead significantly - and the force behind a fired bullet would make anything possible of affectinbg it vis a...

Relativistic mass is a measure of the energy of a particle which changes with velocity - it is NOT invariant mass (light, photons, has zero invariant mass). Energy and mass are transferable - however, although a small amount of mass (if it were possible to fully convrt it into energy) would...

Hi guys, thank you both for the welcome and you answers. I probably was as clear as mud. I understand what you are both saying in that for the same mass, the curvature in space at the same distance (externally) would be the same. I was referring to the "strength" of the gravity when I used...