Recent content by rayjohn01

And where does potential energy come from may I ask ?? Whilst it's true that the random motion has probably increased -- for an elastic material this will be small and will equalize after a short time . So called potential energy is due to any energy exchange between two objects be they...

What anybody 'sees' including dogs we have not a clue -- we can tell what they react to -- dogs do not react to visual color differences --bees do react to ultra violet. When you say 'see' you mean some sort of internal visualisation ( which we cannot share anyway ) so you could ask does a...

Anal ?? Did you miss a B ? The original question asked how force but (no accelleration ) could exist in a beam under stress. The answer is in the motion of atoms /molecules in the beam, are they both being compressed and stretched . It is very clear that this effects internal motion as...

You keep on using the term 'at rest ' but a beam in tension is NOT at rest it is very much not at rest , but it's agragate motion is zero . The motion of all atoms or molecules has been enhanced due to other motions the forces at work . Btw obscufation is a local term ( I am not such...

Actually it is thought that dogs can only see black and white ( i.e greys ) but in electonic terms your question is simple it is just a matter of frequency change . (in a theoretical sense ) We do this every day with satellie photos giving false color pictures of Radar images , infra...

interesting Forces are not due to some 'quite' effect -- they are due to the internal motions of molecules atoms and the like . When these are in balance then the result is no net motion even tho' the whole thing is in dynamic motion at the atomic scale . Take a Human exerting a force...

Although light is a 'little ' effected by air the experiments are all valid in vaccuo light does not need any of our normal media . It will diffract purely on a Geometric basis (as per Hygens wave theory ) . The difference in QM is that there, a single photon is considered whereas Hygens...

Aladin -- the so called laws of physics and hence equations come very gradually from observation with endless experiments ---- then someone tries to fit a mathematical relation ( Human logical ) to what they see . Energy (of motion ) momentum etc. are OBSERVED facts for instance what you...

Sorry Delta --- I use the term color to represent frequency or wavelenth it's just shorter to type . But as someone else said animals see out of our range, and 'see' in a general sense does mean to 'sense' so we 'see' infra red through feeling , and ultra violet through burning . As to Human...

Well Aviator I am not quite sure about the question and do not really know how to solve this in pure maths . For the first part since you eliminated gravity and whatnot I translated this to the horizontal plane and assumed your vertical occurred when the ball has moved by 90 degrees rotation ...

The equation only relates potential with Kinetic energy it gives the velocity at the point at which accelleration stops and the projectile leaves . That velo is in the direction that the projectle has at that time. In My illustration this occurred at +45 dgrees because the rope ceases to turn...

Tricky stuff The type of equations needed are energy (potential and Kinetic ) But there are serious problems --- the dropping mass does not transfer all it's energy if for instance it hits the ground , I did a catapult design and simulation based on the following a) I assumed the start...

To the Sam The body is a high percentage saline solution ( like a big bag of sea water from whence we came ) -- the electrical current is distributed over the whole it is not branched or look like lightning --- exactly how is determined by the area of contact to the electrodes , and...

To All So a question remains does an object have a color ?? The answer is that it does ! and this is dependent upon it's temperature for most at room temerature that color is somewhere in the infra red . Ray.

Forgive me if I missunderstand but ( to the left ?? ) left of what , surely a seesaw can only launch in one direction (along it's length ) . But aside from that some things appear missing --- the height of the seesaw matters because that resricts it's movement also the actual launch point...