Recent content by shreder

all i wanted to know was if without weight there still would be a normal force this all started because my physics teacher that has only a degree in chemistry thinks she is smart "the normal force has nothing to do with gravity" well thank you all for posting your answers

when i said there is no gravitational force acting on the ball i meant no external force to the system there is simply a ball on a table in space both objects are at rest there are no forces acting on them except for the gravitational force between them (forget the space ship) i...

imagine there is a ball on a table on a spaceship that is not moving there is no gravitational force acting on the ball will there be a normal force

http://http://education-portal.com/cimages/multimages/16/photonpar.jpg is this image correct does the photon move in a pattern like a wave?

i was having this argument with a friend that said that physics formulas are found by performing experiments and in his words "changing the variables and watching how the result changes" i found this ridiculous but i want a professional opinion (because i know that some formulas are in fact...

what if you touch two object that are in thermal equilibrium with each other and one of them feels like its colder than the other. does that body have a high thermal conductivity or a high heat capacity (the object feels cold because your hands are at a higher temperature than the object)

I) is it physically correct to say that something is hot or cold II) if something is cold do you say that it has a high heat capacity or high thermal conductivity

can you quote the exact words from the book i don't quite understand what you mean

if you know the position why can't you know the momentum isnt p=mv and v=dx/dt its the only doubt i have so far please help