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...
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