Recent content by Weam Abou Hamdan

The initial velocity is given: its magnitude is 13.4m/s. The final velocity has a magnitude of 0m/s since the car is no longer moving. The displacement is given: its magnitude is 17.9mm (or 0.0179m). Therefore, to find the acceleration, the following equation can be used: Vf2 - Vi2 = 2ad (0)2 -...

Hello, According to Special Relativity, the mass of an object must increase as its speed approaches the speed of light. m=m0γ In the formula that allows us to calculate the kinetic energy of a body, KE=0.5mv2, should we take into consideration such increase in mass? Weam Abou Hamdan Wednesday...

Is there a generalized formula for the distance between two molecules in the case where no forces are being applied at all?

Hello, Let us imagine a rod resting on a frictionless horizontal surface such that the rod is made up of 2 identical molecules. Let these molecules be named A and B from left to right. If we pull A to the left and B to the right with forces of equal magnitude, the rod must remain at equilibrium...

In the second case where the water can get in the space, is there a Normal Force exerted by the bottom surface? If so, how?

I did say "solid". What i meant is one of the particles on the bottom part of the solid. Replacing the solid with a zero size point particle would be effective as well.

It doesn't really make sense though. There's the solid particle. Below it is the liquid particle. Below that is the container particle.

In that case, that should mean there is no Normal Force because there is no contact. However, there is a Normal Force.

What I mean is how can the solid experience both a Normal Force and the Buoyancy Force if there can only be one material below the solid (either the bottom surface or the liquid)?

How is the bottom surface able to exert a Normal Force on the solid, then?

Are you saying that, since the solid is in contact with the bottom surface, then pressure from the liquid only exists on the upper surface?

Hello, Let us imagine a solid immersed in a liquid in a container such that the density of the liquid is less than the density of the solid. This means that the solid must sink. Let us study the solid when it reaches the bottom surface and is now at rest. The forces acting on the solid when it...

It really is interesting. Thank you for the suggestion!

Why would the force exerted by the string in Galileo's experiment disappear during the free fall?

I wouldn't mind the mathematics despite its difficulty. I'll manage. All I need is mathematical proof.