Recent content by Apoorv3012

Those are viscous forces that cause the heat inside this type of system, viscosity is ànalogous to friction in such system with a working fluid. Viscosity acts on fluid-fluid interaction and also fluid- solid interaction, according to the nature of viscous behaviour of the fluid, fluids are...

Thank you sir, that really helped.

No, do not add the forces, draw a free body diagram for each body individually. For example, draw body A and then show all the forces on it, including the gravitational force, frictional force on left side (with the wall) and frictional force on the right side (with the body B). Then solve for...

Yes, sorry I forgot to add that.

What is enthalpy of a system based on macroscopic POV of thermodynamics and not chemistry? And how do we use it to calculate the total heat transfer in isentropic processes?

Radiation is energy, heat is also energy all forms of matter can emit and absorb radiation. Emission and absorption of radiation depend upon the temperature of that matter, the matter at higher temp. performs more emission than absorption and vice-versa. Sun is at very high temperature, i.e. in...

Friction does not depend upon velocity of the object but the material of the surface(over which object is moving) and the object, also friction depends upon the normal force N acting on the object by the surface. Also on a microscopic level friction is caused by electrostatic forces between the...

Yes now I get the intuition but it was given very bluntly in my book, but why do we give it a fancy name as work although we can substitute it with gain in energy or expenditure of energy.

Thanks Dave ,I read some further on other threads and understood that happens because the light's speed change per medium and since it's frequency remains constant, the wavelength must change.

Actually I read multiple threads over this and I leaned that you are right, when a system reaches a state of energy (like me on bed) then it doesn't need any energy for any exerted force (normal force and gravitational pull), but if a system's energy is to change then expenditure or gain of...

The idea of force is actually very absurd (in a way) and it actually is an extention of energy. Let me point out a contradiction. The terms "work" and "energy" both are used to describe each other, while work is basically nothing but energy. We use force just because it can be easily measured...

I agree with you mate. If we stop talking about what is taught first but what is more fundamental then the answer is very clearly energy.

Does the wavelength really change after refraction?

My name is Apoorv, a 20 year old male from India who is fascinated with science but get out of touch with busy schedules. In my work I am not able to find many people ready to discuss some physics. So, here I am wanting to start some discussion to give my POV on things and to listen. Learning...