Question related to heat and thermal energy

AI Thread Summary
The discussion centers on identifying the incorrect statement regarding heat and thermal energy. Statements A, B, C, and D are accurate descriptions of thermal energy concepts. However, statement E is incorrect because heat flows from an object with a higher temperature to one with a lower temperature, not necessarily higher thermal energy. The consensus is that statement E misrepresents the principles of heat transfer.
oldezwe
Messages
1
Reaction score
0
Identify the incorrect statemet from the following:


A) The thermal energy of an object is the sum total of the kinetic energy of random motions of all its atoms/molecules.


B) Heat is the flow of thermal energy.


C) Temperature is a measure of the average kinetic energy of random motions of atoms/molecules.


D) A temperature difference is necessary for heat flow.


E) Heat flows from an object with a higher thermal energy into an object with a lower thermal energy.
 
Last edited:
Physics news on Phys.org
Which one do you think is the incorrect statement?
 
Last edited:
Thread 'Collision of a bullet on a rod-string system: query'
In this question, I have a question. I am NOT trying to solve it, but it is just a conceptual question. Consider the point on the rod, which connects the string and the rod. My question: just before and after the collision, is ANGULAR momentum CONSERVED about this point? Lets call the point which connects the string and rod as P. Why am I asking this? : it is clear from the scenario that the point of concern, which connects the string and the rod, moves in a circular path due to the string...
Thread 'A cylinder connected to a hanged mass'
Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
Back
Top