How Does a Graph Demonstrate Newton's Law of Cooling?

AI Thread Summary
The discussion centers on how to demonstrate Newton's Law of Cooling using a graph of temperature difference over time. The user seeks clarification on what "show" entails in the context of their assignment, questioning whether it involves manipulating equations or substituting values. They are looking for guidance on how to illustrate that the rate of cooling is proportional to the temperature difference, as predicted by Newton's Law. Suggestions include drawing a suitable graph and analyzing the data to confirm the law's applicability. The conversation emphasizes the importance of visual representation in understanding the relationship described by Newton's Law of Cooling.
Procrastinate
Messages
155
Reaction score
0
Hi, I have a graph of T-TR vs. Time. These values were given to us for an assignment. However, the question then says using these values, "show" that it obeys Newton's Law of Cooling.

I can't ask my teacher because it's meant to be done on your own but show means many things to me.

Does show mean manipulate the equation from the graph to that of Newton's Law of Cooling? Does it mean that I have to substitute values into see if Newton's Law of Cooling works?

Could someone provide me with a few ideas? Thanks.
 
Physics news on Phys.org
Draw a suitable graph of the data.
From the graph, show that the rate of cooling is proportional to the temperature difference. (Which is what Newton's Law would predict in this case.)
 
I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
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 hanging 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