Thank you for your help. I used the quoted value from the textbook but I’ve just spotted that value for copper below it is identical so it could be a mistake in the book. Thanks again
I’m fine with part a, answer 3.3 x10^6 but I’m getting 0.00045 for part b when it should be 2.8x10^-4, what am I missing?
e = (1500x18)/(1.3x10^11 x 0.000452389)
The answer is 127.04g. I’m getting close but can’t get the answer.
Using 9.81 for gravity, the force where the balance is is 2.10(58146)N
As it is balanced
2.10N x 0.29m = W x 0.50m where 0.50 is the centre of mass
That gives W = 1.22N
= 124.5g?
I've just read somewhere that acceleration is zero when an object is at terminal velocity? I think it's wrong but wanted to check if I'm right?
Yes the resultant force is zero but gravity doesn't disappear so presumably acceleration due to gravity is constant? Terminal velocity means constant...
Homework Statement
An electric circuit consists of 3 identical resistors of resistance R connected to a cell of emf E and negligible internal resistance. What is the magnitude of the current in the cell? (in the diagram two of the resistors are in parallel with each other then the other in...