Recent content by cheah10

For me, this experiment sounds fine. Remember to keep some of the variables to be constant though. Can you tell me all the variables you can think of which must be kept constant?

This question just simply needs the knowledge of double angle formula in trigonometry. You just need to change from sin A to sin(A-n) + sin(n). So, what's the double angle formula for sin A?

For me, the 2nd method is totally fine. For the 1st method, can you explain whether it is a=(F/m)-ukg or it is a=F/(m-ukg)?

ignore my previous post

For "a)", how do you know you are wrong? For "b)", can you tell us what working did you do to reach the answer for acceleration and force?

First, are the walkers living things? If yes, then are the four forces caused by the intentional movement of the walkers? or are they forces due to nature?

in my opinion, v^2 should be proportional to displacement, if acceleration is constant, as shown by you just now, which is v^2 = v_{i}^2 + 2a_c(x - x_{i}). Is it possible that there is a misprint on the textbook?

ok, I'll guide you from here. 1st, tell me, what are all the forces you can identify? Maybe it's better if you draw a free body diagram for both the slope and the mass, and upload it here.

Ok, actually whenever you believe you are correct, you should just be confident and not doubt yourself. You are correct in this question!

Before we answer your question, do you think you are correct?

what kind of effect would you want? observations? or identify all forces? make it clear.

For second question: I agree with you guys too!

Tell us what do you know about the 4 types of energies.

I'll give you a tip: gas is compressible.

ok but the thing is, isn't it that the galvanometer and the 2.0kΩ resistor are on different branches? then why does the calculation involve the 2.0kΩ resistance?