Recent content by Jonathan1218

I went to calculate the model with air resistance, I do not know how to include KE lost to angular momentum yet. And the model gave me a concave down parabola which is not supposed to happen right? I used the formula Fnet= Fgravity-Fdrag and the drag formula I used was F=-bv^2. b was 0.7 ish for...

Oh its like ones that go crazy, say different displacement same time which would make the graph not even a function.

Not familiar with partial fractions, but I am comfortable with polynomials and hopefully that level of algebra . I ll try to get comfortable with it ASAP and maybe fit in the equation by tomorrow.

Oh. That makes sense. Appreciate that.

I am evaluating, the problem is I can't incorporate the drag equation into the model just as you said it was difficult to solve. For context, the timings were done manually with stopwatches and the plane was made out of smooth wood, slightly convex so a bit of outliers due to oscillations. For...

Or do you mean angular momentum and stuff? If that makes a difference then I would just go back to learning theory since I can't even explain a rolling marble...

I am "inclined" to believe that the friction of a rolling sphere can be neglected when measuring in cm for a distance of 3m, but please correct me if you can find a formula to do so. Pun intended.

O.O Thx , I should look into that, I must have made some errors along the way. Yes it was a gutter but I chose to neglect the friction of that since the shape is a sphere, hopefully it shouldn't matter too much. I am trying to get my maths model to fit within 5% of experimental values, or at...

I'm sorry I did not mean to be arrogant The formula I used was Fdrag=-1/2CpAv^2 p=air density C=1/2 A=cross section and I have used (4.9sin(5)t)^2 for velocity squared since v=at right ? SInce initial velocity is zero. What did you mean by dimensions? I don't know how to include anymore...

A marble rolls down an inclined plane with an angle of elevation of 5 degrees, roughly 4.9sin(5)m/s/s, and at normal pressure temperature NPT what would I need to add to S=1/2 at^2 to include the air resistance considering the marble is a sphere with a radius of 0.85cm and mass of 20g. The whole...

So can I say the overall current in a parallel circuit is greater than in a series circuit?

Ahhh thank you I get it now

I am confused since my textbook says current in parallel circuits are shared between junctions. XD . Am I missing something or should I lodge a complaint with my teacher? And yes i really would like to start getting familiar with circuits so please recommend some materials to me. Much thx

So maybe I should rephrase to: does the amount of current passing through the light bulb (I) affect its brightness? Sorry if I am still being unclear:(

If two light bulbs have the same voltage but one with a lower current does it make one dimmer than the other? I’m confused why lights in parallel circuits don’t get dimmer even tho there is less current. Thx for replying