Recent content by Taniaz

I found this graph online somewhere but I don’t think it’s right.

Then I think I/t won’t be constant. But as for this question it should look like a square wave right? Constant in one direction first, then spikes vertically upwards in the opposite direction and then constant till the current becomes constant?

Yes but when the emf drops to the negative value, after that wouldn’t it just stay at that value till the current in coil p becomes constant?

Thank you. What about when it spikes downwards? Isn’t I/t still a constant so should the graph be something like a top hat function?

Homework Statement Two coils P and Q are placed close to one another. P is connected to a power supply whereas Q is only connected to a voltmeter and no supply (see attached diagram). The current in coil P is constant. An iron rod is inserted into coil P. a) Explain why during the time that...

Got it, thank you!

Homework Statement The pulleys in the figure (attached) are massless and frictionless, determine the acceleration of eah of m1 and m2, given that m1=4.00 kg, and m2=1.00 kg, and the surface is frictionless and horizontal. Homework Equations For mass m1: T1=m1a1 and mass m2: w2-T2=m2a2 For...

Hi Chales, thank you for your reply. I got the wavelength in air for part a to be around 458 nm. I used the constructive interference equation when one of the reflected waves has a half cycle phase shift 2t=(m+ 1/2)(lamda). I substituted lambda in oil = lambda in air / n using the equation...

Homework Statement An oil tanker spills a large amount of oil (n =1.47) into the sea (n = 1.33). a) If you look down onto the oil spill from overhead, what predominant wavelength of light do you see at a point where the oil is 390 nm thick? What color is the light? b) In the water transmitted...

Homework Statement Given 2 positively charged parallel plates with equal surface charge densities, calculate the electric field at a point outside the the parallel plates. Homework Equations E= (surface charge density) / 2(relative permittivity) for a single sheet. The Attempt at a Solution...

Alright, thank you!

Thank you for your replies. So it's all a guess at the end? There's no definite way to find out the absolute uncertainty like we could when given an equation?

Ok thank you. In the picture I attached, they asked us to measure the length of the wire using a ruler and then asked for the percentage uncertainty. In the mark scheme it says "Percentage uncertainty in L based on absolute uncertainty of 2mm to 8mm. If repeated readings have been taken, then...

Ah I don't know why I over complicated questions for myself. Thank you so much!

It's 5kHz which I understand now so it's measuring it after every 2 ms which is why the intervals as such. Yes and then it puts it back into a DAC.