Recent content by LonelyElectron

Homework Statement Derive an equation for the velocity vx(t), vy(t) of the particle. - my teacher writes this oddly, that means the velocity in the x direction at any point in time, and the velocity in the y direction at any point in time. Calculate the initial velocity of the particle...

Okay, so: Ip/Is = Vp/Vs Ip=VpIs/Vs Ip=(120 V)(0.10 A)/40 V Ip=0.3 Still getting 0.3... Am i manipulating the equation wrong?

I have the same question and no matter how I many times I try I always got 0.3 with the Ip/Is = Vp/Vs, and with the Ip/Vp = Is/Vs... I then did P=VI, which got 0.03 A, but the power I used in the equation was the power given for the primary circuit. Does that mean it won't work with secondary...

Problem: Look at the following diagram: · Copy the diagram and then label the poles for the induced magnetic field and the direction of the induced current · Explain what would happen to the magnetic field and the current if the direction of motion of the magnet is reversed ·...

Okay! So my answer is good for this year, and I'll be better prepared for next year! Thanks so much!

WAIT WAIT WAIT. It can be done either way. Ohm's law just states that V=IR, the V and the I can be a slope or a point. Both are possible!

I am assuming (similarly to the acceleration in those distance time graphs I think it was) that if the resistance were to vary somewhere along the wires, resulting in a non-linear graph, that the resistance would be the slope between any two points, identifiable using tangents. Right? That means...

Not entirely sure which two you are referring to. Resistance is measured in Ohms and represented by the constant R. The formula for calculating resistance is Ohm's law; V=IR, right?

Hi all! Wanted to know if this is along the right lines, or if I'm missing anything... Any help is greatly appreciated :) 1. Homework Statement Explain the connection between a graph of potential difference versus current, and Ohm’s law. Homework Equations slope = rise/run V=IR R=V/I The...

I CANT BELIEVE I MISSED THIS. YOURE BRILLIANT.

Sorry to resurrect this post, but I am doing the same question and am wondering about the formulas used... why is the value of c = 2100? Isn't the heat capacity of water 4200 J?

Okay perfect! So its correct? You guys are the best. I hope you know how much your help is appreciated!

Homework Statement A container holds 8.0 kg of water at 25 ˚C. How much energy must be added to the water to create 2.0 kg of steam? Homework Equations To be honest, not sure. SO MANY equations were given, and I don't know what is a variation of what. The Attempt at a Solution Q_total =...

Nope, still on lesson 15 . Best of luck then! Nice to meet a physics buddy in the same "class".

Brilliant on your part! I can't believe I switched my values like that in number 2... Here is the updated. Look better? As for kWh, not sure I understand. Physics doesn't seem to be my forte...