Recent content by Tcat

Hi I am having trouble relating power to the electric field amplitude, I know that P=IA and E=cB, could someone please help? The problem reads: What electric-field amplitude is required to transmit an amount of power equal to that handled by modern transmission lines (that carry voltages and...

Could someone help me with this problem? I'm not sure what I am doing wrong?

u X v, but what is u and what is v in the formula? ((3.11 x 10^4)*(1.63T)) - ((3.11*10^4)*(0.980T)) = (2.02*10^4), so ((2.02*10^4)(1.22*10^8))/(1.81*10^-3) = acceleration... Is that right?

Hi I need help finding what the acceleration is for the following problem: A particle with a mass of 1.81x10(-3) kg and a charge of 1.22 x 10(-8) C has at a given instant a velocity v=(3.11 x 10(4) m/s)j. What are the magnitude and direction of the particle's acceleration produced by a uniform...

How else the energy relate?

The voltage=Energy/Length

R=V/I, but I is not given, so does "I" have something to do with time?

A coil is to be used as an immersion heater for boiling water. The coil is to operate at a voltage of V and is to heat an amount of water with a volume of v by T degrees C in a time interval of t seconds. Use 4190 for the specific heat capacity of water and 1000 for the density of water. How...

Suppose that a person has a resistance of 13.0 kiloohms as part of a circuit which passes through his hands. This person accidentally grasps the terminals of a power supply with a potential difference of 16.0 V. PART A:If the internal resistance of the power supply is 2100 ohms , what is the...

Suppose that a person has a resistance of 13.0 kiloohms as part of a circuit which passes through his hands. This person accidentally grasps the terminals of a power supply with a potential difference of 16.0 V. PART A:If the internal resistance of the power supply is 2100 ohms , what is the...

Suppose that a person has a resistance of 13.0 kiloohms as part of a circuit which passes through his hands. This person accidentally grasps the terminals of a power supply with a potential difference of 16.0 V. PART A:If the internal resistance of the power supply is 2100 ohms , what is the...

In this one problem I am given I=3.20A, L=4.2m, cross-section=.00220m, n=8.85*10^28, and e=1.6*10^-19. I am using an equation that is set up like this to find the t=((l*w)*n*q*L)/I When I calculate ((0.00220m)^2*(8.85*10^28)(1.6*10^-19)*(4.2))/(3.2) I get 8.99*10^4 and for some reason the sig...

Capacitor Problem! Hi I have a problem where the applied potential is V_ab, Capacitors C1 and C2 are in parallel, and the combination is in series with C3. Now I'm trying to find the charge q1 on the capacitor C1. I thought that q1 = V_ab*((C3*C1*C2)/(C3 + C2+ C1)), but it is wrong. Can someone...

Two stationary point charges and +3.00*10^-9 C and +2.00*10^-9 C are separated by a distance of 50.0 cm. An electron is released from rest at a point midway between the two charges and moves along the line connecting the two charges. What is the speed of the electron when it is 10.0 cm from...

Thank-you so much for your help! I have a part 2 of the problem that says "A point particle with mass, m, and negative charge, -q, is free to move along the x-axis (but cannot move off the axis). The particle is originally placed at rest at and released. Find the frequency of oscillation of the...