Electrical Charge Problem

A rubber rod rubbed with fur acquires a charge of -4.8 x 10 x -9 C. Is the charge on the fur positive, zero, or negative and why? What is the charge on the fur, and how much mass is transferred to the rod? I know the charge on the fur is positive - but why is what I really need help with, and the second part...

Magnitude of force

An electron and a proton are separated by 2.0nm. What is the magnitude of the force on the electron? What is the net force on the system? I know this part of the problem - zero.

Excess Electrons

A 2.5g copper penny is given a charge of -0.50 mC. How many excess electrons make up this charge? What is the percentage of the mass of these excess electrons to the mass of the penny?

Given 10V ac source, LRC circuit, Imax at resonance=2A ;f= 200Hz Imax = 1.2A;

Given 10V ac source, LRC circuit, Imax at resonance=2A ;f= 200Hz Imax = 1.2A; f=350Hz Imax = 1.5A What equations are used to find: resonant freq, and phase angle

To determine the resonant frequency given resonant current and currents at two other frequencies.

Given 10V ac source, LRC circuit, Imax at resonance=2A; f = 200Hz, Imax = 1.2A; f=350Hz, Imax = 1.5A Given these parameters what is the resonant frequency? Given these values what is the phase angle at f=250Hz?

Given 10V ac source, LRC circuit, Imax at resonance=2A; f= 200Hz Imax = 1.2A;

Given 10Vmax ac source, LRC series circuit, Imax at resonance frequency Imax=2A; f= 200Hz; Imax = 1.2A; f=350Hz Imax = 1.5A What equations are used and how are the values found? What is the resonant freq and the phase angle at 250Hz?

AC-LCR Circuits: Inductance, Capacitance and Frequency

Given 10V ac source, LCR series circuit, Imax at resonance=2 A; f= 200Hz Imax = 1.2A; f=350Hz Imax = 1.5A Given these parameters what is the resonant frequency and how did you get this value? What is L and C in the series circuit? Given these values what is the phase angle at f=250Hz?

Electric Potential and related - 3 Problems

(See attached file for full problem description)

Sinusodal electromagnetic wave w/ f=1.09E10 and field of B=1.2E-8T

Sinusoidal electromagnetic wave with f=1.09E10 and field strength of B=1.2E-8T find: wavelength, Amplitude of Electric field, and Intensity

Circuits

Please answer the following questions (attached) with full explanations thankyou.