A celebrity holds a press conference, which is televised live. A television viewer hears the sound picked up by a microphone directly in front of the celebrity. This viewer is seated 2.1 m from the television set. A reporter at the press conference is located 4.1 m from the microphone and hears...
Suppose that an ion source in a mass spectrometer produces doubly ionized gold ions (Au2+), each with a mass of 3.27 x 10^-25 kg. The ions are accelerated from rest through a potential difference of 1.40 kV. Then, a 0.600 T magnetic field causes the ions to follow a circular path. Determine the...
In a lightning bolt, 14 C of charge flows in a time of 1.5 x 10^-3 s. Assuming that the lightning bolt can be represented as a long, straight line of current, what is the magnitude of the magnetic field at a distance of 27 m from the bolt?
do i use 27 m as the radius in the equation
B =...
a long, straight wire carries a current of 52 A. The magnetic field produced by this current at a certain point is 9.0 x 10^-5 T. How far is the point from the wire?
i figured i should be using the equation
F = I L B sin 90
but i can't find the force. any help?