A beam contains `2 xx 10^(8)` doubly charged positive ions per cubic centimeter, all of which are moving with a speed of `10^(5) m//s` . The current density is

A beam contains 2.0xx10^8 doubly charged positive ions per cubic centimeter, all of which are moving toward north with a speed of 1.0xx10^5 ms^(-1) . (a) what are the magnitude and direction of the current density vecJ ? (b) can you calculate the total current i in this ion beam? If not what additional informaiton in needed.

A beam contains 2.0xx10^8 doubly charged positive ions per cubic centimeter, all of which are moving toward north with a speed of 1.0xx10^5 ms^(-1) . (a) what are the magnitude and direction of the current density vecJ ? (b) can you calculate the total current i in this ion beam? If not what additional informaiton in needed.

An ionization chamber with parallel conducting plates as anode and cathode has 5 xx 10^(7) electrons and the same number of singly-charged positive ions per cm^(2) . The electrons are moving at 0.4 m//s . The current density from anode to cathodeis 4 mu A//m^(2) . The velocity of positive ions moving towards cathode is

An ionization chamber with parallel conducting plates as anode and cathode has 5 xx 10^(7) electrons and the same number of singly-charged positive ions per cm^(3) . The electrons are moving at 0.4 m//s . The current density from anode to cathodes 4 mu A//m^(2) . The velocity of positive ions moving towards cathode is

Find the de-Broglie wavelength of an electron moving with a speed of 5.2 xx 10^(5) m//s

Calculate the de Broglie wavelength of proton, if it is moving with a speed of 2 xx 10^5 m//s .

What is the refractive index of a medium in which light travels with a speed of 2 xx 10^(8)m//s ?

A particle moves with a speed of 1.5 xx10^(8) m/s. The ratio of its mass to its rest mass is

What is the refractive index of a medium in which light travels with a speed of 2 xx 10^8 m//s ?