The k-shell ionization energy of iron is 8500 ev, and it's l-shell ionization energy is 2125 ev. what is the wavelength of kalpha x-rays emmited by iron?

Explanation:

First of all, we need to calculate the energy of the x-ray photon emitted during the transition from K-shell to L-shell, and this energy is equal to the difference in energy between the two levels:

Converting into Joules,

Now we know that the energy of the photon is related to its wavelength by:

where

h is the Planck constant

c is the speed of light

is the wavelength

Re-arranging the equation for , we find

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles

the answer is the first electromagnet (a). this is because it has more coils around the ferromagnetic material. increasing the number of coils increases the surface area in which the metal interacts with the current in the coil. this enables more atoms in the metal to become aligned hence becoming more magnetized.