Xrays of wavelength 0.0100 nm are directed in the positive direction of an x axis onto a target containing loosely bound electrons. for compton scattering from one of those electrons, at an angle of 180°, what are (a) the compton shift, (b) the corresponding change in photon energy, (c) the kinetic energy of the recoiling electron, and (d) the angle between the positive direction of the x axis and the electron’s direction of motion?

a)  

b)

c)

d)= 0 and the direction of motion is equal to zero

Explanation:

a) compton shift

b) the new wavelength

C)By conservation of energy, the kinetic energy of recoiling electron is equal to the magnitude of energy between the photon energy

d) the angle between the positive direction of motion

             = 0

the direction of motion is equal to zero.

b.

explanation:

10.0

answer: the correct answer is 1.

explanation: there are various process in which a radioactive nuclei decays:

1) alpha decay: in this process, a heavier nuclei decays into lighter nuclei by releasing alpha particle. the mass number is reduced by 4 units.

2) electron capture: in this decay process, a parent nuclei absorbs an electron and gets converted into a neutron. simply, a proton and an electron combines together to form a neutron. mass number does not change in this process.

3) gamma ray emission: it is a decay process in which an unstable nuclei gives excess energy by a spontaneous electromagnetic process. this decay releases . this process does not change the mass number.

4) positron emission: it is a type of decay process, in which a proton gets converted to neutron and an electron neutrino. this is also known as -decay. in this the mass number remains same.

from the above information, we see that only alpha-decay is producing a change in the mass number of the nucleus.