The dipole moment of the water molecule(h2o)is6.17×10−30c⋅m. consider a water molecule located at the origin whose dipole moment, x=3.00×10−9 meters, points in the positive푥direction. a chlorine ion(cl−), of charge−1.60×10−19c, is located at푥=3.00×10−9m. assume that this푥value is much larger than the separationbetween the charges in the dipole, so that the approximate expression for the electric field along the dipole axis can be used. what is the magnitude of the electric force that the water molecule exerts on the chlorine ion?

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.

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west