Two power lines, line 1 and line 2, both of length ll = 56 m, are strung east-west between two towers. line 1 is r12 = 2.4 m directly above line 2. the current in both power lines is il = 75 a to the west. assume the power lines are straight and you can use the approximation r12 < < ll. a) find the magnitude of the magnetic field b21, in teslas, produced by line 1 at line 2.b) calculate the magnitude of the magnetic force f21, in newtons, that the current in line 1 exerts on line 2.c) assume a typical power line has a mass of 890 kg per 1000 m. how many times larger would the current in both lines have to be for the magnetic force on the line to balance the force of gravity?

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.

object 2 because all the other ones are wrong

he made 11 calls in one day

grav force prop 1/r squared 2r all squared is 4rsquared 1/4rsquared quartered