Pump water from the well to the tank. Knowing the well is 4m deep, the pump is placed on the well mouth, the pump is 5m high from the tank, the total length of the pipeline is 20m. The diameter of the push pipe is equal to the diameter of the suction pipe 34, ignoring local friction, the coefficient of friction is equal to 0.013 The pump water flow is 2l/s. Calculate the total pressure of the pump to be overcome. Calculate the pump power given the pump efficiency is 0.7. Calculate the motor power knowing that the power supply is stable.​

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.

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elctricity and magnet is conversion to it