Rating you 5 star if you can solve any asap 1.A student wants to measure gravitational acceleration
Design an experiment for this student. (50 points)

I-Give detailed information about the Theory-Physics Law behind the desinged experiment. (10p)

II-Give detailed information about the apparatus used for designed experiment. (10p)

III-Give detailed information about the procedure/method for designed experiment. (20p)

IV-Give detailed information about the neccesarry precautions required to minimize the error in designed experiment. (10p)

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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.

an energy transformation flow diagram is shown

where is it ?

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.