Physics, 25.12.2019 02:31 mjlchance367

Which of the following statements is true about the scientific process? the hypothesis is always supported in the end / you can change the hypothesis if the experiment is not supporting it/ your hypothesis must be testable/ you can change the data if it doesn’t support the hypothesis.

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Answer from: slowik9467

Your hypothesis must be testable.

Explanation:

Scientific process or scientific method is the approach which is followed so as to obtain the answers of the scientific questions and to determine the reasons behind the cause of natural processes.

It involves making an observation, framing a hypothesis, making prediction on the basis of the set hypothesis, testing the prediction by experimentation and concluding results.

Among the given option, Your hypothesis must be testable is true. This is because of the fact that a hypothesis is based upon presupposed assumptions which is formulated on the basis of limited evidences. The content of the hypothesis must be testable by application of suitable scientific process or methodology. The outcomes of the testable hypothesis should be valid, authentic and acceptable by the scientific society.

Answer from: Quest

we need answer choices

Answer from: Quest

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.

$_a^z\textrm{x}\rightarrow _{a-2}^{z-4}+_2^4\alpha$

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.

$_a^z\textrm{x}+_{-1}^0\textrm{e}\rightarrow _{z-1}^a\textrm{y}$

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 $\gamma -radiations$ . this process does not change the mass number.

$_a^z\textrm{x}^*\rightarrow _a^z\textrm{x}+_0^0\gamma$

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 $\beta ^+$ -decay. in this the mass number remains same.

$_a^z\textrm{x}\rightarrow _{z-1}^a\textrm{y}+_{+1}^0e$

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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