Physics, 07.09.2019 19:10 isabeltorres5

Discuss how systematic and random errors influence the precision and accuracy of an experiment.

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Answer from: Jasten

Answer and Explanation:

For this we first define:

1. Systematic Error:

These errors arise as a result of faulty instrument or faulty design of the experiment. These are repeated errors through out the experiment.

2. Random Error:

These errors can not be predicted and do not result in repeated inaccuracies.

These can be referred to the variation in the measured readings.

3. Accuracy:

This term refers to the closeness of the recorded vales to the actual value or standard.

4. Precision:

This term refers to the closeness of the readings taken to each other.

The accuracy and precision in case of systematic error can not be enhanced by repeated measurements and in case of random error, accuracy and precision may be improved by careful experimenting and measuring at the experimenter's end.

Answer from: shahrukhafridi2668

What are some sources of error in your experiment? What are some ways that you could improve the accuracy and precision of the measurements?

Explanation:

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.

Answer from: Quest

u can delete ur account.

1. go on google and write

2 open this and click on your profile pic and if your profile is not appearing, then u have to log in.

3. when u click on your profile pic, there appears four options on the top.

4. click on the 1st option and scroll down and go at the bottom.

5. click on edit profile.

6. there appears a option 'prefernces' and at that option at the right side , 'edit' is written.

7. click on the edit option.

8. there is a option " i want to delete my account" and click on that.

hope this u

and ur welcm

: )

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