empts Not allowed. This test can only be taken once mpletion This test can be sa
ID: 1885961 • Letter: E
Question
empts Not allowed. This test can only be taken once mpletion This test can be saved and resumed later n Completion Status ESTION 1 n sciestfic tesearch, a theory s expected to be tested experimentally by more than one research group because Othis may oliminate the impact of hidden systematic erars Ob this will eliminate the impact of random emors c to be acceptable experimental results must be reproductie o d scienific theories lose validity in Tme, so they must be reconfiemed periodically O Both (a) and (c) are true QUESTION 2 One of the earlest observations of modern physics wws that feling objects will accelerale at the sase rate provided that only their weight acts on them One can inmediately conceive an esperiment to best this idea: just drop ofjech different mass from the same height and verly that they hit the ground at the same Sime in this experiment, what kind of variables are the mass, the taling time and te height h his order? O a dependent, independent, contr Ob control, independent, dependent O 5 independent, dependent, contro O d independent, control, dependen O systematic, random standardExplanation / Answer
Answer 1 : Option E - Both A & C options are true
The theory is expected to be tested by more than one research group so that they may eliminate the impacts of hidden systematic errors, as more than group may be able to test in different angle and will be able to review the desired performance from the proposal.
This is to be acceptable and the experiment result needs to be reproducible, so that we can expect the similar result in each and every experiments. Reproducibility is very important as to repeat the same outcome from the proposal.
Answer 2: Option C – Independent, dependent, control
Mass = Independent, as it does not impact the time to reach to ground, as Mass do not vary with respect to the falling time.
Falling Time = dependent – This i purely depends upon the distance from where the mass is dropped, hence the falling time is dependent of height of the object.
Height = Control, as one can control the height of the objects for the experiment.
Answer 3: Option D = Standard Error
The air resistance results in standard error to the experiment.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.