A control group in a scientific experiment is a group separated from the rest of the experiment, where the independent variable being tested cannot influence the results. This isolates the independent variable 's effects on the experiment and can help rule out alternative explanations of the experimental results.
2 maybe I’m not sure but the app told me to answer some questions and I don’t know anything to be honest I hope someone will come and help you have a nice day
Because the friction on the surface you are sliding on and the friction of the crate, go against each other. So once you start moving the friction will still be there but you now have the momentum to push past the starting point.
The metric unit is the Newton (N), or the
Answer:
Explanation:
Given:
- length of a steel-string,
- area of the string,
- Young's modulus of the steel,
- force of tension on the string,
We have the relation for change in length:
