![subject](/tpl/images/cats/himiya.png)
Chemistry, 19.01.2021 09:20 iamsecond235p318rq
Charlotte completed an experiment in which she investigated and discovered that an electrically charged object can attract an uncharged object without any contact. She used a PVC pipe and small pieces of paper for her experiment. Each time, she rubbed the PVC pipe with a cloth to give it a charge and then held it over paper. What would be Charlotte's control group in this experiment?
1. Using the cloth and rubbing it against the PVC pipe
2. Taking the pieces of paper and rubbing it against the cloth
3. Not rubbing the cloth against the PVC pipe or the paper
4. Rubbing the cloth against both the paper and the PVC pipe
![ansver](/tpl/images/cats/User.png)
Answers: 1
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Other questions on the subject: Chemistry
![image](/tpl/images/cats/himiya.png)
Chemistry, 21.06.2019 17:10, PSBSolarYT
For which one of the following reactions is the value of δh° rxn equal to δh° f for the product? a. 2 h2 (g) + o2 (g) → 2 h2o (l) b. n2 (g) + o2 (g) → 2 no (g) c. 2 h2 (g) + o2 (g) → 2 h2o (g) d. h2o (l) + 1/2 o2 (g) → h2o2 (l) e. none of the above
Answers: 1
![image](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 08:30, dyanaycooper13
Analyze how limestone is weathered and identify the features that are formed as a result of this dissolution
Answers: 1
![image](/tpl/images/cats/himiya.png)
![image](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 22:30, skinniestoflegends
Consider a culture medium on which only gram-positive organisms such as staphylococcus aureus colonies can grow due to an elevated nacl level. a yellow halo surrounds the growth, indicating the bacterium fermented a sugar in the medium, decreasing the ph as a result and changing the color of a ph indicator chemical. this type of medium would be referred to as a differential and enrichment culture.
Answers: 2
You know the right answer?
Charlotte completed an experiment in which she investigated and discovered that an electrically char...
Questions in other subjects:
![Konu](/tpl/images/cats/mat.png)
Mathematics, 04.02.2021 20:10
![Konu](/tpl/images/cats/mat.png)
Mathematics, 04.02.2021 20:10
![Konu](/tpl/images/cats/en.png)
![Konu](/tpl/images/cats/biologiya.png)
Biology, 04.02.2021 20:10
![Konu](/tpl/images/cats/geografiya.png)
![Konu](/tpl/images/cats/biologiya.png)
![Konu](/tpl/images/cats/pravo.png)
Law, 04.02.2021 20:10
![Konu](/tpl/images/cats/en.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 04.02.2021 20:10