Multiple Choice help:

* _____ forces between charges are enormous in comparison to ______ forces. *

A. electrical, gravitational (possible?)
B. gravitational, electrical (possible?)
C. positive, negative (wrong, I think)
D. negative, positive (wrong, I think)

According to the review sheet, even a small charge of 10 x 10^-9 (or .0000000001) can result in large forces.

Please explain what that statement would mean for the multiple choice review. I think that the answer should be A according to the statement from the review sheet. Additionally, I think that both C and D can be ruled out as wrong.

It is a bad question, as what if the charges were 2 electrons each, and the masses involved were very enornous, such as in two dwarf stars.

But ignoring that, electrical forces are in general much larger than gravitational forces. And, after all, Einstein raised the question that gravitational forces may not exist at all, they are the figment of our perception of space and time warping.

Go with answer A, in general, it is truer.

You are correct. Based on the statement from the review sheet, a small charge can result in large forces, indicating that the electrical forces between charges are enormous in comparison to gravitational forces. Therefore, the correct answer would be A: electrical, gravitational.

You can eliminate options C and D because they refer to positive and negative charges, which are not being compared in terms of magnitude in the question. The question is asking about the comparison between electrical and gravitational forces, so options C and D are unlikely to be correct.

Let's break down the statement and review the options:

The statement says that even a small charge of 10 x 10^-9 (or .0000000001) can result in large forces.

Now let's go through the options:

A. electrical, gravitational: This option suggests that the forces between charges are enormous in comparison to gravitational forces. It aligns with the statement mentioned in the review sheet. So, option A is a possible correct answer.

B. gravitational, electrical: This option suggests that the forces between charges are enormous in comparison to gravitational forces. However, according to the statement on the review sheet, it implies the opposite. Therefore, option B seems unlikely and does not align with the information provided.

C. positive, negative: This option refers to the charges themselves rather than the forces between them. It does not relate to the information given in the statement, so option C can be ruled out.

D. negative, positive: Similar to option C, this option refers to the charges themselves and not the forces between them. Therefore, option D can also be ruled out as it does not align with the information provided.

Based on the explanation above, it seems that your assessment is correct. Option A, electrical forces being enormous in comparison to gravitational forces, is a possible correct answer according to the statement on the review sheet.