1)Which of the following statements is true about electric forces?
A)electric forces cause objects to only attract each other.
B)electric forces cause objects to only repel each other
C)electric forces cause objects to repel or attract each other
D)electric forces have no effect on each other
the answer is C.
2)A negatively charged balloon sticks to a wooden door. However, an uncharged balloon does not stick to a wooden door. What is the nature of the charge on the wooden door?
A)electrically neutral
B)positively charged
C)conductor
D)lacking protons
I got 3 different answers each time for A-C, but my final answer is A.
1 A)
2. The overall charge of the door may be neutral if it is not electrically grounded, but the door area in contact with the balloon is charged positively in any case, due to polarization and induction. I don't whether to advise you to answer A or B, because the question is too vague about grounding and which part of the door they are referring to.
1) elctric forces do both that's why like charges repel and opposites attract
Yes, I meant to write C. for (1) I was concentrating on answering your second question. My mistake.
To determine the correct answers to these questions, let's break down the reasoning behind each answer.
1) Regarding electric forces, the statement options are:
A) Electric forces cause objects to only attract each other.
B) Electric forces cause objects to only repel each other.
C) Electric forces cause objects to repel or attract each other.
D) Electric forces have no effect on each other.
To determine the true statement, we need to consider the nature of electric forces. Electric forces result from the interaction of charged objects. Like charges repel each other, while opposite charges attract each other. This means that both attraction and repulsion can occur due to electric forces. Therefore, the correct answer is C) Electric forces cause objects to repel or attract each other.
2) In the scenario described, a negatively charged balloon sticks to a wooden door, while an uncharged balloon does not stick. We need to determine the nature of the charge on the wooden door. The options are:
A) Electrically neutral
B) Positively charged
C) Conductor
D) Lacking protons
A wooden door is typically electrically neutral, meaning it has an equal number of positive and negative charges or no net charge overall. If a negatively charged balloon sticks to it, it indicates that the excess negative charge on the balloon is attracting the positive charges within the wooden door, resulting in an adhesive force. Hence, the correct answer is A) Electrically neutral.
To summarize:
1) The correct answer is C) Electric forces cause objects to repel or attract each other.
2) The correct answer is A) Electrically neutral.