Two Tiny Metal Spheres Are Fixed to the Ends of a Non-Conducting

question 78

Multiple Choice

Two tiny metal spheres are fixed to the ends of a non-conducting string of length
) Equal charges,+q,are placed on the metal spheres.Randall says that the force on the string has magnitude
) Tilden says that the tension in the string has magnitude
) Which one,if either,is correct?

• A)Randall,because both charges exert forces on the string,but the tension is .
• B)Tilden,because both charges exert forces on the string,but the net force is .
• C)Both are correct,because both charges exert forces on the string.
• D)Neither is correct,because both the tension and the force have magnitude .
• E)Neither is correct,because the tension is ,but the net force is 0.

---

Definitions:

Stratified Random Sampling

A sampling method that involves dividing a population into subgroups and randomly selecting samples from each group, ensuring representation.

Sampling Techniques

Methods used in statistics to select individual observations intended to yield some knowledge about a population of concern.

Primary Research

The collection of original data through direct methods such as surveys, interviews, experiments, or observation, as part of a research study.

Secondary Research

The process of synthesizing existing research and information, as opposed to collecting new data.