Three 250 μC Charges Are Placed on Tiny Conducting Spheres at at the Ends

question 33

Multiple Choice

Three 2.50 μC charges are placed on tiny conducting spheres at the ends of 1.00 m-long strings that are connected at 120° angles as shown below.The magnitude,in N,of the force on the knot at the center is

• A)0.
• B)3.75 × 10−².
• C)5.63 × 10−².
• D)6.50 × 10−².
• E)7.50 × 10−².

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Definitions:

Outgroup Analysis

A method in phylogenetics used to help identify the evolutionary relationships between species by comparing characteristics with those of an external group.

Derived Characters

Attributes in organisms that are passed down from a common ancestor.

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The evolutionary history and relationship of an organism or group of organisms.