A +20-NC Point Charge Is Placed at One Corner of a a Square

question 21

Multiple Choice

A +2.0-nC point charge is placed at one corner of a square (1.5 m on a side) , and a −3.0-nC charge is placed on a corner diagonally away from the first charge. What is the magnitude of the electric field at either of the two unoccupied corners?

• A) 20 N/C
• B) 14 N/C
• C) 4.0 N/C
• D) 12 N/C
• E) 8.0 N/C

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Definitions:

Metabolic Pathways

Sequences of chemical reactions that occur in a cell, transforming substrates into products and energy.

Sunlight

The natural light emitted by the Sun, which is a primary energy source for Earth's climate system and necessary for photosynthesis in plants.

Photosynthesis

The process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water.

Electron Transport Chain

A series of complexes that transfer electrons from electron donors to electron acceptors via redox reactions, and couples this electron transfer with the transfer of protons across a membrane.