If Helium Nuclei and Protons Are Each Accelerated from Rest

question 24

Multiple Choice

If helium nuclei and protons are each accelerated from rest through the same potential difference V,which gets the greatest kinetic energy and by what factor is it greater?

• A) the protons get twice as much kinetic energy
• B) the helium nuclei get twice as much kinetic energy
• C) they both get the same kinetic energy
• D) the protons get four times as much kinetic energy
• E) the helium nuclei get four times as much kinetic energy

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Definitions:

Seafloor Spreading

The process by which new oceanic crust is created at mid-ocean ridges as tectonic plates diverge, allowing magma from the mantle to cool and solidify.

Lesser Antilles

A chain of smaller islands stretching from the Virgin Islands to Trinidad and Tobago, separating the Caribbean Sea from the Atlantic Ocean.

Subduction Zone

A region where one tectonic plate plunges beneath another into the earth's mantle, often generating earthquakes and volcanic activity.

Central Atlantic Ocean

The portion of the Atlantic Ocean located between North and South America to the west and Europe and Africa to the east.