If Neutrinos Have Mass but Do Not Interact Much with Normal

question 38

Multiple Choice

If neutrinos have mass but do not interact much with normal matter, why can't they be the dominant form of dark matter in the universe?

• A) Structure formation would have started with large objects fragmenting into smaller objects.
• B) Structure formation would have started with small objects merging to form larger objects.
• C) Neutrinos would decay over time and disappear, causing galaxies to fall apart.
• D) Neutrinos would not gravitationally lens background galaxies.
• E) Neutrinos are charged particles.

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Definitions:

Closed Economy

An economic system that does not interact with other economies in terms of international trade or financial transactions.

Public Saving

The difference between tax revenues and government expenditures, typically representing the amount of surplus funds the government has.

Closed Economy

An economic system that does not engage in international trade, instead relying on its own internal markets for goods and services.

Accounting Identity

An equation that must always be true due to the way variables are defined, commonly used in economics and accounting to reflect the balance between different components.