What Is the Reason a Type I Supernova Slows Its

question 78

Multiple Choice

What is the reason a Type I supernova slows its dimming after about 2 months?

• A)The planetary nebula cooled enough to form a dust shell.
• B)Energy is released from the decay of radioactive cobalt 56 to iron 56.
• C)The supernova remnant suddenly becomes transparent.
• D)The burst of energy carried by neutrinos is finally observed.
• E)Energy from the supernova's shock wave is released as it hits interstellar matter.

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Drought

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Stored or available water in natural or artificial reservoirs that can be used for various purposes.

Reciprocity Norm

The reciprocity norm is a social norm that expects individuals to respond to each other in kind, returning benefits for benefits received.