The stars found in nebulae like the Orion Nebula probably formed:

A) a few million years ago.
B) about 10 million years ago.
C) hundreds of millions of years ago.
D) billions of years ago.
E) at the beginning of the universe.


A

Physics & Space Science

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If you wanted to know how much the temperature of a particular piece of material would rise when a known amount of heat was added to it, which of the following would be most helpful to know?

A) Initial temperature B) Specific heat C) Density D) Coefficient of linear expansion E) Thermal conductivity

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How can Kirchhoff's Laws be used to deduce something about the nature of the light source?

What will be an ideal response?

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The normal force is always equal to the force of gravity

Indicate whether the statement is true or false

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