From hottest to coolest, the seven letters for the star types are ________

Fill in the blank(s) with correct word


OBAFGKM

Physics & Space Science

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Momentum: A satellite with a mass of 200 kg and a speed of 0.800c and a second satellite with a mass of 100 kg and a speed of 0.600c are traveling toward each other in deep space. The satellites collide and somehow manage to stick together. What is the mass of the combined object after the collision?

A. 300 kg B. 389 kg C. 416 kg D. 457 kg E. 587 kg

Physics & Space Science

A walker walks 30 m from the origin toward the EAST to point A. She then walks from point A 20 m more toward the WEST to point B. The walker's total displacement form the origin is

A. 50 m toward the EAST. B. 30 m toward the WEST. C. 20 m toward the WEST. D. 10 m toward the EAST. E. 10 m toward the WEST.

Physics & Space Science

When you walk at an average speed of 4 m/s, in 5 s you'll cover a distance of

A) 2 m. B) 10 m. C) 15 m. D) 20 m.

Physics & Space Science

As a result of any natural process, the total entropy of any system plus that of its environment

A) never decreases. B) sometimes decreases. C) never increases. D) always stays the same.

Physics & Space Science