The image below illustrates 3 sugar cubes consider eight 1-cm^3 sugar cubes stacked two by two to form a single bigger cube a)what is the volume of the combined cube? B) what is the surface area of the combined cube c) what is total surface area of the 8 separate sugar cubes . D) how does the surface area of the combined cube compare to the surface areas of the separate cubes.

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Q: Question 1 A roller coaster car of total mass m 645 kg starts at a level portion of the track, a…

A: Solution: given that h1 = 24 m h2 = 16 m m  = 645 kg v1 = 2.2 m/s

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A: Hope this helps. As per policy I am giving solutions for two parts. Thank you

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Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.