Use the figure below to answer questions from 22 to 23: A battery V-12 V is connected to four equal resistors, R1, R2, R3, and R4, shown in the figure below. These resistors are equal to 4 ohms each. Answer the questions from 22 to 23. V=12V R1 R2 R3: RA R3=R,=R3=R4=42 22. What is the total resistance of the circuit? A) 4 N B) 8n C) 12 N D) 16 N 23. What is the total electric current in the circuit? A) ЗА B) 4A C) 6A D) 8A

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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.