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- Thank you for the explanation, but this didn't answer my question. I need to know the angles for qeustion 2, 3, and 4. With explanations on how to get them.A railroad curve is laid out on a circle. What radius should be used if the track is to change direction by 20° in a distance of 100 miles? Round your answer to the nearest mile.In a rotating 2 km diameter spacestation the outer edge experience 1g while halfway to the middle Select one: a. people experience 0.25g b. people experience 2g c. people experience 1g d. people experience 0.5g