12. A 261-g rock attached to a string travels 82.0 centimeters every 0.251 seconds on a horizontal...
Question:
12. A 261-g rock attached to a string travels 82.0 centimeters every 0.251 seconds on a horizontal circular path. The magnitude of the tension force in the string is 21.4 N. What is the diameter of this circular path in cm?
15.An Trans-Neptunian Object in the outer Solar System has an orbital speed of 3.89 km/s. What is its orbital period in years? Use 1.99 x 1030 kg for the Sun's mass and assume the orbit is circular.
Note: these objects are way beyond the orbit of Neptune, which has an orbital period of 165 years. Thus, the answer here must be much longer than Neptune's orbital period.
16.The farthest a Trans-Neptunian Object can get from the Sun in its orbit is 441 AU. The orbit's semimajor axis is 276 AU. What is the eccentricity of this orbit?