COSMIC PERSPECTIVE LL FD
COSMIC PERSPECTIVE LL FD
9th Edition
ISBN: 9780135877074
Author: Bennett
Publisher: PEARSON
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Chapter 19, Problem 31EAP

Choose the best answer to each of the following. Explain your reasoning with one or more complete sentences.

31. How do we determine the Milky Ways mass outside the Sun’s orbit? (a) from the Suns orbitai velocity and its distance from the center of our galaxy (b) from the orbits of halo stars near the Sun (c) from the orbits of stars and gas clouds orbiting the galactic center at greater distances than the Sun

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A car in a roller coaster moves along a track that consists of a sequence of ups and downs. Let the x axis be parallel to the ground and the positive y axis point upward. In the time interval from t 0 tot = = 4s, the trajectory of the car along a certain section of the track is given by 7 = A(1 m/s)ti + A [(1 m/s³) t³ - 6(1 m/s²)t²]ĵ where A is a positive dimensionless constant. At t car ascending or descending? = 2.0 S is the roller coaster Ascending. Descending.
need help on first part its not 220
No chatgpt pls will upvote
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