What do we mean when we talk about the Milky Way in our sky?
A) The patchy band of light that outlines the plane of the Milky Way Galaxy as seen from Earth.
B) The whitish patch of light we see when we look toward the center of the Milky Way Galaxy.
C) The spiral-shaped galaxy in which we live.
D) The bright stars of the constellations that lie along the ecliptic in our sky.
A) The patchy band of light that outlines the plane of the Milky Way Galaxy as seen from Earth.
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A world-class sprinter can reach a top speed (of about 11.5 m s) in the first 15.0 m of a race. What is the average acceleration of this sprinter and how long does it take her to reach that speed?
What will be an ideal response?
A student in the front of a school bus tosses a ball to another student in the back of the bus while the bus is moving forward at constant velocity. The speed of the ball as seen by a stationary observer in the street
A. is less than that observed inside the bus. B. is the same as that observed inside the bus. C. is greater than that observed inside the bus. D. may be either greater or smaller than that observed inside the bus. E. may be either greater, smaller, or equal to that observed inside the bus.
The Miller-Urey experiment sought to recreate conditions in Earth's early atmosphere
Indicate whether the statement is true or false
The average velocity of gas molecules in a tank in thermal equilibrium is
1.greater than zero. 2.less than zero. 3.equal to zero. 4.impossible to determine.