In the above H-R diagram, which main sequence star is reddish in color?
A. A
B. B
C. C
D. D
E. E
Answer: C
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A satellite is in a circular parking orbit 6.98 × 106 m from the center of Earth. To initiate a Hohmann transfer, a rocket gives it an accelerating thrust so that its speed is increased to 8300 m/s
How far from the center of Earth will the satellite be when it reaches its apogee? The mass of Earth is 5.97 × 1024 kg and G = 6.67 x 10-11 N•m2/kg2. A) 3.12 × 107 m B) 2.48 × 107 m C) 1.06 × 107 m D) 6.73 × 107 m E) 4.75 × 107 m
A car goes around a curve at a constant speed. What is the direction of the net force on the car?
A) toward the curve's center B) away from the curve's center C) toward the front of the car D) toward the back of the car E) the net force is zero
Our Sun lies about the middle of the main sequence and the H-R diagram
Indicate whether the statement is true or false
The conterminous United States lies predominantly in which wind zone?
a. Westerlies b. Northeast tradewinds c. Polar easterlies d. Doldrums