What relationship did Newton find between orbital and escape velocities? Relate this to the staging of the Apollo missions, first to a parking orbit about the Earth, and then on to the Moon
What will be an ideal response?
The escape velocity is greater than the orbital velocity by the square root of two. Thus the Apollo missions were first placed into Earth orbit, and from there an upper stage ignited to give them extra speed to break our gravitational hold.
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What is the best description of Hanny's Voorwerp?
a. spiral galaxies with unusually luminous nuclei b. elliptical galaxies with very broad emission lines c. a type of double-exhaust model d. extremely luminous objects with high redshifts e. glowing green gases due to excitation from energy from an active core
All 4 jovian planets have a layer of molecular hydrogen above a layer of metallic hydrogen
Indicate whether the statement is true or false
The surface tension of water is 0.0730 N/m. What is the height of the water in a capillary tube of diameter 2.00 mm?
A. 1.27 cm B. 1.37 cm C. 1.49 cm D. 1.58 cm E. 1.63 cm
Which of the following statements about Venus is correct?
A. Venus has a constant velocity. B. There is no net force acting on Venus. C. The Sun exerts a stronger force on Venus than Venus exerts on the Sun. D. Venus is continually accelerating toward the Sun.