Solar prominences are arches of glowing gas that extend outward from the suns1. corona2. atmosphere3. chromosphere4. photosphere

At a certain instant after jumping from the airplane a, a skydiver b is in the position shown and has reached a terminal (constant) speed vb = 52 m/s. the airplane has the same constant speed va = 52 m/s, and after a period of level flight is just beginning to follow the circular path shown of radius ρa = 2330 m. (a) determine the velocity and acceleration of the airplane relative to the skydiver. (b) determine the time rate of change of the speed vr of the airplane and the radius of curvature ρr of its path, both as observed by the nonrotating skydiver.

Ascientific blank must be testable and capable of being proven false?

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2