If + = 0, then the vectors and have equal magnitudes and are directed in the same direction
Indicate whether the statement is true or false
FALSE
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Satellite Motion: A satellite of mass 500 kg orbits the earth with a period of 6000 s. The earth has a mass of 5.97 × 1024 kg, a radius of 6.38 × 106 m, and G = 6.67 × 10-11 N ? m2/kg2.(a) Calculate the magnitude of the earth's gravitational force on the satellite.(b) Determine the altitude of the satellite above the earth's surface.
What will be an ideal response?
What happens to the surface temperature and luminosity when gravity first assembles a protostar from a collapsing cloud?
A) Its surface temperature and luminosity increase. B) Its surface temperature remains the same and its luminosity decreases. C) Its surface temperature and luminosity decrease. D) Its surface temperature decreases and its luminosity increases. E) Its surface temperature and luminosity remain the same.
Each of two vectors, 
and 
, lies along a coordinate axis in the xy plane. Each vector has its tail at the origin, and the dot product of the two vectors is 
data-wiris-created="true" class="Wirisformula" />. Which possibility is correct? A.
and both lie along the positive x axis.B.
lies along the positive x axis. lies along the negative x axis.C.
and both lie along the positive y axis.D.
lies along the negative x axis. lies along the negative y axis.E.
lies along the positive y axis. lies along the negative x axis.Photosynthetic life existing on a planet farther from the Sun than the Earth would most likely be
A) smaller, less efficient at collecting solar radiation or have a faster metabolism than photosynthetic life on Earth B) identical to photosynthetic life on Earth C) larger, more efficient at collecting solar radiation or have a slower metabolism than photosynthetic life on Earth D) impossible