7. Area under av-tgraph represents a physical quantity which has the unit (a) m
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(d) ms-1
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Which of the filling is an effect of the uneven heating of the earth by the sun ? a sea breeze a land breeze a convection current all of the above

One of the brightest comets of the 20th century was comet hyakutake, which passed close to the sun in early 1996. the orbital period of this comet is estimated to be about 30,000 years. find the semi-major axis of this comet’s orbit. compare it to the average sun-pluto distance and to the distance to alpha centauri, the nearest star to the sun, which is 4.3 light-years distant.

Which are evidence of the seafloor spreading? a. molten material b. magnetic stripes c. continental material d. drilled core samples e. ocean water samples