The ptolemaic theory of the universe was disproved by
a. descartes.
b. kepler.
c....
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Aprojectile is launched horizontally 10m above the ground and with an initial velocity of 15 m/s. a) determine the magnitude and direction of projectile velocity at t= 1.3s b) determine the magnitude and direction of projectile acceleration at t=1.3s
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Discuss how the hardness or softness of the landing surface is related to the time required to stop the egg
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Which of the following is the main energy source for the sun? a. fission of hydrogen b. fusion of hydrogen c. fusion of helium d. fission of iron
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