Neglecting air resistance and using free-fall acceleration (-9.8 m/s^2), calculate the velocity of the ball when it hits the ground

An object is 10. cm from the mirror, its height is 3.0 cm, and the focal length is 2.0 cm. what is the image height? (indicate the object orientation by including the + or - sign with the answer.) hi = cm +1.33 -1.33 +0.75 -0.75

How many hydrogen (h) atoms are in one molecule of sulfuric acid, h2so4? (1 points) 1 2 4 7

The heliocentric and the geocentric models of the solar system included these central principles