Acceleration is always in the direction of the net _____. If normal atoms are ne

Question

Acceleration is always in the direction of the net _____. If normal atoms are neutrally charged, electrons are negatively charged, and protons are positively charged, how many electrons would oxygen have it has 8 protons? four eight sixteen twenty-four What is the building blocks of matter? atoms gases liquids solids A candle is 49.0 cm in front of a convex spherical mirror of radius of curvature 70.0 cm. What are the image distance and the magnification, respectively? -20.4 cm, +0.417 +20.4 cm, -0.417 +122.5 cm, +2.50

Explanation / Answer

Q24) since atom is neutral so oxygen must have 8 electrons for neutralizing charge on 8 protons

Q25)atoms are building blocks of matter.

Q26) R= 70 cm

focal length, f=-R/2=-35 cm

object distance, u=-49 cm

we know,

1/u + 1/v =1/f

giving

1/v = 1/u -1/f

= v = fu/(f-u)

=(35*49)/(-35+49)

= 122.5 cm

m= -v/u=2.5

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