Consider hitting a golf ball with a golf club. if we call the force applied to the ball by the club the action force, identify the reaction force.
a. the centrifugal force in the swing
b. the force applied to the club by the hands
c. the force applied to the club by the ball
d. the force the ball carries with it in flight

Which of these properties, used alone, would be least useful in identifying most minerals? a. color b. luster c. streak d. density

The covalent compound acetylene, which is the fuel of the oxyacetylene torch used by welders, has the molecular formula c2h2. the covalent compound benzene, a commercial solvent, has the molecular formula c6h6 each of these covalent compounds contains carbon and hydrogen atoms in a one-to-one ratio. would it be correct to write the chemical formulas of each as ch? explain.

Inside a flashbulb, oxygen surrounds a thin coil of magnesium. when the flashbulb is set off, a chemical reaction takes place in which magnesium combines with oxygen to form magnesium oxide. which of the chemical equations matches the reaction above? a. mg + o2 mgo2 + energy b. 2mg + o mg2o + energy c. 2mg + o2 2mgo + energy d. mg + o mgo + energy