Two masses exerting a force on each other is an example a.) kepler's law b.)heliocentric theory c.)universal law of gravitation d.)geocentric theory

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here

What is the molar mass of the anhydrous compound? answer using four significant figures. 36.02 g/mol 120.15 g/mol 156.12 g/mol

Is the idea of spontaneous generation supported by redi's experiment? justify your answer in 2-3 sentences?