Which statements describe how chemical formulas, such as h2o, represent compounds? check all that apply. they show the types of molecules that make up an atom. they show the elements that make up a compound. they show the three-dimensional shape of a molecule. they show the types of atoms that make up a molecule. they show the number of each type of atom in a molecule.

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?

When measuring volume, why is it important to use the correct tools and units to attain the greatest accuracy? use specific examples from the lab to support your answer. (5 points)

Abasketball star covers 2.65 m horizontally in a jump to dunk the ball. his motion through space can be modeled precisely as that of a particle at his center of mass. his center of mass is at elevation 1.02 m when he leaves the floor. it reaches a maximum height of 1.90 m above the floor and is at elevation 0.910 m when he touches down again. (a) determine his time of flight (his "hang time"). (b) determine his horizontal velocity at the instant of takeoff. (c) determine his vertical velocity at the instant of takeoff. (d) determine his takeoff angle. (e) for comparison, determine the hang time of a whitetail deer making a jump with center-of-mass elevations yi = 1.20 m, ymax = 2.45 m, and yf = 0.750 m.