What is the reasoning behind newton's law of universal gravity?

a.
centripetal force is the force directed toward the center of a circle as a moving object changes direction.

b.
the force any object exerts upon another is related to the distance between them.

c.
the square of the orbital period of a planet is directly proportional to the cube of the semi-major axis of its orbit.

What is the relationship between the wavelength of a wave and it's energy?

Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.

Which type of reaction is shown in this energy diagram? energy products activation energy reactants time o a. endothermic, because energy is released to the surroundings o b. exothermic, because energy is absorbed from the surroundings o c. exothermic, because energy is released to the surroundings o d. endothermic, because energy is absorbed from the surroundings