Suppose object A and object B are separated by distance, d, with gravitational force. F, between them. If object B is replaced by object C, which has three times the mass how
does the new gravitational force between objects A and C compare to the gravitational force between objects A and B?

A.)the new gravitational force is doubled that of the original

B.)the new gravitational force is one ninth that of the original

C.)the new gravitational force is tripled that of the original

D.)the new gravitational force is half that of the original

some think that theories become laws, but theories and laws have separate and distinct roles in the scientific method. a law is a description of an observed phenomenon in the natural world that hold true every time it is tested. it doesn't explain why something is true; it just states that it is true.

current and voltage can both be different in different parts of a circuit so it matters where you place the ammeter and voltmete

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)