Which describes how fast-moving particles assist in transferring thermal energy to a cup after hot tea is poured into it? They replace slow-moving particles.
They collide with slow-moving particles.
They collide with other fast-moving particles.
They are replaced by slow-moving particles.

They collide with slow moving particles (B)

Explanation:

Thermal energy is transferred through particles. Particles cannot be replaced, so both A and D are out. In order for thermal energy to be transferred, you must have 2 different substances with different temperatures, so C is out. That leaves you with A. I also took the test on Edge.

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.)