The answer is B.
She can measure the mass of the water, marble and the graduated cylinder with the balance.
The volume of the water can be shown on the marked graduated cylinder, the volume of the marble can be measured by the volume difference of the water before and after the marble is put in.

if currents go in opposite directions, wires repel
Answer:
i beleave cuz of the Earth is spherical
Explanation:
Its b.functional paragraph because writers use this for interest presents and special effects
Explanation:
It varies with altitude, but at sea level, it's 9.8 m/s².