1) Propose un protocole permettant de mesurer la masse de 10 mL de chaque liquide, (matériel : deux éprouvettes graduées de 10 mL, deux béchers, une
balance, deux pipettes pasteur, deux flacons sans étiquettes)

If a negatively charged particle is placed at rest in an electric potential field that increases in the positive x-direction, what will the particle do? a. accelerate in the positive x-direction b. remain at rest c. accelerate in the negative x-direction