A dry cell’s voltage is labeled to be 1.5V. Which of the following statements is correct?

A. The terminal voltage of the cell is greater than 1.5V
B. The emf of the dry cell is less than 1.5V
C. The terminal voltage of the cell is equal to 1.5V for closed circuit.
D. The emf of the cell is equal to 1.5
Please need help ASAP

What can you increase the strength of an electromagnet by

Aflask with vinegar in it has a mass of 160 grams. a balloon with baking soda in it has a mass of 40 grams. the balloon is attached to the flask to seal the opening and the vinegar and baking soda mixes. the balloon inflates to a large volume. what will the total mass of the balloon and flask be after the balloon inflates? explain. a) less than 200 grams because the solid baking soda disappears. b) 200 grams, because all the atoms remain in the balloon or flask. c) more than 200 grams because the size of the balloon is so much larger. d) less than 200 grams because gases such as the one in the balloon are lighter than solids and liquids.

You are standing on a boat. which of the following strategies will make the boat start moving? a. pushing the mast b. throwing some cargo out of the boat c. pushing the front ofthe boat d. pushing another passenger