Question

a van de graaff generator builds up electric charge on a metal dome. if metal pie pans are stacked on top and the generator is turned on, the pans fly off as shown below. complete the explanation of this phenomenon. - the pie pans are dropdown each other. - so, when the generator is turned on, dropdown charges must build up on the pans. (options for dropdowns: like, opposite)

Explanation:

1. For the first blank: Metal pie pans are conductors. When a Van de Graaff generator (which builds up charge) is connected, the pans will acquire the same type of charge (since charge distributes on conductors, and they are in contact with the charged dome, so they get like charges). Like charges repel each other, which is why the pans fly off. So the first blank should be "repelled by" (but the options given in the dropdown for the first part? Wait, the user's dropdown for the first blank - wait, the user's image shows for the first blank a dropdown, and for the second, the options are "like" or "opposite". Wait, let's re - examine. The phenomenon is that the pans fly off, which is due to repulsion. Repulsion occurs between like charges. So:

• The pie pans are repelled by each other (because like charges repel). But the dropdown for the first part - maybe the first blank's options (not shown fully, but the second blank: when the generator is turned on, like charges must build up on the pans (because like charges repel, causing the pans to fly off).

1. For the second blank: A Van de Graaff generator transfers charge to the metal dome, and then to the metal pie pans. Since the pans are conductors, the charge on them will be the same (like) because charge can move freely on conductors. Like charges repel, so the pans fly off. So the second blank is "like".

Answer:

• The pie pans are \(\boldsymbol{\text{repelled by}}\) each other. (Note: If the first blank's dropdown had "repelled by" as an option; for the second blank)
• So, when the generator is turned on, \(\boldsymbol{\text{like}}\) charges must build up on the pans.