A $13\mathrm{.}0$ FF capacitor is connected to a power supply that keeps a constant potential difference of $24\mathrm{.}0$ VV across the plates. A piece of material having a dielectric constant of $3\mathrm{.}75$ is placed between the plates, completely filling the space between them.

Part A

How much energy is stored in the capacitor before the dielectric is inserted?

Express your answer in joules.

Activate to select the appropriates template from the following choices. Operate up and down arrow for selection and press enter to choose the input value typeActivate to select the appropriates symbol from the following choices. Operate up and down arrow for selection and press enter to choose the input value type

U$1$U$1=$

nothing

JJ

SubmitRequest$$Answer

Part B

How much energy is stored in the capacitor after the dielectric is inserted?

Express your answer in joules.

Activate to select the appropriates template from the following choices. Operate up and down arrow for selection and press enter to choose the input value typeActivate to select the appropriates symbol from the following choices. Operate up and down arrow for selection and press enter to choose the input value type

U$2$U$2=$

nothing

JJ

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Part C

By how much did the energy change during the insertion?

Express your answer in joules.

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$$U$$U $=$

nothing

JJ

SubmitRequest$$Answer

Part D

Did it increase or decrease?

increasedecrease