In this task, you are given a question and an answer, you would be asked to create the sentence based on the Question-Answer provided. It should be contained within the Question-Answer provided.

Q: Question: What form of energy is being used when a person pushes a wooden block across the floor? Answer: mechanical

A: Mechanical form of energy is being used when a person pushes a wooden block across the floor.
****
Q: Question: What planet did the voyager 1 spacecraft visit in 1980? Answer: saturn

A: The voyager 1 spacecraft visited saturn in 1980.
****
Q: Question: In physics, resistance is opposition to the flow of what? Answer: electrical charges

A:
In physics, resistance is opposition to the flow of electrical charges.
****