Which of these would be a good insulator of electricity? Group of answer choices

Steel

Rubber

Copper

Aluminum

Compare and contrast physical changes with chemical changes.

Read "who built the pyramids? ”. leave this link open while you answer the questions throughout the assignment. give at least two reasons why some people claim the pyramids of giza were constructed by aliens.

Ariver current has a velocity of 5km/h relative to the shore, and a boat moves in the same direction as the current at 5 km/h relative to the river. how can the velocity of the boat relative to the shore be calculated?