Can the dielectric permittivity of an insulator be negative?

What is the period of a sound wave having frequency of 340 hertz

Explain what it means when we say a substance is magnetic. That is type of substance which produce magnetic field

Peyton and Vanessa are having an in-depth conversation about whether moral standards and concepts hold across cultures, or whether they are relative. What type of ethics are they considering?

During soccer practice, Maya kicked a soccer ball 37° off the ground at 25 m/s. What was the ball's speed 2.2 s after she kicked it?

A brick is released with no initial speed from the roof of a building and strikes the ground in 2.50 s, encountering no appreciable air drag.

What are the steps that produce electricity from this fuel

Adrian read about a new antimicrobial in a popular magazine. The advertisement claimed that the product Bactokil prevents bacterial growth. So, Adrian conducted a controlled experiment to test the product claims.

A world-class sprinter can burst out of the blocks to essentially top speed (of about 11.5 m/s) in the first 15.0 m of the race. what is the average acceleration of this sprinter, and how long does it take her to reach that speed?

How are primary and secondary succession similar and how are they different?

What relates the net force exerted on an object to its mass and acceleration?