What happens when buoyant mantle material gets near earth's surface?

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?

Find an expression for the electric field e⃗ at the center of the semicircle. hint: a small piece of arc length δs spans a small angle δθ=δs /r, where r is the radius. express your answer in terms of the variables q, l, unit vectors i^, j^, and appropriate constants.

Explain how a step-down transformer makes electricity safe for use in homes