How might the middle layer contribute to your understanding of the history of the rock layers? How certain can you be?

1.what is where an object is located 2. what is how fast an objects speed is changing 3. what is how fast an object is moving

The ability to make things happen is also called a. heat b. force c. matter d. energy

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.