Carson takes his bike down a large hill. As he is going down the hill, he squeezes on the breaks to slow his speed. When he stops at the bottom of the hill, his leg brushes against the break and it burns his leg. Construct a CER to answer the question: What caused the break to become hot?

If you place a magnet under a clear dish, and sprinkle iron fillings over it, above what part of the magnet will most of the fillings gather

The particles that are found in the nucleus of an atom are

Four point charges each having charge q are located at the corners of a square having sides of length a. find symbolic expressions for the following. (a) the total electric potential at the center of the square due to the four charges (use any variable or symbol stated above along with the following as necessary: ke.) vtotal= (b) the work required to bring a fifth charge p from infinity to the center of the square (use any variable or symbol stated above along with the following as necessary: w=