How much heat is required to raise the temperature of a 50. 6 g copper metal cube from 25. 0 oc to 78. 0oc? (specific heat of cu = 0. 385 j/g oc).

Three point charges, two positive and one negative, each having a magnitude of 20 μc are placed at the vertices of an equilateral triangle (30 cm on a side). what is the magnitude of the electrostatic force on the negative charge

Which is special about a dc circuit ? a. it has both series and parallel components b. it has only series or only parallel components c. charge moves in a single direction d. charge moves back and forth quickly

The amount of potential energy possessed by an elevated object is equal to