A sloped line means the object is returning to the starting point. A Upward B Backwar C Missing D Downward

There are weak or strong attractive forces between atoms of liquids with a high viscosity

Find the magnetic field a distance r from the center of a long wire that has radius a and carries a uniform current per unit area j in the positive z direction.

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?