What is the charge on the positive plate? A parallel-plate capacitor is constructed of two horizontal 12.0-cm-diameter circular plates. A 1.6 g plastic bead with a charge of -5.6 nC is suspended between the two plates by the force of the electric field between them.

Three different objects, all with different masses, are initially at rest at the bottom of a set of steps. each step is of uniform height . the mass of each object is a multiple of the base mass : object 1 has mass 4..00m , object 2 has mass 1..96m , and object 3 has mass . when the objects are at the bottom of the steps, define the total gravitational potential energy of the three-object system to be zero. if the objects are then relocated as shown, what is the new total potential energy of the system? each answer requires the numerical coefficient to an algebraic expression. each algebraic expression is given using some combination of the variables , , and , where is the acceleration due to gravity. enter only the numerical coefficient. (example: if the answer is 1..23mgd , just enter 1.23)

When the magnetic domains in a material can be aligned, but eventually drift out of alignment, the material is

Which of these metals are magnetic?