You are given 10g samples of each of the materials listed. each material is heated for the same period of time. rank the materials in terms of temperature change observed from least change to most change.

specific heat
material specific heat (j/kg k)
aluminum 900
copper 390
brass 380
silver 230
platinum 130
water 4186

Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?

Assume that two of the electrons at the negative terminal have attached themselves to a nearby neutral atom. there is now a negative ion with a charge -2e at this terminal. what are the electric potential and electric potential energy of the negative ion relative to the electron? the electric potential and the electric potential energy are both twice as much. the electric potential is twice as much and the electric potential energy is the same. the electric potential is the same and the electric potential energy is twice as much. the electric potential and the electric potential energy are both the same. the electric potential is the same and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron. the electric potential is twice as much and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron.

Complete the sentence to describe the law of conservation of energy. the law of conservation of energy states that energy cannot be created