What are most semiconductors made from? aluminum copper iron silicon

How much heat is needed to change the temperature of 3 grams of gold (c=0.129(1)/(g^circ )C) from 21^circ C to 363^circ C ? The answer is expressed to the nearest whole number. 121 joules 132 joules 140 joules 149 joules

Fire the catapult at the lowest cup position What is the distance achieved? About 635 About 357

If Jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, what is being done? compression work radiation energy creation

Which word or phrase best describes entropy? disorder order kinetic energy force

At which temperature does all molecular motion stop? OR 0^circ C OK 0^circ F