Examlex
Particle in a box: An electron is confined in a one-dimensional box (an infinite well) . Two adjacent allowed energies of the electron are 1.068 × 10-18 J and 1.352 × 10-18 J. What is the length of the box? (h = 6.626 × 10-34 J ∙ s, mel = 9.11 × 10-31 kg)
Metal Tools
Hand tools or implements made primarily of metal, used for various purposes including construction, repair, and shaping materials.
Pre-Columbian
Referring to the period and cultures in the Americas before the arrival of Christopher Columbus in 1492.
Europeans
People originating from or associated with Europe, a continent located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere.
Creation Myths
Traditional or symbolic stories that describe the beginnings of the universe, the earth, and life on it, serving to explain existence and the world's nature.
Q9: Free-electron theory of metals: A metal has
Q11: Radioactive dating: An archaeologist finds the <sup>14</sup>C
Q27: Projectiles: A monkey is sitting at the
Q34: Air resistance: An 80.0-kg object is falling
Q45: Cosmology: If the density of the universe
Q58: Newton's second law: A 10,000-kg rocket blasts
Q64: Uncertainty principle using ΔpΔx ≥ ħ/2: A
Q72: General questions: You are standing in a
Q85: Properties of the nucleus: Which of the
Q92: Spherical mirrors: An object 4.0 cm in