Which of the following has the smallest atomic radius group of answer choices? Helium What is the trend for atomic radius down a group? In general, atomic radius decreases across a period and increases down a group. Across a period, effective nuclear charge increases as electron shielding remains constant. Why does atomic radius increase as […]
What is the acceleration of a falling skydiver?
What is the acceleration of a falling skydiver? Near the surface of the Earth, any object falling freely will have an acceleration of about 10 m/s 2. What happens to a skydivers acceleration? The skydiver accelerates towards the ground. As the skydiver gains speed, their weight stays the same but the air resistance increases. There […]
What are the selection rules for vibrational transitions?
What are the selection rules for vibrational transitions? Thus, the selection rule for a harmonic oscillator transition is ∆v = ± 1. The physical meaning of the vibrational selection rule is this: The vibration must change the molecular dipole moment to have a non-zero (electric) transition dipole moment. Which transition between rotational energy levels is […]
What is the oldest carbon dated object?
What is the oldest carbon dated object? Well, scientists just took one of geology’s biggest controversies and shrunk it down to atomic size. By zapping single atoms of lead in a tiny zircon crystal from Australia, researchers have confirmed the crystal is the oldest rock fragment ever found on Earth — 4.375 billion years old, […]
What are the 6 ocean zones?
What are the 6 ocean zones? The sunlight zone, the twilight zone, the midnight zone, the abyss and the trenches. Sunlight Zone. This zone extends from the surface down to about 700 feet. Twilight Zone. This zone extends from 700 feet down to about 3,280 feet. The Midnight Zone. The Abyssal Zone. The Trenches. What […]
Can coefficient of drag be negative?
Can coefficient of drag be negative? Drag coefficient cannot be negative in steady flow and a negative value of drag coefficient in steady flow indicates a computational error. It can however be zero in unsteady flow instantaneously. Negative drag is thrust. Why is drag negative? When drag is termed “positive”, that means that it is […]
What is Stonehenge aligned with?
What is ab initio method in physics?
What is ab initio method in physics? In nuclear physics, ab initio methods seek to describe the atomic nucleus from the bottom up by solving the non-relativistic Schrödinger equation for all constituent nucleons and the forces between them. A significant challenge in the ab initio treatment stems from the complexities of the inter-nucleon interaction. What […]
How does speed affect projectile motion?
How does speed affect projectile motion? Because air resistance affects the horizontal component of a projectiles trajectory, the effect of it can be minimized by lowering the angle of release. Speed or velocity is directly related to distance. The greater the speed of release, the greater the distance covered in flight. Initial Horizontal Velocity. How […]
What are 4 examples of mechanical weathering?
What are 4 examples of mechanical weathering? Examples of mechanical weathering include frost and salt wedging, unloading and exfoliation, water and wind abrasion, impacts and collisions, and biological actions. All of these processes break rocks into smaller pieces without changing the physical composition of the rock. What are the 7 types of mechanical weathering? Types […]