How many electrons can occupy the first shell? How many can occupy the second shell?
Expert Solution & Answer
To determine
To find:
The number of electrons that can occupy the first shell and the second shell.
Answer to Problem 1RCC
Solution:
Only two electrons can occupy the first shell while eight electrons can occupy the second shell.
Explanation of Solution
Every atom tends to form bonds. The bond formation depends upon the outer shell’s electron. There is a model to arrange a number of electrons in each shell. The noble gas shell model describes that the number of electrons in the first shell can be two and the number of electrons in the second shell can be eight.
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Part C
Find the height yi
from which the rock was launched.
Express your answer in meters to three significant figures.
Learning Goal:
To practice Problem-Solving Strategy 4.1 for projectile motion problems.
A rock thrown with speed 12.0 m/s and launch angle 30.0 ∘ (above the horizontal) travels a horizontal distance of d = 19.0 m before hitting the ground. From what height was the rock thrown? Use the value g = 9.800 m/s2 for the free-fall acceleration.
PROBLEM-SOLVING STRATEGY 4.1 Projectile motion problems
MODEL: Is it reasonable to ignore air resistance? If so, use the projectile motion model.
VISUALIZE: Establish a coordinate system with the x-axis horizontal and the y-axis vertical. Define symbols and identify what the problem is trying to find. For a launch at angle θ, the initial velocity components are vix=v0cosθ and viy=v0sinθ.
SOLVE: The acceleration is known: ax=0 and ay=−g. Thus, the problem becomes one of…
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The Laws of Thermodynamics, Entropy, and Gibbs Free Energy; Author: Professor Dave Explains;https://www.youtube.com/watch?v=8N1BxHgsoOw;License: Standard YouTube License, CC-BY