SAT Physics Conventions and Graphing - Answers Explained

SAT Physics Conventions and Graphing - Answers Explained

SAT Physics Conventions and Graphing - Answers Explained-57-1
SAT Physics Conventions and Graphing - Answers Explained-58-1
Location: Texas, USA

Comments

Post a Comment

Popular posts from this blog

SAT Chemistry The Laboratory - Laboratory Safety Rules

Image
SAT Chemistry The Laboratory -   Laboratory Safety Rules The Ten Commandments of Lab Safety The following is a summary of rules you should be well aware of in your own chemistry lab. Dress appropriately for the lab. Wear safety goggles and a lab apron or coat. Tie back long hair. Do not wear open-toed shoes. Know what safety equipment is available and howto use it. This includes the eyewash fountain, fire blanket, fire extinguisher, and emergency shower. Know the dangers of the chemicals in use, and read labels carefully. Do not taste or sniff chemicals. Dispose of chemicals according to instructions. Use designated disposal sites, and follow the rules. Never return unneeded chemicals to the original containers. Always add acids and bases to water slowly to avoid splattering. This is especially important when using strong acids and bases that can generate significant heat, form steam, and splash out of the container. Never point heating test tubes at yourself or others. Be
Read more

SAT Chemistry Atomic Structure and the Periodic Table of the Elements - Atomic Spectra

Image
SAT Chemistry Atomic Structure and the Periodic Table of the Elements - Atomic Spectra The Bohr model was based on a simple postulate. Bohr applied to the hydrogen atom the concept that the electron can exist only in certain energy levels without an energy change but that, when the electron changes its state, it must absorb or emit the exact amount of energy that will bring it from the initial state to the final state. The ground state is the lowest energy state available to the electron. The excited state is any level higher than the ground state. The formula for a change in energy (ΔE) is: When an electron moves from the ground state to an excited state, it must absorb energy. When it moves from an excited state to the ground state, it emits energy. This release of energy is the basis for atomic spectra. (See Figure 6.) The energy values shown were calculated from Bohr’s equation. When energy is released in the “allowed” values, it is released in the form of discrete radi
Read more

SAT Physics Historical Figures and Contemporary Physics - Historical Figures

Image
SAT Physics Historical Figures and Contemporary Physics - Historical Figures HISTORICAL FIGURES Newtonian Mechanics GALILEO GALILEI (1564-1642) Bodies dropped from the same height will all fall with the same acceleration, g. The distance they travel is proportional to the square of time, y = Principle of inertia: The natural state of motion is uniform constant velocity. ISAAC NEWTON (1642-1727) 1st law of motion (law of inertia): Modifies Galileo’s principle of inertia. The natural state of motion is constant velocity unless acted upon by an unbalanced force. 2nd law of motion (ΣF = ma): The acceleration of an object is directly proportional to the net force acting on the object. Acceleration is inversely proportional to the mass of the object. 3rd law of motion: When two objects interact (action-reaction pair), an equal and oppo­site force acts on each object. This causes an opposite reaction. However, the actual motion depends on the masses involved. Law of gravity
Read more