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... For example: When you lift a ball a distance y, gravity does negative work on the ball. This work can be recovered as kinetic energy if we let the ball fall. The energy that was “stored” in the ball is potential energy. Wc = -DU =-[Ufinal – Uinitial] Wc = work done by a conservative force DU = chang ...
... For example: When you lift a ball a distance y, gravity does negative work on the ball. This work can be recovered as kinetic energy if we let the ball fall. The energy that was “stored” in the ball is potential energy. Wc = -DU =-[Ufinal – Uinitial] Wc = work done by a conservative force DU = chang ...
Thermodynamics
... (+40.66 kJmol-1 at 373K for water) endothermic Hfuso:1mole pure solid melts to a pure liquid at 1bar (+6.01 kJmol-1 at 273K for ice) endothermic ...
... (+40.66 kJmol-1 at 373K for water) endothermic Hfuso:1mole pure solid melts to a pure liquid at 1bar (+6.01 kJmol-1 at 273K for ice) endothermic ...
E11 Lecture 8: Fuel Cell Power and Energy Conservation
... Steam enters a rotary turbine and turns a shaft connected to a generator. The inlet and outlet steam ports are approximately at the same height (ignore difference in picture below) but the inlet and exit velocities are not equal. The system is not perfectly insulated. Is the system open or closed? W ...
... Steam enters a rotary turbine and turns a shaft connected to a generator. The inlet and outlet steam ports are approximately at the same height (ignore difference in picture below) but the inlet and exit velocities are not equal. The system is not perfectly insulated. Is the system open or closed? W ...
Document
... of a system equals the negative of the derivative of the potential energy associated with that system ...
... of a system equals the negative of the derivative of the potential energy associated with that system ...
Conservation of mechanical energy
... velocity of 24 ms–1 directed 25° above the horizontal. Suppose that as a result of air resistance the skier returns to the ground with a speed of 22 ms–1 and lands at a point down the hill that is 14m below the ramp. How much energy is dissipated by air resistance during the ...
... velocity of 24 ms–1 directed 25° above the horizontal. Suppose that as a result of air resistance the skier returns to the ground with a speed of 22 ms–1 and lands at a point down the hill that is 14m below the ramp. How much energy is dissipated by air resistance during the ...
Unit B: Energy Flow in Technological Systems
... 17. A force of 50 N acts to push an object 6.0 m. How much work is being done? ...
... 17. A force of 50 N acts to push an object 6.0 m. How much work is being done? ...
Document
... • sometimes does positive work, sometimes negative work. • Normal force: magnitude =whatever is needed for the objects not to penetrate surface; always perpendicular to surface. • never does any work !! • Friction force: magnitude = µκN (if moving), ≤ µsN (if not); always opposing motion and par ...
... • sometimes does positive work, sometimes negative work. • Normal force: magnitude =whatever is needed for the objects not to penetrate surface; always perpendicular to surface. • never does any work !! • Friction force: magnitude = µκN (if moving), ≤ µsN (if not); always opposing motion and par ...
Comparing Forms of Energy Release
... system to perform work Work is the sum total of force applied over a distance of displacement Power is the rate at which energy is ...
... system to perform work Work is the sum total of force applied over a distance of displacement Power is the rate at which energy is ...
Intro and Basic Concepts
... conservation of energy principle. It simply states that during an interaction, energy can change from one form to another but the total amount of energy remains constant. Second law of thermodynamics: energy has quality as well as quantity, and actual processes occur in th ...
... conservation of energy principle. It simply states that during an interaction, energy can change from one form to another but the total amount of energy remains constant. Second law of thermodynamics: energy has quality as well as quantity, and actual processes occur in th ...
Physical Science 3 Nine Week Study Guide 1.
... 6. Forces on an object that are equal in size and opposite in direction are called ____. 7. ____ is the tendency of an object to resist any change in its motion. 8. ____ states that an object moving at constant velocity keeps moving at that velocity unless an unbalanced net force acts on it. It is a ...
... 6. Forces on an object that are equal in size and opposite in direction are called ____. 7. ____ is the tendency of an object to resist any change in its motion. 8. ____ states that an object moving at constant velocity keeps moving at that velocity unless an unbalanced net force acts on it. It is a ...
Chapter 7: Energy and Chemical Change
... • KE can be converted into PE and vice versa When the child is at points (a) and (c) they have only PE; at point (b) only KE. Total energy is conserved ...
... • KE can be converted into PE and vice versa When the child is at points (a) and (c) they have only PE; at point (b) only KE. Total energy is conserved ...
Unit 4 Work, Energy and Power
... It is often useful to 4 …………………. h as the height above some reference point (usually the lowest point considered). ...
... It is often useful to 4 …………………. h as the height above some reference point (usually the lowest point considered). ...
C - Energi Masa Depan Weblog | Just another WordPress.com weblog
... amount of mass (no mass transfer). We observe that the kinetic energy of the hand decreases during the process, as evidenced by a decrease in velocity from initial value to zero, while the internal energy of the ...
... amount of mass (no mass transfer). We observe that the kinetic energy of the hand decreases during the process, as evidenced by a decrease in velocity from initial value to zero, while the internal energy of the ...
Notes on Energy
... 1. As height above the ground increases (or other arbitrary point), the gravitational potential energy increases. 2. PE = mgh 3. As an object falls it loses gravitational potential energy. C. Elastic Potential Energy - is the energy stored in elastic materials as the result of their stretching or co ...
... 1. As height above the ground increases (or other arbitrary point), the gravitational potential energy increases. 2. PE = mgh 3. As an object falls it loses gravitational potential energy. C. Elastic Potential Energy - is the energy stored in elastic materials as the result of their stretching or co ...
Document
... dependent of the path taken (yola bağımlı) If we heat up a system the given energy is not stored in the form of heat energy. It cause increase in internal energy, e.g., increase atomic motions, therefore temperature increases . ...
... dependent of the path taken (yola bağımlı) If we heat up a system the given energy is not stored in the form of heat energy. It cause increase in internal energy, e.g., increase atomic motions, therefore temperature increases . ...
Calculating Work and Energy Word Problems
... Remember the steps we use for solving equations: 1. Underling the variables and circle the values. (If the variable is not listed, write it above the value.) 2. Box the variable you are trying to find. 3. List the variables and values in a column. 4. Find and write the equation that has the variable ...
... Remember the steps we use for solving equations: 1. Underling the variables and circle the values. (If the variable is not listed, write it above the value.) 2. Box the variable you are trying to find. 3. List the variables and values in a column. 4. Find and write the equation that has the variable ...