Work, Energy & Power
... “The work done by a force acting on an object is equal to the magnitude of the force multiplied by the distance through which the force acts”. ...
... “The work done by a force acting on an object is equal to the magnitude of the force multiplied by the distance through which the force acts”. ...
Key concepts from last class • The internal energy, U, is the total
... • The internal energy, U, is the total energy of the system: It is the sum of the kinetic and potential energies contributed by all the atoms, ions and molecules present in the system. It depends on temperature and in general on pressure. • When interactions between molecules can be neglected (ideal ...
... • The internal energy, U, is the total energy of the system: It is the sum of the kinetic and potential energies contributed by all the atoms, ions and molecules present in the system. It depends on temperature and in general on pressure. • When interactions between molecules can be neglected (ideal ...
Chapter 10: Work and Energy
... Work is usually done when a force is applied to a simple machine. All machines can be described in terms of input work and output work. In any machine, some of the input work goes to overcoming friction. The output work is always less than the input work because of the energy lost to frictio ...
... Work is usually done when a force is applied to a simple machine. All machines can be described in terms of input work and output work. In any machine, some of the input work goes to overcoming friction. The output work is always less than the input work because of the energy lost to frictio ...
Chemistry 1
... 10.Ans: The criterion for spontaneous process is G = H - TS < 0 at constant T and P. (a) For most combustion reactions, H < 0, and H overwhelms the contribution of the –TS term for the G being always negative. (b) For endothermic reactions, H > 0, the only way for G < 0 is TS > H, so S m ...
... 10.Ans: The criterion for spontaneous process is G = H - TS < 0 at constant T and P. (a) For most combustion reactions, H < 0, and H overwhelms the contribution of the –TS term for the G being always negative. (b) For endothermic reactions, H > 0, the only way for G < 0 is TS > H, so S m ...
Conservation of Energy
... Answer: mgR Begin by writing KEi + PEi = KEf + PEf . You get the same answer regardless of where you place the zero of PE. CTEnergy-2. A projectile is fired with an initial speed vo at an angle from the horizontal. What is the KE of the projectile when it is on the way down at a height h above the ...
... Answer: mgR Begin by writing KEi + PEi = KEf + PEf . You get the same answer regardless of where you place the zero of PE. CTEnergy-2. A projectile is fired with an initial speed vo at an angle from the horizontal. What is the KE of the projectile when it is on the way down at a height h above the ...
Chemical Reactions and Energy
... II. Two Laws of Thermodynamics • Increased disorder (entropy) is offset by biological processes that maintain order. • Living systems do not violate the _2nd Law (States that entropy increases with time) • How is order maintained? • By coupling (stacking) processes that increase entropy with those ...
... II. Two Laws of Thermodynamics • Increased disorder (entropy) is offset by biological processes that maintain order. • Living systems do not violate the _2nd Law (States that entropy increases with time) • How is order maintained? • By coupling (stacking) processes that increase entropy with those ...
Physics 101
... Two masses 3 meters from each other exert a gravitational force of 300 Newtons on each other. If those same two masses were brought closer to a distance of 1 m from each other, what would be the force of attraction between them? a) 100 N b) 300 N c) 2700 N d) 8100 N ...
... Two masses 3 meters from each other exert a gravitational force of 300 Newtons on each other. If those same two masses were brought closer to a distance of 1 m from each other, what would be the force of attraction between them? a) 100 N b) 300 N c) 2700 N d) 8100 N ...
Conservation of energy
... Positive external work done by the environment on the system carries energy into the system, thereby increasing its total energy; vice versa. ...
... Positive external work done by the environment on the system carries energy into the system, thereby increasing its total energy; vice versa. ...
3 Conservation of Mechanical Energy II: Springs, Rotational Kinetic
... stretched. The spring energy depends on how stiff the spring is and how much it is stretched or compressed. The stiffness of the spring is characterized by the force constant of the spring, k. k is also referred to as the spring constant for the spring. The stiffer the spring, the bigger its value o ...
... stretched. The spring energy depends on how stiff the spring is and how much it is stretched or compressed. The stiffness of the spring is characterized by the force constant of the spring, k. k is also referred to as the spring constant for the spring. The stiffer the spring, the bigger its value o ...
Refresher - UF Physics
... calculus course (Calc 3). Listed below are some of the concepts in basic math, calculus, and physics that you are expected to know or to acquire during this course. This is not a complete summary of introductory math and physics. It is only meant to be a refresher of some of the concepts used in thi ...
... calculus course (Calc 3). Listed below are some of the concepts in basic math, calculus, and physics that you are expected to know or to acquire during this course. This is not a complete summary of introductory math and physics. It is only meant to be a refresher of some of the concepts used in thi ...
Chapter 8
... § If not, use principle of conservation of mechanical energy. § Determine if any work is done across the boundary of your system by forces ...
... § If not, use principle of conservation of mechanical energy. § Determine if any work is done across the boundary of your system by forces ...
Work PE and KE Packet
... In science, “work” is defined with an equation. Work is the amount of force applied to an object (in the same direction as the motion) over a distance. By measuring how much force you have used to move something over a certain distance, you can calculate how much work you have accomplished. The form ...
... In science, “work” is defined with an equation. Work is the amount of force applied to an object (in the same direction as the motion) over a distance. By measuring how much force you have used to move something over a certain distance, you can calculate how much work you have accomplished. The form ...
Chapter 10 and 11 Work and Energy
... An “elastic” material is one that exhibits a restoring force, a force that acts so that it restores a system to an equilibrium position. Examples are springs and rubber bands. An elastic material stores potential energy when it is deformed and restores it when it returns to equilibrium. Microscopica ...
... An “elastic” material is one that exhibits a restoring force, a force that acts so that it restores a system to an equilibrium position. Examples are springs and rubber bands. An elastic material stores potential energy when it is deformed and restores it when it returns to equilibrium. Microscopica ...
Handout - Introduction to Simple Harmonic Motion KEY
... Windmills always turn counter-clockwise--except for the windmills in Ireland. Zero is the only number that cannot be represented by Roman numerals. Janet Guthrie was the first woman to race in the Indianapolis 500. Karate actually originated in India, but was developed further in China. The expressi ...
... Windmills always turn counter-clockwise--except for the windmills in Ireland. Zero is the only number that cannot be represented by Roman numerals. Janet Guthrie was the first woman to race in the Indianapolis 500. Karate actually originated in India, but was developed further in China. The expressi ...