Forces - faculty at Chemeketa
... Laws of Thermodynamics The first law of thermodynamics is a statement of conservation of energy. If a system gains or loses internal energy, then that gain or loss is from a process and the energy must come from or go somewhere. There are two general ways to gain or lose energy. Work is a macroscopi ...
... Laws of Thermodynamics The first law of thermodynamics is a statement of conservation of energy. If a system gains or loses internal energy, then that gain or loss is from a process and the energy must come from or go somewhere. There are two general ways to gain or lose energy. Work is a macroscopi ...
Thermodynamic Systems
... and heat Q between a thermodynamic system and its surrounding environment gives a change in internal energy: U = Q – W Paths between thermodynamic states Q and W depend upon the path taken between two states. U depends only on the initial and final states, i.e. U is independent of the path and do ...
... and heat Q between a thermodynamic system and its surrounding environment gives a change in internal energy: U = Q – W Paths between thermodynamic states Q and W depend upon the path taken between two states. U depends only on the initial and final states, i.e. U is independent of the path and do ...
Distance, Velocity, Momentum, Force, Pressure, Work and Energy
... Work done to lift an object of mass m a height h: W = Fg h = mgh. Work done against friction: W = Ff x. ...
... Work done to lift an object of mass m a height h: W = Fg h = mgh. Work done against friction: W = Ff x. ...
HP UNIT 5 work & energy - student handout
... A block of wood with mass 0.50 kg is initially at rest on an incline of 30o where μk = 0.30. A person gives the block a quick push up the incline, parallel to surface, and lets go. The block slides a total distance of 2.0 m from beginning to end before stopping. Find the speed of the block at releas ...
... A block of wood with mass 0.50 kg is initially at rest on an incline of 30o where μk = 0.30. A person gives the block a quick push up the incline, parallel to surface, and lets go. The block slides a total distance of 2.0 m from beginning to end before stopping. Find the speed of the block at releas ...
…And Energy
... horizontally off the cliff at a speed of 38.0 m/s. Ignoring air resistance, find the speed at which the motorcycle strikes the ground on the other side. The motorcycle starts at a height of 70.0m and will end at a height of 35.0m. ...
... horizontally off the cliff at a speed of 38.0 m/s. Ignoring air resistance, find the speed at which the motorcycle strikes the ground on the other side. The motorcycle starts at a height of 70.0m and will end at a height of 35.0m. ...
CHAPTER 7 SOLUTION FOR PROBLEM 17 (a) Let F be the
... The work done by the cable is given by W = T d, where T is the tension force of the cable and d is the distance the elevator cab travels (d1 in part (a) and d2 in part (b)). According to Newton’s second law the acceleration of the cheese (and also of the elevator) is a = FN /mc , where mc is the mas ...
... The work done by the cable is given by W = T d, where T is the tension force of the cable and d is the distance the elevator cab travels (d1 in part (a) and d2 in part (b)). According to Newton’s second law the acceleration of the cheese (and also of the elevator) is a = FN /mc , where mc is the mas ...
7.3 Energy
... Objectives: •Define different forms of mechanical energy. •Apply work-energy theorem to energy changes in mechanical systems. ...
... Objectives: •Define different forms of mechanical energy. •Apply work-energy theorem to energy changes in mechanical systems. ...
7TH CLASSES PHYSICS DAILY PLAN
... If an object has a distance (or a height) from the earth, it has s a potential energy. The amount of energy is determined by the mass of the object, its height and the gravitational constant. ...
... If an object has a distance (or a height) from the earth, it has s a potential energy. The amount of energy is determined by the mass of the object, its height and the gravitational constant. ...
Inclined Planes Block on a Ramp, Example
... does on an object depends on the path taken by the object between its final and starting points. • Examples of nonconservative forces – kinetic friction, air drag, propulsive forces ...
... does on an object depends on the path taken by the object between its final and starting points. • Examples of nonconservative forces – kinetic friction, air drag, propulsive forces ...
Physics 11 exam outline
... Work has units of newtons times metres or Nm. This combination of units has a name itself : 1Nx1m = 1joule or j for short. There are cases when forces or displacements are present yet no work is done. 1. F=0, d ≠0 2. F≠0, d=0 3. F is perpendicular to d Energy (E) Energy is defined as the ability ...
... Work has units of newtons times metres or Nm. This combination of units has a name itself : 1Nx1m = 1joule or j for short. There are cases when forces or displacements are present yet no work is done. 1. F=0, d ≠0 2. F≠0, d=0 3. F is perpendicular to d Energy (E) Energy is defined as the ability ...
Compared to the amount of energy required to accelerate a car from
... Concept Question: Consider two carts, of masses m and 2m, at rest on an air track. If you push first one cart for 3 s and then the other for the same length of time, exerting equal force on each, the kinetic energy of the light cart is 1. larger than 2. equal to 3. smaller than the kinetic energy of ...
... Concept Question: Consider two carts, of masses m and 2m, at rest on an air track. If you push first one cart for 3 s and then the other for the same length of time, exerting equal force on each, the kinetic energy of the light cart is 1. larger than 2. equal to 3. smaller than the kinetic energy of ...
The Binary Star Experiment What is a Binary Star? Outline
... • Conservation of momentum means that if no outside influences are acting on the system, then the momentum of its center of mass will not change. • So, ptotal = mtotalvcm where boldface means a vector, and vcm is the velocity of the center of mass. This shows that the center of mass moves at a const ...
... • Conservation of momentum means that if no outside influences are acting on the system, then the momentum of its center of mass will not change. • So, ptotal = mtotalvcm where boldface means a vector, and vcm is the velocity of the center of mass. This shows that the center of mass moves at a const ...
Energy and Angular Momentum
... If Fdr is independent of path (and this will be true if F = 0), then we can define a potential energy: V(r) = - rsr Fdr (where rs is some standard position). If all the forces in the problem can be put in terms of potential energies, then we can use the Conservation of Energy to relate the vel ...
... If Fdr is independent of path (and this will be true if F = 0), then we can define a potential energy: V(r) = - rsr Fdr (where rs is some standard position). If all the forces in the problem can be put in terms of potential energies, then we can use the Conservation of Energy to relate the vel ...
Document
... Gravitation is a sort of conservative force --defined to be one where the associated energy, U, is determined solely by the position. When only conservative forces are involved, the total mechanical energy, E, is conserved (i.e., equal to a constant). But if non-conservative forces are involved, E i ...
... Gravitation is a sort of conservative force --defined to be one where the associated energy, U, is determined solely by the position. When only conservative forces are involved, the total mechanical energy, E, is conserved (i.e., equal to a constant). But if non-conservative forces are involved, E i ...
Waves & Oscillations Physics 42200 Spring 2015 Semester
... • We get the total kinetic energy by integrating over the length of the spring: ...
... • We get the total kinetic energy by integrating over the length of the spring: ...
Work Done File
... The basic unit of energy is the Joule (J). Energy is of no use to us unless we can transfer it from one form to another form and in the process do some “work”. ...
... The basic unit of energy is the Joule (J). Energy is of no use to us unless we can transfer it from one form to another form and in the process do some “work”. ...
Forces and Energy Homework File
... (c) Suggest a way of reducing the friction between the box and the floor. ______________________________________________________________ ___________________________________________________________ [1] ...
... (c) Suggest a way of reducing the friction between the box and the floor. ______________________________________________________________ ___________________________________________________________ [1] ...
The Functional Form of the Internal Energy
... outlined previously. If a system transits between states A and B adiabatically, then: U = W If the path is not adiabatic, then U is given by the First Law of Thermodynamics: U = Q + W Attempts to measure U by measuring each of the above microscopically mentioned energies will surely fail. Therefo ...
... outlined previously. If a system transits between states A and B adiabatically, then: U = W If the path is not adiabatic, then U is given by the First Law of Thermodynamics: U = Q + W Attempts to measure U by measuring each of the above microscopically mentioned energies will surely fail. Therefo ...