Conservation of Energy
... Note: Usually work done by friction is negative (because it is in the opposite direction). But since we are ADDING BACK IN the work done by friction it is positive. ...
... Note: Usually work done by friction is negative (because it is in the opposite direction). But since we are ADDING BACK IN the work done by friction it is positive. ...
work and energy
... its initial value after a round trip (during the trip the Ek may vary). A force is non-conservative if the kinetic energy of the particle changes after the round trip (Assume only one force does work on the object). Gravitational, electrostatic and spring forces are conservative forces. Friction is ...
... its initial value after a round trip (during the trip the Ek may vary). A force is non-conservative if the kinetic energy of the particle changes after the round trip (Assume only one force does work on the object). Gravitational, electrostatic and spring forces are conservative forces. Friction is ...
Conservation of Energy Worksheet
... The boulder begins to fall. What is its potential energy when it is 500-m above the ground? Where did the “lost” potential energy go? ...
... The boulder begins to fall. What is its potential energy when it is 500-m above the ground? Where did the “lost” potential energy go? ...
T h - Website Staff UI
... If the entropy of each element in its most state is taken as zero at the absolute zero of temperature, every substance has a positive entropy. But at 0K, the entropy of substance may equals to 0, and does become zero in perfect crystalline solids. Implication: all perfect materials have the same ent ...
... If the entropy of each element in its most state is taken as zero at the absolute zero of temperature, every substance has a positive entropy. But at 0K, the entropy of substance may equals to 0, and does become zero in perfect crystalline solids. Implication: all perfect materials have the same ent ...
Work and Energy
... The total energy of the Universe is unchanged by any physical process. The three kinds of energy are: kinetic energy, potential energy, and rest energy. Energy may be converted from one form to another or transferred between bodies. ...
... The total energy of the Universe is unchanged by any physical process. The three kinds of energy are: kinetic energy, potential energy, and rest energy. Energy may be converted from one form to another or transferred between bodies. ...
m s 1
... Which of the following statements about the Conservation of Energy is NOT true? A) The total energy E of an isolated system cannot change. B) The total energy E of a system can change only by amounts of energy that are transferred to or from the system. C) An applied force can transfer energy into o ...
... Which of the following statements about the Conservation of Energy is NOT true? A) The total energy E of an isolated system cannot change. B) The total energy E of a system can change only by amounts of energy that are transferred to or from the system. C) An applied force can transfer energy into o ...
WPE Blue Practice Book key
... 3. How long does it take a 2.5 kW electric motor to do 75,000 J of work? (30. s) ...
... 3. How long does it take a 2.5 kW electric motor to do 75,000 J of work? (30. s) ...
work
... PEs1 + KEs1 = PEs2 + KEs2 100.J + 0J = 0J + 100J KE2 = 100J = ½ mv22 ; m = 15kg v2 = 3.7m/s ...
... PEs1 + KEs1 = PEs2 + KEs2 100.J + 0J = 0J + 100J KE2 = 100J = ½ mv22 ; m = 15kg v2 = 3.7m/s ...
Physical and Chemical Changes
... A physical change is one in which one makes a different form of the same substance. Physical changes are usually easily reversed. Example: Solid water Liquid ...
... A physical change is one in which one makes a different form of the same substance. Physical changes are usually easily reversed. Example: Solid water Liquid ...
Explaining Motion
... When an object is lifted to a higher position above the ground, work is done by the lifting force against the gravitational force acting on the object (its weight); this increases the object’s gravitational potential energy (GPE); use the equation: change in GPE = weight × vertical height differ ...
... When an object is lifted to a higher position above the ground, work is done by the lifting force against the gravitational force acting on the object (its weight); this increases the object’s gravitational potential energy (GPE); use the equation: change in GPE = weight × vertical height differ ...
Atoms, Elements, Compounds, and Periodic Table Directions
... An example of this is a book resting on a table. Which of Newton’s 3 laws does this follow? 3. According to Newton’s second law, the acceleration of an object is equal to the force divided by the mass. This also means that the force exerted by an object can be found by multiplying the object’s mass ...
... An example of this is a book resting on a table. Which of Newton’s 3 laws does this follow? 3. According to Newton’s second law, the acceleration of an object is equal to the force divided by the mass. This also means that the force exerted by an object can be found by multiplying the object’s mass ...
Work Energy Theorem & KE & PE
... relative quantity in which the height of an object above some reference level must be known. • The work done in increasing the elevation of an object is equal to the change in the G.P.E ∆Eg = mg∆h ...
... relative quantity in which the height of an object above some reference level must be known. • The work done in increasing the elevation of an object is equal to the change in the G.P.E ∆Eg = mg∆h ...
Review2
... dt dt dt •The SI unit for power is the Watt (W). 1 watt = 1 W = 1 J/s = 0.738 ft · lb/s 1 horsepower = 1 hp = 550 ft · lb/s = 746 W 1 kilowatt-hour = 1 kW · h = (103 W)(3600 s) = 3.60 MJ ...
... dt dt dt •The SI unit for power is the Watt (W). 1 watt = 1 W = 1 J/s = 0.738 ft · lb/s 1 horsepower = 1 hp = 550 ft · lb/s = 746 W 1 kilowatt-hour = 1 kW · h = (103 W)(3600 s) = 3.60 MJ ...
Lect14
... Conservative forces interchange U K (work done), but E = K + U is a constant. ΔE = ΔK + ΔU = 0 Work-kinetic energy theorem: ΔK = W thus ΔU = -W, for conservative forces only. • Both K and U can change, but E = K + U remains constant. • But, if non-conservative forces act, then energy can be dissi ...
... Conservative forces interchange U K (work done), but E = K + U is a constant. ΔE = ΔK + ΔU = 0 Work-kinetic energy theorem: ΔK = W thus ΔU = -W, for conservative forces only. • Both K and U can change, but E = K + U remains constant. • But, if non-conservative forces act, then energy can be dissi ...
NAME: Honors Physics When is Mechanical Energy not Conserved
... When is Mechanical Energy not Conserved ...
... When is Mechanical Energy not Conserved ...
Lecture 9
... across the floor at a constant speed by applying a force of 50 N at an angle of 30 degrees. How much work is done by the 50 N force? N ...
... across the floor at a constant speed by applying a force of 50 N at an angle of 30 degrees. How much work is done by the 50 N force? N ...