Chemical Thermodynamics Survival Kit
... In our convention, if q is a positive number, it means the heat is being absorbed by the system (heat gain) and if it is a negative number, heat is being given out (heat loss). Also, in the same convention, if w is a positive number, the work is being done on the system (“work gain”), and if it is a ...
... In our convention, if q is a positive number, it means the heat is being absorbed by the system (heat gain) and if it is a negative number, heat is being given out (heat loss). Also, in the same convention, if w is a positive number, the work is being done on the system (“work gain”), and if it is a ...
The angular momentum of particle subject to no torque is conserved.
... Conservative Forces (cont’d) • Potential energy is thus NOT an absolute quantity: it does not have an absolute value. • Likewise, the Kinetic Energy is also NOT an absolute quantity: it depends on the specific rest frame used to measure the velocity. ...
... Conservative Forces (cont’d) • Potential energy is thus NOT an absolute quantity: it does not have an absolute value. • Likewise, the Kinetic Energy is also NOT an absolute quantity: it depends on the specific rest frame used to measure the velocity. ...
Work done?
... (a) Calculate the work you do on the pumpkin as you lift it from the ground?! (b) What is the work done on the pumpkin by gravity as you lift it from the ground?! (c) What is the total work done on the pumpkin as it is lifted from the ground? ...
... (a) Calculate the work you do on the pumpkin as you lift it from the ground?! (b) What is the work done on the pumpkin by gravity as you lift it from the ground?! (c) What is the total work done on the pumpkin as it is lifted from the ground? ...
Class 09
... Help Us Calculate Work If a force is conservative, then the work it does on a particle that moves between two points is the same for all paths connecting those points. This is handy to know because it means that we can indirectly calculate the work done along a complicated path by calculating the wo ...
... Help Us Calculate Work If a force is conservative, then the work it does on a particle that moves between two points is the same for all paths connecting those points. This is handy to know because it means that we can indirectly calculate the work done along a complicated path by calculating the wo ...
Widely separated binary systems of very low mass stars Phan Bao
... no work, i.e. no energy transfer to the system, the force can change the KE or PE of the system. Her KE increases due to internal transfers from the biochemical energy in her muscles ...
... no work, i.e. no energy transfer to the system, the force can change the KE or PE of the system. Her KE increases due to internal transfers from the biochemical energy in her muscles ...
Energy Review
... 8. Several friends use a simple rope and pulley to raise a tree house from the ground into a tree. The mass of the tree house is 150 kg. By pulling together, the friends manage to exert an average force of 1.6 x 103 N as they raise the tree house a distance of 3.2 m above the ground. a. Find the wor ...
... 8. Several friends use a simple rope and pulley to raise a tree house from the ground into a tree. The mass of the tree house is 150 kg. By pulling together, the friends manage to exert an average force of 1.6 x 103 N as they raise the tree house a distance of 3.2 m above the ground. a. Find the wor ...
A lever is used to lift a rock. Will the work done by the person on the
... – Gravity and elastic forces are conservative. – The energy due to the work done by these forces change between kinetic and potential energy, but the sum of the two is constant. – Friction is not conservative. – work done by friction force change to heat. ...
... – Gravity and elastic forces are conservative. – The energy due to the work done by these forces change between kinetic and potential energy, but the sum of the two is constant. – Friction is not conservative. – work done by friction force change to heat. ...
Physics Exam Review – Science 10 Define heat and temperature
... Physics Exam Review – Science 10 ...
... Physics Exam Review – Science 10 ...
Work, Energy, & Power
... when referring to thermal (heat) energy. By definition, a calorie is the amount of energy needed to raise the temperature of 1.0 gram of water (= 1.0 mL) at standard atmospheric ...
... when referring to thermal (heat) energy. By definition, a calorie is the amount of energy needed to raise the temperature of 1.0 gram of water (= 1.0 mL) at standard atmospheric ...
Physical Science
... iii. Two kinds of forces: contact and non-contact. (Non-contact are gravity, electromagnetic force). Non-contact forces impact motion through fields. iv. Force has a direction. v. Newton’s three laws. b. Types of Interactions i. Gravity. Always attractive, never repulsive. What does gravity depend o ...
... iii. Two kinds of forces: contact and non-contact. (Non-contact are gravity, electromagnetic force). Non-contact forces impact motion through fields. iv. Force has a direction. v. Newton’s three laws. b. Types of Interactions i. Gravity. Always attractive, never repulsive. What does gravity depend o ...
Kinetic Energy
... We can make estimates of energy in systems (potential energy, kinetic energy) if we know mass, force, velocity, etc. We can use these estimates to form maximum outside bounds as to the useful work we could get from a system. ...
... We can make estimates of energy in systems (potential energy, kinetic energy) if we know mass, force, velocity, etc. We can use these estimates to form maximum outside bounds as to the useful work we could get from a system. ...
Lectures 22
... Roller Coaster with Friction A roller coaster of mass m starts at rest at height y1 and falls down the path with friction, then back up until it hits height y2 (y1 > y2). Assuming we don’t know anything about the friction or the path, how much work is done by friction on this path? ...
... Roller Coaster with Friction A roller coaster of mass m starts at rest at height y1 and falls down the path with friction, then back up until it hits height y2 (y1 > y2). Assuming we don’t know anything about the friction or the path, how much work is done by friction on this path? ...
Lecture 14
... Work done is NOT independent of path : Change the State of a gas two different ways: Consider n moles of an ideal gas Initial condition: Ti = 300 K, Vi = 2 liter, pi = 2 atm. Final condition: Tf = 300 K, Vf = 1 liter, pf = 4 atm. Path 1 consists of two steps: ...
... Work done is NOT independent of path : Change the State of a gas two different ways: Consider n moles of an ideal gas Initial condition: Ti = 300 K, Vi = 2 liter, pi = 2 atm. Final condition: Tf = 300 K, Vf = 1 liter, pf = 4 atm. Path 1 consists of two steps: ...
Potential Energy and Conservation of Mechanical Energy
... A force is conservative if the work done by it on a particle that moves between two points depends only on these points and not on the path followed. A force is nonconservative if the work done by it on a particle that moves between two points depends on the path taken between these two points. The ...
... A force is conservative if the work done by it on a particle that moves between two points depends only on these points and not on the path followed. A force is nonconservative if the work done by it on a particle that moves between two points depends on the path taken between these two points. The ...
gravitational potential energy
... The motion of the mass is not constant-acceleration motion, and therefore we cannot use our old kinematics equations. One way to analyze motion when spring force is involved is to look at energy before and after some motion. © 2013 Pearson Education, Inc. ...
... The motion of the mass is not constant-acceleration motion, and therefore we cannot use our old kinematics equations. One way to analyze motion when spring force is involved is to look at energy before and after some motion. © 2013 Pearson Education, Inc. ...
Part I
... • Up to now, we’ve expressed Newton’s Laws of Motion using the concepts of position, displacement, velocity, acceleration & force. ...
... • Up to now, we’ve expressed Newton’s Laws of Motion using the concepts of position, displacement, velocity, acceleration & force. ...
Exam.2
... 6. A 20.0-gram mass is attached to a 120 cm-long string as shown in Figure. The angle a is measured to be 18.0°. What is the speed of the mass? A) 1.95 m/s B) 3.82 m/s C) 1.18 m/s D) 1.09 m/s 7. An object is moving with constant velocity. Which of the following statements is true? A) A constant forc ...
... 6. A 20.0-gram mass is attached to a 120 cm-long string as shown in Figure. The angle a is measured to be 18.0°. What is the speed of the mass? A) 1.95 m/s B) 3.82 m/s C) 1.18 m/s D) 1.09 m/s 7. An object is moving with constant velocity. Which of the following statements is true? A) A constant forc ...
Work, Energy & Power
... the direction!!!! IT simply means that the force and displacement oppose each other. The ANGLE between the force and displacement in this case is 180 degrees. What happens when you put this in for the COSINE? When the FORCE and DISPLACEMENT are PERPENDICULAR, you get NO WORK!!! The ANGLE between the ...
... the direction!!!! IT simply means that the force and displacement oppose each other. The ANGLE between the force and displacement in this case is 180 degrees. What happens when you put this in for the COSINE? When the FORCE and DISPLACEMENT are PERPENDICULAR, you get NO WORK!!! The ANGLE between the ...
Work Energy KE PPT from class
... the direction!!!! IT simply means that the force and displacement oppose each other. The ANGLE between the force and displacement in this case is 180 degrees. What happens when you put this in for the COSINE? When the FORCE and DISPLACEMENT are PERPENDICULAR, you get NO WORK!!! The ANGLE between the ...
... the direction!!!! IT simply means that the force and displacement oppose each other. The ANGLE between the force and displacement in this case is 180 degrees. What happens when you put this in for the COSINE? When the FORCE and DISPLACEMENT are PERPENDICULAR, you get NO WORK!!! The ANGLE between the ...