3. forces
... from the body in the direction of the cable/rope - if the weight of the rope/cable can be neglected, the rope/cable can be considered as straight and the tension along its length as constant force; otherwise, the cable will sag and the tension will vary along its length (for now, we will assume that ...
... from the body in the direction of the cable/rope - if the weight of the rope/cable can be neglected, the rope/cable can be considered as straight and the tension along its length as constant force; otherwise, the cable will sag and the tension will vary along its length (for now, we will assume that ...
Motion and potential energy graphs
... Consider a body of mass m that is subjected to a single conservative external force. The body will speed up and slow down in such a way that its total mechanical energy is constant. We can qualitatively assess what motion is possible by examining a graph of potential energy. For concreteness, we con ...
... Consider a body of mass m that is subjected to a single conservative external force. The body will speed up and slow down in such a way that its total mechanical energy is constant. We can qualitatively assess what motion is possible by examining a graph of potential energy. For concreteness, we con ...
here
... 14. At what point on the figure above does the substance undergo a phase change? 15. Using the figure above, determine which value equals the latent heat required to change the liquid water into steam. ...
... 14. At what point on the figure above does the substance undergo a phase change? 15. Using the figure above, determine which value equals the latent heat required to change the liquid water into steam. ...
Contrary to everyday usage, the term work has a very specific
... that is not constant. Think of stretching out a spring. The further the spring is stretched, the more force (and thus work) required to move it an additional distance. In order to find the total work required to stretch the spring a given distance, we can think of subdividing the distance the spring ...
... that is not constant. Think of stretching out a spring. The further the spring is stretched, the more force (and thus work) required to move it an additional distance. In order to find the total work required to stretch the spring a given distance, we can think of subdividing the distance the spring ...
Motion and Potential Energy Graphs
... object downwards with acceleration g. As it does so it will lose potential energy P Eg and gain kinetic energy KE in such a way that its total mechanical energy ME remains constant. This motion can be deduced by looking at the potential-energy graph using the two concepts outlined above. Initially K ...
... object downwards with acceleration g. As it does so it will lose potential energy P Eg and gain kinetic energy KE in such a way that its total mechanical energy ME remains constant. This motion can be deduced by looking at the potential-energy graph using the two concepts outlined above. Initially K ...
Reaction Kinetics
... phase change, is the conversion of a substance from one of the 3 states of matter to another. A change of state always involves a change in energy. ...
... phase change, is the conversion of a substance from one of the 3 states of matter to another. A change of state always involves a change in energy. ...
Degrees of freedom
... We have considered the motion of these molecules to be in three directions, in other words we say that the molecule has three degrees of freedom. It is therefore sensible to suppose that one-third of the total energy is associated with each degree of freedom, and this is known as Boltzmann’s law of ...
... We have considered the motion of these molecules to be in three directions, in other words we say that the molecule has three degrees of freedom. It is therefore sensible to suppose that one-third of the total energy is associated with each degree of freedom, and this is known as Boltzmann’s law of ...
Physics – Chapter 10 Worksheet 1
... 13. A ball has a speed of 15 m/s. Only one external force acts on the ball. After this force acts, the speed of the ball is 7 m/s. Has the force done positive or negative work? Explain. 14. When a punter kicks a football, is he doing work on the ball while his toe is in contact with it? Is he doing ...
... 13. A ball has a speed of 15 m/s. Only one external force acts on the ball. After this force acts, the speed of the ball is 7 m/s. Has the force done positive or negative work? Explain. 14. When a punter kicks a football, is he doing work on the ball while his toe is in contact with it? Is he doing ...
1. In which one of the following situations is zero
... initial speed of 10 m/s. The instant before the stone hits the ground below, it has 450 J of kinetic energy. If she were to throw the stone horizontally outward from the cliff with the same initial speed of 10 m/s, how much kinetic energy would it have just before it hits the ground? A) 50 J B) 100 ...
... initial speed of 10 m/s. The instant before the stone hits the ground below, it has 450 J of kinetic energy. If she were to throw the stone horizontally outward from the cliff with the same initial speed of 10 m/s, how much kinetic energy would it have just before it hits the ground? A) 50 J B) 100 ...
Practice exam solutions
... c momentum is conserved so a change in momentum would results in an opposite change in the other participle d internal forces come in action/reaction pairs which would lead to equal magnitude but opposite direction changes in the momentum of the particles conserving the total momentum of the system. ...
... c momentum is conserved so a change in momentum would results in an opposite change in the other participle d internal forces come in action/reaction pairs which would lead to equal magnitude but opposite direction changes in the momentum of the particles conserving the total momentum of the system. ...
Monday, June 19, 2006
... Example of Gravitational Potential Energy A particle of mass m is displaced through a small vertical distance Dy near the Earth’s surface. Show that in this situation the general expression for the change in gravitational potential energy is reduced to the DU=mgDy. ...
... Example of Gravitational Potential Energy A particle of mass m is displaced through a small vertical distance Dy near the Earth’s surface. Show that in this situation the general expression for the change in gravitational potential energy is reduced to the DU=mgDy. ...
