end of section a
... An object is initially at rest. Suddenly it explodes into three fragments of masses 2 kg, 8 kg and 10 kg. The 8-kg and 10-kg fragments fly away with speeds 4 m s1 and 6 m s1 respectively, at an angle of 60 to each other. What is the speed of the 2-kg fragment? ...
... An object is initially at rest. Suddenly it explodes into three fragments of masses 2 kg, 8 kg and 10 kg. The 8-kg and 10-kg fragments fly away with speeds 4 m s1 and 6 m s1 respectively, at an angle of 60 to each other. What is the speed of the 2-kg fragment? ...
Chapter 1
... EM force (strong)*** Weak-interaction force (weak) Gravitational force (weakest) Electric field Fe = Electrical force: The source of electrical force is electric charge. Elementary charge e = 1.6 10-19 (C) Coulomb’s law: The magnitude of the force (Fe21) on q2 due to q1 is given by: q1 ...
... EM force (strong)*** Weak-interaction force (weak) Gravitational force (weakest) Electric field Fe = Electrical force: The source of electrical force is electric charge. Elementary charge e = 1.6 10-19 (C) Coulomb’s law: The magnitude of the force (Fe21) on q2 due to q1 is given by: q1 ...
BilaksPhysiks
... 3. What is meant by an electric potential difference VBA between two points? A: It is the electric potential energy with respect to infinity of a unit positive charge. B: It is the work that must be done to move a unit charge slowly from b to a against an electric force. C: It is the negative of th ...
... 3. What is meant by an electric potential difference VBA between two points? A: It is the electric potential energy with respect to infinity of a unit positive charge. B: It is the work that must be done to move a unit charge slowly from b to a against an electric force. C: It is the negative of th ...
hw06_solutions
... 4. Alpha particles of charge q 2e and mass m 6.6 1027 kg are emitted from a radioactive source at a speed of 1.6 107 m s . What magnetic field strength would be required to bend them into a circular path of radius r 0.25 m? Solution The magnetic force is perpendicular to the velocity. In ...
... 4. Alpha particles of charge q 2e and mass m 6.6 1027 kg are emitted from a radioactive source at a speed of 1.6 107 m s . What magnetic field strength would be required to bend them into a circular path of radius r 0.25 m? Solution The magnetic force is perpendicular to the velocity. In ...
Carriers of negative electricity J.
... by an electrified body as well as by a magnet. In the earlier experiments made on this point no such deflection was observed. The reason of this has been shown to be that when cathode rays pass through a gas they make it a conductor of electricity, so that if there is any appreciable quantity of gas ...
... by an electrified body as well as by a magnet. In the earlier experiments made on this point no such deflection was observed. The reason of this has been shown to be that when cathode rays pass through a gas they make it a conductor of electricity, so that if there is any appreciable quantity of gas ...
Today`s Powerpoint
... to, or less than at point D? C. What is the approximate magnitude of the electric field at point C? D. What is the approximate direction of the electric field at point C? ...
... to, or less than at point D? C. What is the approximate magnitude of the electric field at point C? D. What is the approximate direction of the electric field at point C? ...
(electric field of a point charge).
... former position’s point P (Fig. 22-10b). We say that the charged body A produces or causes an electric field at point P (and at all other points in the neighborhood). This electric field is present at P even if there is no other charge at P; it is a consequence of the charge on body A only. If a poi ...
... former position’s point P (Fig. 22-10b). We say that the charged body A produces or causes an electric field at point P (and at all other points in the neighborhood). This electric field is present at P even if there is no other charge at P; it is a consequence of the charge on body A only. If a poi ...
chapter 23 electric field
... point. The line has a direction, indicated by an arrowhead, that is the same as that of the electric field vector. The direction of the line is that of the force on a positive test charge placed in the field. The number of lines per unit area through a surface perpendicular to the lines is proport ...
... point. The line has a direction, indicated by an arrowhead, that is the same as that of the electric field vector. The direction of the line is that of the force on a positive test charge placed in the field. The number of lines per unit area through a surface perpendicular to the lines is proport ...
Electrostatics
Electrostatics is a branch of physics that deals with the phenomena and properties of stationary or slow-moving electric charges with no acceleration.Since classical physics, it has been known that some materials such as amber attract lightweight particles after rubbing. The Greek word for amber, ήλεκτρον electron, was the source of the word 'electricity'. Electrostatic phenomena arise from the forces that electric charges exert on each other. Such forces are described by Coulomb's law.Even though electrostatically induced forces seem to be rather weak, the electrostatic force between e.g. an electron and a proton, that together make up a hydrogen atom, is about 36 orders of magnitude stronger than the gravitational force acting between them.There are many examples of electrostatic phenomena, from those as simple as the attraction of the plastic wrap to your hand after you remove it from a package, and the attraction of paper to a charged scale, to the apparently spontaneous explosion of grain silos, the damage of electronic components during manufacturing, and the operation of photocopiers. Electrostatics involves the buildup of charge on the surface of objects due to contact with other surfaces. Although charge exchange happens whenever any two surfaces contact and separate, the effects of charge exchange are usually only noticed when at least one of the surfaces has a high resistance to electrical flow. This is because the charges that transfer to or from the highly resistive surface are more or less trapped there for a long enough time for their effects to be observed. These charges then remain on the object until they either bleed off to ground or are quickly neutralized by a discharge: e.g., the familiar phenomenon of a static 'shock' is caused by the neutralization of charge built up in the body from contact with insulated surfaces.