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CBe-Learn |Ph s 30 Unit B Assignment | Forces and Fields Students will investigate electric and magnetic forces and fields and their applications in technological devices. In order to receive marks for a question, your work must be displayed in a neat, organized manner. As part of this assignment, you will be assessed for your scientific communication. For all algebraic questions, you must show: s An equation from the Alberta Education data booklet * A rearranged equation (if necessary) * Substitution including units s The correct answer including the appropriate units, sig digs and direction (if necessary) Use the following information to answer the next three questions. Three identical conducting spheres attached to insulating stands are given different charges, as shown in the diagram below. c \" Conducting Sphere Insulating Stand Note: Each \"+"and \"'represents 1 C of charge. 1a) Determine the initial charge of the system (total charge of spheres A, B and C). Use the following additional information to answer the next two questions. A student then performs the following procedure, in this order: Step I: Touch spheres 'A' and 'B' together, then separate them. Step 2: Touch spheres 'B' and *C' together, then separate them. Step 3: Touch spheres 'A' and 'C' together, then separate them. 1b) Determine the charge of each individual sphere and the charge of the system (total charge of spheres A, B and C) after the student performs the procedure. 1c) Which of the physics principles on the back of the Alberta Education 'Physics Data Sheet' is used in the determination of the charge of the system after the student performs the procedure? 4 Conservation of moaeatum Conservation of cocrgy & Comseryation of mass enciy o of charge o of oo 7 Conser # Conser 9 Wanc.particle duality Lab-Based Section Use the following information to answer the lab based scenario. A student performed an experiment in an attempt to verify the magnitude of charge on a single metal sphere. The student charged a conducting sphere connected to an insulating stand by putting it in contact with a Van der Graaf generator. The student then contacted the charged, conducting sphere with an identical conducting sphere and then separated them. The student then put one of the conducting sphere apparatuses on a digital scale and zeroed it so that the scale had a reading of 0.00 g. The student then put the other conducting sphere at different distances from the conducting sphere on the scale and measured the mass reading for each trial. The graph of the student's results is shown below: mvs. 1/, m(x10~"kg) 25 i 1 i 5 2a) Determine the slope of the m vs = graph, in the correct units. Note: Do not round your slope. 2b) Graphically (using your slope), determine the charge on one of the charged metal spheres. Use the following information to answer the next question. A light (approximately massless) frame supports a rectangular conducting wire WXYZ that is balanced horizontally at its midpoint within a 2.0 T magnetic field created by a solenoid, as shown below. Sides WX and YZ are 10.0 em long and are parallel to the magnetic field within the solenoid. Side XY is 3.5 cm long and is perpendicular to the magnetic field within the solenoid. A 50-g mass hangs from the outside end of the massless frame. 3 - 7) Determine magnitude of the current required through the rectangular conducting wire to keep the system in horizontal equilibrium (stationary). Use the following information to answer the next question. Identical spheres A, B, and C, each with a charge of magnitude 6.0 x 106 C, are situated at three corners of a square whose sides are 0.25 m long. Spheres 'A' and 'C' are positive, while sphere 'B' is negative. Point 'x' is located at the other corner of the square, as shown in the diagram below. A B 3) Determine the net electric field at point 'x". Include a vector addition diagram of the net eletric field at point x" as part of your solution. Use the following information to answer the next question. An electron, initially travelling at 2.0 x 108 M/ horizontally, enters a region exactly halfway between two 4.0-cm long parallel plates. The plates are 2.00 cm apart from each other with a potential difference of 4.00 V. The electron leaves the region between the parallel plates with a deflection upwards, as shown in the diagram below. or =18_ P i Note: Gravitational, frictional and edge effects are negligble and this diagram is not drawn to scale. 4a) Determine the charge (postive / negative) Plate #2. 4b) Determine the direction of the electric field between Plate #1 and Plate #2. 4c) Determine the magnitude of the electric field between Plate #1 and Plate #2. 4d) Determine the angle, 8, that the electron leaves the region between the parallel plates at. 5) An electron travelling at 6.00 x 107 m/s [north] enters a 4.00 x 10 T [south] magnetic field. Determine the magnitude of the magnetic force that the electron feels while moving in the magnetic field. Use the following information to answer the next question. A Cu* ion has a mass of 1.06 x 102% kg. The copper ion is accelerated from rest through a potential difference of 825 V where it exits the parallel plates through a small hole and enters a magnetic field of 0.600 T, as shown in the diagram below. The copper ion travels in path where it either reaches detector 'A' 'B', or 'C". XX XX XX XX XX XXX KHXXXHXXRXKXXXXX XX XX XX XXX X X X X XXX X XX X X XX XX X XXXXXXXXXXXXX XX X X XK KK XK X X X X 5a) Does the ion reach detector 'A", 'B or *C'? 5b) Determine the radius of the Cu* ion while it is moving within the magnetic field. 5) Two of the physies prineiples numbered on the Alberta Education 'Physics Data Sheet' must be used to determine the radius of the Cu* ion while it is moving within the magnetic field. The two principles, in the order in which they must be used, are Number: d Physics Principle: b used first used second 6) A mass spectrometer uses a potential difference of 2.00 kV to accelerate a singly charged ion. Then, a 0.400 T magnetic field bends the ion into a circular path of radius 0.226 m. What is the mass of the ion
