1. (i) iron 1 for 1 mark (ii) 20 2 gains 2 marks else working gains 1
... any three of the following: use a coil with more turns or increase loops of wire or more coils use a stronger magnetic field or magnet or magnets closer together wind coil onto an iron core rotate coil faster reduce resistance of the coil or bulb or circuit or use thicker wire or increase ...
... any three of the following: use a coil with more turns or increase loops of wire or more coils use a stronger magnetic field or magnet or magnets closer together wind coil onto an iron core rotate coil faster reduce resistance of the coil or bulb or circuit or use thicker wire or increase ...
Explore 2: Shifting Plates and Wandering Poles
... Some rocks are naturally magnetized. How? When igneous rocks cool down from the molten stage, or when sand grains gently settle down through water, the iron-rich molecules tend to align themselves with Earth’s magnetic field. It is the alignment of atomic forces within certain rocks that creates a m ...
... Some rocks are naturally magnetized. How? When igneous rocks cool down from the molten stage, or when sand grains gently settle down through water, the iron-rich molecules tend to align themselves with Earth’s magnetic field. It is the alignment of atomic forces within certain rocks that creates a m ...
Maxwell Eguations and Electromagnetic Waves
... The divergence of a curl must equal zero, it is an identity so: JG ∇⋅J = 0 At the same time the continuity equation is JG ∂ρ ∇⋅J = − ∂t There is a contradiction between the two equations. Indeed, in non-stationary processes, ρ may change with time (this is what happens with the charge density on the ...
... The divergence of a curl must equal zero, it is an identity so: JG ∇⋅J = 0 At the same time the continuity equation is JG ∂ρ ∇⋅J = − ∂t There is a contradiction between the two equations. Indeed, in non-stationary processes, ρ may change with time (this is what happens with the charge density on the ...
Interference between electric and magnetic concepts in introductory physics Scaife *
... magnetic force questions correctly, but surprisingly many students incorrectly answer that electric forces are perpendicular to electric fields, as would happen if a student confused electric forces with magnetic forces. As a further indication of interference between electric and magnetic concepts, ...
... magnetic force questions correctly, but surprisingly many students incorrectly answer that electric forces are perpendicular to electric fields, as would happen if a student confused electric forces with magnetic forces. As a further indication of interference between electric and magnetic concepts, ...
Interference between electric and magnetic concepts in introductory
... magnetic force questions correctly, but surprisingly many students incorrectly answer that electric forces are perpendicular to electric fields, as would happen if a student confused electric forces with magnetic forces. As a further indication of interference between electric and magnetic concepts, ...
... magnetic force questions correctly, but surprisingly many students incorrectly answer that electric forces are perpendicular to electric fields, as would happen if a student confused electric forces with magnetic forces. As a further indication of interference between electric and magnetic concepts, ...
The Earth`s Magnetic Field
... Before the theory of a non-trivial dynamo in Earth’s interior, there were suggestions that the Earth’s magnetic field was produced by a strong permanent magnet located in its center. However, ferromagnetic material, like iron in the Earth’s core, cannot be magnetized above their Curie temperature, t ...
... Before the theory of a non-trivial dynamo in Earth’s interior, there were suggestions that the Earth’s magnetic field was produced by a strong permanent magnet located in its center. However, ferromagnetic material, like iron in the Earth’s core, cannot be magnetized above their Curie temperature, t ...
STARTRAK PIGGING TECHNOLOGIES, INC. PIPELINE PIG
... THE INTELIGENT PIPELINE MARKER StarTrak Pigging Technologies, Inc. introduce their patented “Watchdog” @ System. This cost effective system is designed to increase efficiency, security and safety factors for pipeline operations personnel. “Watchdog” functions are as follows: ...
... THE INTELIGENT PIPELINE MARKER StarTrak Pigging Technologies, Inc. introduce their patented “Watchdog” @ System. This cost effective system is designed to increase efficiency, security and safety factors for pipeline operations personnel. “Watchdog” functions are as follows: ...
Middle School Math Scope and Sequence
... physical science: Conservation of matter, conservation of energy, motion and forces, and energy transformation. They use what they observe to explain the difference between physical and chemical changes. Introduction to Physical Science is designed to give students the necessary skills for a smooth ...
... physical science: Conservation of matter, conservation of energy, motion and forces, and energy transformation. They use what they observe to explain the difference between physical and chemical changes. Introduction to Physical Science is designed to give students the necessary skills for a smooth ...
Modern magnetic field sensors – a review
... It should be noted that term “magnetic field sensor1” does not mean that the sensor is used to magnetic field detection or measurement. For example only very small part of Hall sensors are used to magnetic field measurements – main part is used to mechanical measurement (proximity sensors, sensors i ...
... It should be noted that term “magnetic field sensor1” does not mean that the sensor is used to magnetic field detection or measurement. For example only very small part of Hall sensors are used to magnetic field measurements – main part is used to mechanical measurement (proximity sensors, sensors i ...
Supplementary Information for
... mentioned here have similar high frequency behavior, which can be readily, and intuitively, determined by inspecting the SRR and cantilever orientations in the unit cell with respect to the electric field orientation and then applying the arguments described here. 5. Linewidth Considerations The sim ...
... mentioned here have similar high frequency behavior, which can be readily, and intuitively, determined by inspecting the SRR and cantilever orientations in the unit cell with respect to the electric field orientation and then applying the arguments described here. 5. Linewidth Considerations The sim ...
Magnetochemistry
Magnetochemistry is concerned with the magnetic properties of chemical compounds. Magnetic properties arise from the spin and orbital angular momentum of the electrons contained in a compound. Compounds are diamagnetic when they contain no unpaired electrons. Molecular compounds that contain one or more unpaired electrons are paramagnetic. The magnitude of the paramagnetism is expressed as an effective magnetic moment, μeff. For first-row transition metals the magnitude of μeff is, to a first approximation, a simple function of the number of unpaired electrons, the spin-only formula. In general, spin-orbit coupling causes μeff to deviate from the spin-only formula. For the heavier transition metals, lanthanides and actinides, spin-orbit coupling cannot be ignored. Exchange interaction can occur in clusters and infinite lattices, resulting in ferromagnetism, antiferromagnetism or ferrimagnetism depending on the relative orientations of the individual spins.