Lecture 13: Fluids
... the weight of the fluid displaced by the object. Archimedes’s Principle – The fluid pressure increases with depth and exerts forces that are the same whether the submerged object is there or not. – Buoyant forces do not depend on the composition of submerged objects. – Buoyant forces depend on the d ...
... the weight of the fluid displaced by the object. Archimedes’s Principle – The fluid pressure increases with depth and exerts forces that are the same whether the submerged object is there or not. – Buoyant forces do not depend on the composition of submerged objects. – Buoyant forces depend on the d ...
Electromagnetic Induction and Alternating Current
... In India Domestic power supply is at 220 V, 50 Hz; while in USA it is 110 V, 50 Hz. Give one advantage and one disadvantage of 220 V supply over 110 supply. A coil of inductance L, a capacitor of capacitance C and resistor of resistance R all put in series with an alternating source of emd E = E0 si ...
... In India Domestic power supply is at 220 V, 50 Hz; while in USA it is 110 V, 50 Hz. Give one advantage and one disadvantage of 220 V supply over 110 supply. A coil of inductance L, a capacitor of capacitance C and resistor of resistance R all put in series with an alternating source of emd E = E0 si ...
DISCOVERING AND ANALYZING MAGNETIC FIELDS
... Students were given time to discuss their results with a partner to see what similarities and differences they measured. Then I had the students try to explain why their results were different or similar. We then discussed the relationship of the deflecting force of the magnetic field and compared i ...
... Students were given time to discuss their results with a partner to see what similarities and differences they measured. Then I had the students try to explain why their results were different or similar. We then discussed the relationship of the deflecting force of the magnetic field and compared i ...
Document
... in his book “The Evolution of Physics” that “The formulation of these equations is the most important event in physics since Newton’s time, and they are the quantitative mathematical description of the laws of the field. Their content is much richer than we have been able to indicate, and the simple ...
... in his book “The Evolution of Physics” that “The formulation of these equations is the most important event in physics since Newton’s time, and they are the quantitative mathematical description of the laws of the field. Their content is much richer than we have been able to indicate, and the simple ...
Electromagnetic Induction
... evitation? There is no superconductor or permanent magnet in this photograph. The ring is made of aluminum, a non-magnetic conductor. The coil of wire around the central rod produces a continually changing magnetic field. You may never have seen such a floating ring, but the physical principle that ...
... evitation? There is no superconductor or permanent magnet in this photograph. The ring is made of aluminum, a non-magnetic conductor. The coil of wire around the central rod produces a continually changing magnetic field. You may never have seen such a floating ring, but the physical principle that ...
File
... causing them to repel and separate from one another. Along those same lines, when the second balloon was rubbed against the dry hair and placed next to the first balloon, they repelled each other due to having the same charge. 3. Activity 3 also demonstrated the same idea as described above. Since a ...
... causing them to repel and separate from one another. Along those same lines, when the second balloon was rubbed against the dry hair and placed next to the first balloon, they repelled each other due to having the same charge. 3. Activity 3 also demonstrated the same idea as described above. Since a ...
Neutrons and Fundamental Physics - Institut Laue
... in a material. ❙❙ Neutrons have a spin, or magnetic moment, which can interact with the electron spins in magnetic materials. Beams of polarised neutrons (in which all the spins are aligned) offer a unique tool for characterising exotic materials with complex magnetic structures and behaviour – an a ...
... in a material. ❙❙ Neutrons have a spin, or magnetic moment, which can interact with the electron spins in magnetic materials. Beams of polarised neutrons (in which all the spins are aligned) offer a unique tool for characterising exotic materials with complex magnetic structures and behaviour – an a ...
Magnets
... There are two types of poles – N pole and S pole. Each magnet has (at least) one N pole and one S pole – it is impossible for a magnet to have only one pole. The two poles are near the ends but inside the magnet. The magnetic interaction is very weak (or zero) at the midpoint between the two poles. ...
... There are two types of poles – N pole and S pole. Each magnet has (at least) one N pole and one S pole – it is impossible for a magnet to have only one pole. The two poles are near the ends but inside the magnet. The magnetic interaction is very weak (or zero) at the midpoint between the two poles. ...
VELOCITIES MEASURED IN SMALL-SCALE SOLAR MAGNETIC ELEMENTS Øystein Langangen, Mats Carlsson, and
... In the Sun’s photosphere one can observe magnetic structures in a range of different scales: from sunspots tens of megameters in size to small-scale magnetic elements of about 200 km or less. Observationally these small-scale magnetic elements become visible as features brighter than the surrounding ...
... In the Sun’s photosphere one can observe magnetic structures in a range of different scales: from sunspots tens of megameters in size to small-scale magnetic elements of about 200 km or less. Observationally these small-scale magnetic elements become visible as features brighter than the surrounding ...
PPTX
... • Bending angles at time t=0 and t=T/2 are the same if we consider only the gravitational bending. • The bending angle will be different by magnetic field ...
... • Bending angles at time t=0 and t=T/2 are the same if we consider only the gravitational bending. • The bending angle will be different by magnetic field ...
Ferrofluid
A ferrofluid (portmanteau of ferromagnetic and fluid) is a liquid that becomes strongly magnetized in the presence of a magnetic field.Ferrofluid was invented in 1963 by NASA's Steve Papell as a liquid rocket fuel that could be drawn toward a pump inlet in a weightless environment by applying a magnetic field.Ferrofluids are colloidal liquids made of nanoscale ferromagnetic, or ferrimagnetic, particles suspended in a carrier fluid (usually an organic solvent or water). Each tiny particle is thoroughly coated with a surfactant to inhibit clumping. Large ferromagnetic particles can be ripped out of the homogeneous colloidal mixture, forming a separate clump of magnetic dust when exposed to strong magnetic fields. The magnetic attraction of nanoparticles is weak enough that the surfactant's Van der Waals force is sufficient to prevent magnetic clumping or agglomeration. Ferrofluids usually do not retain magnetization in the absence of an externally applied field and thus are often classified as ""superparamagnets"" rather than ferromagnets.The difference between ferrofluids and magnetorheological fluids (MR fluids) is the size of the particles. The particles in a ferrofluid primarily consist of nanoparticles which are suspended by Brownian motion and generally will not settle under normal conditions. MR fluid particles primarily consist of micrometre-scale particles which are too heavy for Brownian motion to keep them suspended, and thus will settle over time because of the inherent density difference between the particle and its carrier fluid. These two fluids have very different applications as a result.