[PDF] 2020 Online Physics Olympiad (OPhO): Open Contest v1



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Formulas for Unit Conversion Charts - GeoPathfinder

uT = W/m2 / 239 (Micro-Teslas = Watts per square meter divided by 239) nT = W/m2 / 239,000 (Nano-Teslas = Watts per square meter divided by 239,000) Some other useful conversion formulas are : And some useful predictive (but possibly inaccurate*) conversions between electric, magnetic, and power units:



Design and Fabrication of cm-scale Tesla Turbines

using micro fabrication, theoretical analysis, and ANSYS, COMSOL, and MATLAB simulations A MATLAB GUI is provided for generating design specifications and turbine performance sensitivity In Tesla turbines, the fluid profile and the length of the fluid path inside the rotor control the pressure drop and momentum transfer



Are 50/60 Hz magnetic fields carcinogenic - EMF and health

but at much lower levels, typically around one tenth of a micro Tesla or 0 1 µT Since the current flowing in power lines and electrical wiring is an alternating current, the magnetic field changes direction constantly, at a frequency of 60 or 50 cycles par second (60 or 50 Hz) depending on the country The frequency is 60 Hz in North America and



CAN I SCAN THIS PATIENT? - AAPM HQ

generated by the scanner during a scan It is measured in units of micro-Tesla (μT) It is considered to be a more precise RF exposure metric than SAR because it is patient independent It is increasingly being used as a condition of use, although on older scanners and software versions, it might not be readily located



2020 Online Physics Olympiad (OPhO): Open Contest v1

Write your answer in terms of T(micro-Teslas) Pr 8 Angel Coaster A frictionless track contains a loop of radius R= 0:5 m Situated on top of the track lies a small ball of mass m= 2 kg at a height h It is then dropped and collides with another ball (of negligible size) of mass M= 5 kg m M R h



Guidance for Adjusting MRI scan Sequence SAR and B1+rms Values

is measured in units of micro-Tesla (µT) Understanding the importance of B1+rms to DBS MR Conditional labeling requires a brief overview of some basic MRI physics When a patient enters an MRI magnet, protons in the body align in the direction of the B0 magnetic field, similar to a compass aligning with the earth’s magnetic field



LIGNES A HAUTE TENSION SUR LEXY : ATTENTION DANGER

procéder à la mesure, par un organisme indépendant, de la valeur électromagnétique du champ par rapport aux 0,4 micro-teslas mentionnés sur les documents fournis par EDF lors de l’enquête publique et de publier l’information sur le prochain bulletin municipal



Les ondes pulsées

une porteuse micro-ondes (~1900Mhz / ~2400Mhz / ~5 400 Mhz) En somme, être exposé à de faibles valeurs 24h/24h est pire que d'être exposé ponctuellement à de fortes valeurs C'est l’effet cumulatif, décrit par les Dr Sadickova, Zaret, Lai et Carino depuis 1973, qui démontre que, contrairement aux

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