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Explain Buoyancy in Air
The same buoyancy happens in air. This is how hot air balloons fly. By heating the air and lowering the density of the air in the balloon, the balloon floats in the unheated (more dense) air.
A person is tasked with creating a ray diagram to resolve the characteristics of the image of an object formed by a concave lens. The person has accurately drawn the principal axis
Low resistivity materials: The conducting materials having resistivity between 10 -8 to 10 -6 ohm-m come under this category and are used in house wiring, as conductors for powe
The energy possessed by a object by virtue of its motion is known as kinetic energy (KE). The KE of a moving body is similar to the amount of work that must be given to bring a
why effective mass are tensor quantities
Magnetic force on a moving charge Oersted also discovered that anytime a charge is moving in an area where a magnetic field exists, it experiences a force which is sometimes call
In class, we learned that the force on a dipole can be written as F = (p.Δ)E This force can be used to sort particles with no net charge but with a dipole moment in a method cal
A metal rod of mass 10 g and length 10 cm is placed on a smooth 60 degree incline. A uniform magnetic field B is applied in the region vertically downwards . If a current of 3 A is
Explain quasi-static isothermal expansion A method is reversible only if it is quasi-static and non dissipative. E.g. A quasi-static isothermal expansion of an ideal gas
A 105-N suitcase sits on a rubber ramp at an airport carousel at a 25° angle. The weight vector can be broken into two perpendicular components. a. What is the magnitude of the
Review guide: gases: heat, temperature, volume
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