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A fishing line's lead sinker has a volume of 1.40 x 10-5 m3. The density of lead is 1.2 x 104 kg/m3.
What is the apparent weight of the sinker when immersed in freshwater?
Seawater is slightly denser than freshwater.
Is the sinker's apparent weight bigger or smaller in seawater? Define.
An object starts from point A and moves with constant acceleration in a straight line. 5 seconds after the start, it crosses point B, and 7 seconds after the start it crosses poin
A bar magnet is overhanging vertically above a closed coil of wire. The bar magnet is unconfined. It remainder vertical as it come near the coil falls straight through the coil and
There is a point between the Earth and the Moon where the gravitational effects of the two bodies balance each other. Calculate the distance from the center of the Earth to this po
A medium is characterised by relative permittivity ε r =45 and relative permeability μ r =5. Determine the speed of e-m wave in the refractive and medium index of the medium.
Are the optics efficient as a means to transport the light? No, optics is not efficient as a means to transport the light. If we take any other means of light distribution or
A hiker tosses a rock into a canyon. He hears it strike water 4.78 s later. How far down is the surface of the water?
(1) The current in a super conductor once set up continuous for a very long time without attenuations. (2) The permeability of a super conducto
Light is quantized. Photons are light quanta. It has zero REST mass. Therefore, it always travels at maximum speed permitted by relativity
Conventional Current: Earlier scientists had no knowledge of the concept of electron, so the developed the convention, still in use, , that the direction of current is for appo
Types of Rectifier: Half wave Rectifier: The half wave rectifier allows positive half cycle of alternating current to pass through the circuit but negative half cycle is s
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