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Physics : Recent Questions and Answers (Page 733)

Find answers to your questions about Physics or help others by answering their Physics questions.

Can a magnet induce current in a stationary, straight copper wire?

If a magnet moves near a coil, it generates a changing flux which generates current due to Faraday's Law. Clearly there is no flux when we consider a straight wire,...

Asked on 12/16/2020 by curiousgeorge

1 answer

Finding the electric field at a point from half of a uniformly charged rod

The image below is a rod of length $L$ that is uniformly charged to total charge $Q$ at a point along the perpendicular bisector of the rod above...

Asked on 12/16/2020 by Genevieve

1 answer

Integer Quantum Hall Effect: Corbino Ring Derivation

Why are we allowed to consider adding extra flux to the system? When we measure the hall resistance, we don't add such a flux. Why is this not considered a...

Asked on 12/16/2020 by safcphysics

0 answer

What happens to Penrose diagram in vicinity of massive objects?

I want to know if we put massive object in near Penrose diagram of hypothetical object what happens to spacetime grid? recently I watched some YouTube videos suggesting convergence of...

Asked on 12/16/2020 by Safdar Safdari

0 answer

Rotating Uniformly Charged Ring

Does a uniformly charged ring, rotating about its axis produce Electric Field on its axis( as a non-rotating charged ring does)? I am comfortable with elementary ideas that would come...

Asked on 12/16/2020 by Kiteretsu

0 answer

Heat change of mixing substances in different phases

10 g of water at 70C is mixed with 5g of water at 30C Find temperature of mixture in equilibriumI solve this problem by first converting the water at 70C...

Asked on 12/16/2020

2 answer

Finding the spring compression length for an object to reach $U = 0$

I have a question on the following, pertaining to only parts c and d (b was shown to provide the mass of the asteroid and radius): - ...

Asked on 12/16/2020

1 answer

How a sudden acceleration change splits gravity waves into a pair of counter-propagating components? ("instantaneous time mirror")

The Nature article Time reversal and holography with spacetime transformations is cited by IFL Fluid Dynamics' Waves contain lots of information which includes the...

Asked on 12/16/2020

1 answer

Shape change of buckled sheet under change of load

I need to solve the following problem: a sheet of flexible but inextensible material (can be modelled as cable or chain in 2D) is fixed in endpoints and buckles up....

Asked on 12/16/2020 by el_maquinista

0 answer

Thermodynamic derivations of quantities using fugacity

The objective of this problem was to find a $K$ such that as $T$ changes with $V$ for an adiabatic, reversible (isentropic) process for a real gas,...

Asked on 12/16/2020

0 answer

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