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Light is shined into a glass rod. To guarantee the total internal reflection (TIR) happens to all the possible rays, what is the minimum index of refraction n for the glass?
Hint: To make sure all rays TIR inside the rod, you just need to consider an extreme case, i.e., the incident angle q1 (on the top surface of glass rod) equals to 90o.
A lead bullet moves horizontally with a velocity of 130 ms-1 and embedded into a cement wall after collision. If the specific heat capacity of lead = 130 JKg-1°C-1 and all heat pro
It takes 46.0 J to raise the temperature of an 10.1 g piece of unknown substance from 13.0 o Cto 40.1 o C. What is the specific heat for the substance?
Q. Illustrate what two properties of electromagnetic waves are used to attach info to radio signals? Answer:- By changing the amplitude of a radio wave you can encode info
An open platform elevator is moving down a mine shaft.After the elevator has travelled 25m [from the top of the shaft]a stone is dropped from the top of the shaft .Find time taken
Give two basic important characteristics of nuclear forces? Neutrons are the best projectiles of process of nuclear reactions. Why? Give any two properties of neutron.
De?ne Pilling-Bed Worth rule. Write about the applications of carbon nanotubes and nanowires.
Can you write me a paper
The current–voltage characteristic curve for a semiconductor diode as a function of temperature T is given by the equation i = i0(eev/kt - 1) Here the ?rst symbol e represen
1 Ampere: 1 ampere current is supposed to be flowing in a conductor if one coulomb of charge flows across section of the wire in one second.
In a non-uniform magnetic material, these substances move from stronger parts of the field to the weaker parts.why?
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