## Rusting, Physics

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Would a nail rust in oil and water or water and oxygen?

#### Draw a labelled diagram of van de graff generator, An a.c. voltage E = E 0 ...

An a.c. voltage E = E 0 sin cot is applied across an inductor L. Get an expression for current I. Draw a labelled diagram of Van de Graff generator. Verify its principle of wor

#### Has vc a limit, Has Vc a limit? Answer; precisely, but we do not know i...

Has Vc a limit? Answer; precisely, but we do not know its limit. But we know it is greater than c.

what is gravity

#### Describe the radiation resistance of an antenna, a. Describe the radiation ...

a. Describe the radiation resistance of an antenna. b. With sketch, explain the feed mechanism of a parabolic reflector c. Explain the given term:- (i) Horn Antenna (ii

#### ACOUSTICS, * Question 1 : Sound A has intensity 10 times the threshold if ...

* Question 1 : Sound A has intensity 10 times the threshold if hearing : sound B has intensity 100 times the threshold of haring . How much louder do we perceive sound B ? * Ques

#### What are the limitations of electron microscope, Q. What are the limitation...

Q. What are the limitations of electron microscope? An electron microscope is operated merely in high vacuum. This prohibits the utilize of the microscope to study living organ

#### Biot-savart law, Biot-Savart law (J.B. Biot, F. Savart) A law defines ...

Biot-Savart law (J.B. Biot, F. Savart) A law defines the contributions to a magnetic field through an electric current. This is analogous to Coulomb's law. Mathematically spec

#### Pendulum, a pendulum is timed ,first for 20 swings and then for 50 swings ;...

a pendulum is timed ,first for 20 swings and then for 50 swings ; time for 20 swings = 17.4 sec and time for 50 sec = 43.2. calculate the average time per swing/

#### Describe null and alternative hypothese, 1- Two researchers test the same h...

1- Two researchers test the same hypothesis. Researcher A rejects the null hypothesis and researcher B fails to reject the null hypothesis. Discuss three reasons that could cause

#### greatest and least magnitude , The greatest and least magnitude of the res...

The greatest and least magnitude of the resultant of two forces of constant magnitude are P & Q. Proof that when the forces act at an angle of 2 alpha, their resultant is of magnit