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Q. If an object isn't moving, no external force acts on it.
No it is always not true, there would be balanced forces which cancel each other out leaving no net force. Example: Sitting on a chair, the chair pushes up on you while gravity pulls you down, but you aren't going anywhere because those forces cancel each oyher and net force is equal to zero.
Musical Sounds: Sound that produces pleasant effects on our ear is known as musical sound. Such as sound of flute, violin.
Is negative mass antimatter? No. There is really no such thing as negative mass. Even antimatter has mass, which is always a positive (that is, greater-than-zero) quantity.
The voltage drops across two components when connected in series across an a.c. supply are v1 =150sin 314.2t and v2 =90sin(314.2t -∏/5) volts respectively. Determine (a) the v
show that the oscillation of a liquid in a u-tube is in simple harmonic motion
What is hall Effect? Derive an expression for it.
Describe NOR and NAND gates. Provide their truth tables. Discuss the nature of a p-n junction. How does a potential barrier develop at the junction.
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
The graph below shows a sequence of alpha and beta decays, labeled 1, 2, 3, and 4. Consult Table 30-1 as required. a) Which shows alpha decays, and which represen
How many ports does a fiber optics system have? Depending upon the final use the main common parts to account for in a fundamental system are: bushing, end fittings and illumin
what is an atom
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