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PROJECTILE:
"When a body is thrown upward making a particular angle 'Q' with the horizontal and moves freely under the action of gravity, it is known as a projectile".
EXAMPLES:
(i) A thrown base ball.
(ii) A fired missile.
(iii) A bullet fired from a gun.
Electrical measuring instruments: Quantities of electrical current, voltage and resistance are measured using instruments called meters. Until the advent of electronic displays
moment of inertia theory
Explain physically how a p-n junction functions as a rectifier. Ans: When a P-N junction diode is forward-biased and applied voltage is increased from zero, hardly any current
Where is the electric potential because of a single negatively charged particle a maximum? Answer: One could acquire at this one by looking at the formula for the electri
Explain Transmitters and Receivers Your radio is able to give you the news or play music because it can receive signals that are transmitted by radio stations. Radio waves are el
The given circuit diagram shows a series LCR circuit linked to a variable frequency 230 V source: (a) Verify the source frequency which drives the circuit in resonance. (b) G
what are the examples of like and unlike parallel forces?
A force of 2.5kN is needed to lift a load. How much work is done if the load is lifted by 500cm? An electromagnet exerts a force of 12N and moves a soft iron armature by a dist
The number of unpaired electrons in the Fe2 + ion is: (1) 0 (2) 4 (3) 6 (4)3 Ans: 4
Q. What are secondary cells? Give an example? i) They are rechargeable. ii) The chemical reactions which take place in secondary cells are reversible. iii) The active mat
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