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Explain displacement
x(t) is known as displacement and it denotes the position of a body at time. If the displacement is positive then that body is to the right of the chosen origin and if negative, then it is to the left.
If a body is moving with average speed v then in time t it will cover a distance d=vt. But, in fact, the speed of a car alters from time to time and so one should limit the use of this formula to small time differences only. So, more accurately, one explains an average speed over the small time interval t Δ as:
A section through a magnetic circuit of uniform cross-sectional area 2cm 2 is shown in fi gure. The cast steel core has a mean length of 25cm. The air gap is 1mm w
why newtons 2nd law is called the real law of motion?
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What is Ancient view Ancient view: objects tend to stay if they are in motion; force is needed to keep something moving. This was a natural thing to believe in because we see
a) A positive point test charge q 0 is placed at the midpoint p among the two equal positive charges q. What forces acts on it at or near this point p? b) Two charges 1X10 -
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