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Hace 3 días · Hint: Electromagnetic waves are those waves which have changing electric and magnetic fields while transporting energy and momentum through space. They require no medium and can travel through vacuum. Complete step-by-step answer: EM waves are known as the solutions of Maxwell’s equations.
Hace 4 días · Hint: we know that the minute hand, the hour hand and the second’s hand of the clock moves around a complete a \[2\pi \] rotation. We do not know anything about translation because the hands are in the rotational motion. So, we can use the relationship between rotation and translation for velocity to solve this problem.
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21 de may. de 2024 · (ii) His resultant velocity is $8.66 kmph$. (iii) He would take $332.56$ seconds to cross the river. Note: The horizontal component of swimmers' velocity will work on the velocity of river flow. Only the vertical component of swimmers' velocity will contribute to helping him to cross the river.
Hace 3 días · We know that velocity is the ratio of displacement of a body and the time in which it takes place. So, \[v = \dfrac{d}{t}\] (a) On converting the length of the minute hand from centimetre to metre, we get, $9cm = 0.09m$ Similarly, on converting 30 minutes between 3 am to 3:30 am into seconds, we get,
