Answer:
<h2>a) 2.5 s</h2><h2>b) 1.55 m</h2><h2 />
Explanation:
<h3>Given :-</h3><h2>Completes 2 oscillation in 5s.</h2><h2>A) Time period = ?</h2><h2 /><h2>
</h2><h2 /><h2>
</h2>
<em>Thus 1 oscillation is completed in 2.5 </em><em>s.</em>
<h2>B) If g = 9.8 ms−², find its length.</h2><h2>
</h2><h3>= 2.5s </h3><h3>
</h3><h3>Length = ? </h3><h2>
</h2><h3 /><h3>
</h3>
Thus the length of g = 9.8 ms −² = 1.55m
<h2>
Hope it helps u.......</h2><h2>
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Newton's law of universal gravation states that every particle attracts every other particles in the universe with a force which is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers
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<span>D. measuring radioactive decay of element isotopes </span>
Answer:
<em>The best explanation is that the first person is grounded to the earth, and his/her body either draws up negative charges from the earth, or tend to conducts negative charges to the earth, depending on the charge on the balloon.</em>
Explanation:
The earth is an infinite store for charges. In the first case where the second person brings a negatively charged balloon towards the first person, the negative charges on the balloon induces the first person's body to tend to attract the negative charges on the balloon through the first person's body to the positive charges within the earth. In the second case when again a positively charged balloon is brought near the first person's hair, the positive charges on the balloon induce the first person's body into drawing up negative charges from within the earth. This charges, and their opposite induced charges, create an attractive force between the hair strands and the balloons.
