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lesantik [10]
2 years ago
14

PLEASE HELP ME I DONT UNDERSTAND THIS AND THIS IS TIMED

Physics
1 answer:
mixer [17]2 years ago
5 0

(C)

Explanation:

The circle has a radius r = 0.5 m, which means that its circumference C is

C = 2\pi r = 2\pi(0.5\:\text{m}) = 3.14\:\text{m}

One revolution means that the stopper travels a distance equal to the circumference of the circle so the velocity of the stopper is

v = \dfrac{C}{t} =\dfrac{3.14\:\text{m}}{0.2\:\text{s}} = 15.7\:\text{m/s} \approx 16\:\text{m/s}

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' A ' and ' D ' are both correct statements.

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Fall at equal acceleration with similar displacements.

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A 0.15 kg baseball is hit by a baseball bat. Right before it is hit, the ball’s speed is 30 m/s, and right after it is hit, the
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Answer:

Impulse will be 12 kgm/sec

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5 0
2 years ago
Sometimes, I have to take my cat, Gigi, in the car. She doesn’t like this, and tends to hide under the couch when she knows she
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Answer:

F - fr = ma ,    N - W = 0

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On the y axis

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A diagram of these forces can be seen in the attachment

8 0
2 years ago
Where are the most reactive nonmetal elements found on the periodic table?
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Answer;

At the top of group 17

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Reactivity in chemistry deals with whether something will react with another substance. The reactivity of an element can be predicted based on its location on the periodic table.

The most reactive nonmetal is fluorine. Fluorine is a halogen, which is Group 17 on the periodic table, and the halogens are the most reactive nonmetals. This is because they all have one empty space in their valence electron shells. Of the halogens, fluorine's empty space is closest to the positively charged nucleus. This means it pulls harder on another atom's electrons to fill that empty space.

8 0
3 years ago
Read 2 more answers
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