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3 years ago

Pls help ASAP!! Thank you

Physics

2 answers:

olga55 [171]3 years ago

7 0

Answer:

A. The south pole of one magnet is near the south pole of the other magnet.

Explanation:

Like poles repel.

Unlike poles attract.

Thus:

A should repel each other. (S and S together)

B might not be able to have enough attraction between both magnets to move towards each other so they remain still.

C should attract each other. (N and S together)

D might not be able to have enough repelling power between both magnets to repel each other so they remain still.

Overall, B and D would not have any attraction between each other so they are neutral. C is wrong because they have the strongest attraction while A has the strongest repelling in that situation.

GaryK [48]3 years ago

5 0

Answer:

Explanation:

The answer you should pick is A. Two magnets will attract each other when their poles are opposite and they are close together.

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meriva

Answer:

The initial velocity of the softball is 14.711 meters per second.

Explanation:

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From statement we must understand that the student threw the softball upwards and it is caught at original position 3.56 seconds later. Initial and final heights, time and gravitational acceleration are known and initial speed is unknown. The following equation of motion is used:

$y = y_{o} + v_{o}\cdot t + \frac{1}{2}\cdot g \cdot t^{2}$ (Eq. 1)

Where:

$y_{o}$ - Initial height of the softball, measured in meters.

$y$ - Final height of the softball, measured in meters.

$v_{o}$ - Initial velocity of the softball, measured in meters per second.

$t$ - Time, measured in seconds.

$g$ - Gravitational acceleration, measured in meters per square second.

If we know that $y = y_{o}$ , $t = 3.56\,s$ and $g = -9.807\,\frac{m}{s^{2}}$ , the initial velocity of the softball is:

$v_{o}\cdot (3\,s)+\frac{1}{2}\cdot (-9.807\,\frac{m}{s^{2}} )\cdot (3\,s)^{2} = 0$

$3\cdot v_{o} -44.132\,m= 0$

$v_{o} = 14.711\,\frac{m}{s}$

The initial velocity of the softball is 14.711 meters per second.

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Answer:

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