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LiRa [457]
3 years ago
7

Which best describes the speed of the ball as it is thrown straight up into the air and comes back down

Physics
1 answer:
Andrews [41]3 years ago
4 0
Assuming that up is the positive direction, the velocity of the ball goes from it's initial and approaches zero, which it reaches at the apex of it's height. After peaking, the velocity is now reaching the same numbers it had on the way up, only with a negative value this time. If it had a velocity of 5m/s upon leaving the hand, it will have a velocity of -5m/s when it came back to the hand.
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Density of iron in CGS unit is 7.8 g/cm3. Its density is SI is
kumpel [21]

Answer:

7800kg/m³

Explanation:

Density of iron in CGS unit is 7.8 g/cm3. Its density is SI is

Given the density of iron = 7.8 g/cm3.

The SI units must be in kg/m³

7.8g = 7.8/1000 kg

7.8g = 0.0078kg

1cm³ = 0.000001m³

7.8g/cm³

= 0.0078/0.000001 kg/m³

= 7800kg/m³

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4 0
3 years ago
Explain what a concentration gradient is and what it means for a molecule to diffuse down its
MArishka [77]

Answer:

Diffusing the gradient ensures that most of the molecules in high concentration zone will wind up in the previously low concentration by the spontaneous movement of small molecules.

Explanation:

A gradient of concentration is the difference between in concentration of one place / area substance to different area. Having a molecule flow down its concentration gradient means moving the molecules from hypotonic areas to the concentration hypertonic areas

Diffusing the gradient ensures that most of the molecules in high concentration zone will wind up in the previously low concentration by the spontaneous movement of small molecules.

7 0
3 years ago
Do you think there could be another period of time when so many brilliant discoveries are made in such a span of time? Why or Wh
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There won't be another period where many brilliant discoveries are made in such a span of time because of the high degree of advancement already.

<h3>What is Technology?</h3>

Tgis is defined as the application of scientific knowledge for practical purposes.

We have advanced technological advancement which is why there won't be many discoveries in such time span.

Read more about Technology hee brainly.com/question/7788080

8 0
1 year ago
After the pendulum is dropped, determine the height at which the kinetic energy is equal to the potential energy.
Fofino [41]
0.5 m v² = m g h
⇅
h = 0.5 v²/g
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3 years ago
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