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3 years ago

How can a model be created to predict how forces affect objects at a distance?

Physics

1 answer:

olchik [2.2K]3 years ago

8 0

Answer:

Gravitational force increases as the masses of the objects increase and decreases as the distance between the objects increases. Balanced forces acting on an object cause no change in the motion of the object. When unbalanced forces act on an object, the sum of the forces is not equal to zero.

Explanation:

put it in your own words

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Keesha did an experiment to study the rate of photosynthesis in the water plant Elodea. She placed a piece of Elodea in a beaker

KIM [24]

What is the outcome variable in this experiment?

The dependent variable which is the outcome of bubbles produced.

Keesha did an experiment to study the rate of photosynthesis in the water plant Elodea.

My guess would be that since we initially know what the experiment is for, the key phrase is:

Keesha counted the bubbles released from the plant every minute for five minutes (min). She repeated the process two more times.

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3 years ago

When population growth increases in an area, what is happening to the birth rate and age structure of that population?

xxMikexx [17]

The birth rate would be increasing due to the increasing population. The age structure would therefore be becoming more diverse as more people were being born and most likely immigrating into that population.

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4 years ago

What is Earth's role in the hierarchy of organization within the universe

Yuliya22 [10]

In the hierarchy of Organization within the universe , currently Earth placed as the 3rd Planet (after Mercury and Venus) , and the only planet that provided living organisms with enough resources to live such as water, foods, breathing air, etc.

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3 years ago

Speedy Sue, driving at 35.0 m/s, enters a one-lane tunnel. She then observes a slow-moving van 160 m ahead traveling at 5.20 m/s

steposvetlana [31]

Answer:

Hence, there will be a collision

Explanation:

First we calculate total distance covered by the speedy sue's car before coming to rest:

2as = Vf² - Vi²

where,

a = deceleration = - 1.9 m/s²

s = distance covered = ?

Vf = Final Velocity = 0 m/s (since car finally stops)

Vi = Initial Velocity = 35 m/s

Therefore,

2(-1.9 m/s²)s = (0 m/s)² - (35 m/s)²

s = 322.37 m

Now, we calculate time taken by car to stop:

Vf = Vi + at

0 m/s = 35 m/s + (-1.9 m/s²)t

t = 18.42 s

Now, we calculate distance traveled by van in this time:

s₁ = V₁t

where,

s₁ = distance traveled by van = ?

V₁ = speed of van = 5.2 m/s

Therefore,

s₁ = (5.2 m/s)(18.42 s)

s₁ = 95.78 m

Now, for collision to occur, the following relation must be satisfied:

s ≥ 160 m + s₁

using values:

322.37 m > 160 m + 95.78 m

322.37 m > 255.78 m

<u>Hence, there will be a collision</u>

3 0

4 years ago

Calculate the number of vacancies per cubic meter at 1000°C for a metal that has an energy for vacancy formation of 1.22 eV/atom

Daniel [21]

To solve this problem, it is necessary to take into account the concepts of the number of vacations N_v at a given temperature as well as the calculation of the number of atom sites per cubic meter.

For definition the number of atomic sites per cubic meter is given as,

$N = \frac{N_A\rho}{A}$