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zysi [14]
3 years ago
7

If an object has a constant negative acceleration, what can we assume about the forces on it?

Physics
2 answers:
steposvetlana [31]3 years ago
4 0

Answer:

It is slowing down at a constant rate

Explanation:

oksian1 [2.3K]3 years ago
3 0
Its slowing down I believe
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61 pts!!!!!!!!!!!!!!!!!!!
Olegator [25]
A plane figure with at least three straight sides and angles, and typically five or more.Polygon-

Consecutive vertices-The endpoints of one side of a polygon.



diagonal of a polygon A polygon with all the angles equal and all the sides equal. regular polygon Any closed figure bounded by three or more segments that only intersect at their endpoints. The segments are called the sides, and the endpoints are called the vertices of the polygon. Plz mark me brainliest! Hope this helps!
3 0
3 years ago
Read 2 more answers
An oil tank has a base of area 2.5 m2 and is filled with oil to a depth of 1.2 m. The density of the
asambeis [7]

Answer:

D. F = 24000[N]

Explanation:

To be able to calculate the force we must first find the pressure at the bottom of the tank. By means of the following equation:

P=Ro*g*h

where:

Ro = density of the liquid = 800 [kg/m³]

g = gravity acceleration = 9.81 [m/s²]

h = elevation = 1.2 [m]

P=800*9.81*1.2\\P=9417.6[Pa]

Pressure is defined as the relationship between Force on the area.

P=F/A\\F=9417.6*2.5\\F = 23544 [N] = 24000[N]

3 0
3 years ago
The half-life of a certain element is 100 days. How many half-lives will it be before only one-eighth of this element remains?
Natalka [10]

Answer:

3

Explanation:

The half-life is the time it takes for the amount of radioactive isotope to halve. Therefore, we have:

- After 1 half-life, only 1/2 of the element will be left

- After 2 half-lives, only 1/4 of the element will be left

- After 3 half-lives, only 1/8 of the element will be left

So, it will take 3 half-lives for the element to become 1/8 of its original amount.

Mathematically, this can be also verified by using the equation

\frac{N(t)}{N_0}=(\frac{1}{2})^\frac{t}{\tau_{1/2}}

where

N(t) is the amount of the element left at time t

N0 is the initial amount of the element

\tau_{1/2} is the half-life

Substituting t=3\tau_{1/2} (3 half-lives), we find

\frac{N(t)}{N_0}=(\frac{1}{2})^3=\frac{1}{8}

7 0
3 years ago
What is the name for a star and planets held together by gravity? A. solar system B. galaxy C. black hole D. supernova
DaniilM [7]
These answers aren´t valid .

The correct answer will be:

Planetary system.
5 0
3 years ago
Please help what is the definition ligthspeed
aev [14]

Light speed is the speed at which light can travel in a "vacuum" (space for example).

The speed of light is constant and is exactly: 299,792,458 meters per second

ONLY IN A VACUUM!!

The speed of light changes when it goes through different mediums (such as from space to Earth, light travels slower in Earth).

Good luck!

3 0
3 years ago
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