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klasskru [66]
3 years ago
10

Mulri choice plz helppp​

Physics
1 answer:
hoa [83]3 years ago
6 0

Answer:

3

Explanation:

because that time observe then they got green

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Which statement is true about an object moving in a circular motion due to centripetal force, F, when the mass is doubled? A. It
Allushta [10]
Force = [Mass x (velocity)^2]/Radius
Therefore,
The mass and the force are directly proportional.If you double the mass,the force will be doubled too.

A. Its centripetal force would <span>be doubled.</span>
3 0
3 years ago
Why does a block of plastic released under water come up to the surface of water.
SCORPION-xisa [38]

A block of plastic released under water will come up to the surface of the water because the density of the plastic is less than the density of water.

<h3>What is density?</h3>

Density is the amount of mass a substance contains per its unit volume. It means the number of particles that can be packed into a unit space of that substance.

<h3>How does density determine whether an object will float or sink?</h3>

When an object is immersed in a liquid, it experiences two forces - gravitational force and an upward buoyant force called upthrust. If the density of the object is more than the density of the liquid, gravitational force will be greater than upthrust and the object will sink, but if the density of the object is less than the density of the liquid, upthrust will be greater than gravitational force and the object will float. That is why a block of plastic will come up to the surface when released under water, because it is less dense than water.

Learn more about density here:

brainly.com/question/6329108

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7 0
2 years ago
Which one of these birds is an experimental population
kkurt [141]

Answer Whooping Crane

An experimental population is a geologically depicted gathering of reintroduced plants or creatures that is segregated from other existing populaces of the species. It is done to protect the endangered species from getting extinct. Whooping crane is also one of those birds which were endangered and experimental population technique was used.

4 0
3 years ago
Read 2 more answers
If you push twice as hard against a stationary brick wall, the amount of work you do
Alecsey [184]

Answer:

Zero

Explanation:

The work done on an object is given by:

W=Fd cos \theta

where

F is the force applied on the object

d is the displacement of the object

\theta is the angle between the direction of the force and the displacement

In this problem, you are pushing again a stationary wall: this means that the walls does not move. As a result, the displacement is zero: d=0. Therefore, the work done is also zero: W=0.

8 0
3 years ago
Which process changes substances into new substances with new properties?
Y_Kistochka [10]

Answer:

The answer to your question is: Chemical change

Explanation:

Chemical Change  is a change where substances change their properties because new substances are obtain. This is the right answer.

Compressibility is a property in which a substance is compressed but it continous being the being so this answer is wrong.

Malleability  is a property in whcih substances are flattened into thin sheets but they don't change their properties. This answer is wrong.

Physical Change is a change in which a substance changes its physical state but the properties are the same than the original substance, this answer is wrong.

4 0
3 years ago
Read 2 more answers
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