Can prokaryotes have more than one cell
2 answers:
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<h2>Answer:</h2>
To answer this question, let's start by clarifying that every body or object that freely falls in a fluid (in this case the air) <u>has a terminal velocity.</u>
In the particular case of a raindrop (which we assume in a <u>spherical shape</u>) that begins its fall from a certain altitude; it will accelerate (with <u>gravity acceleration</u>) until reaching the terminal velocity, just at the moment when the air friction compensates its weight.
To understand it better, when a raindrop falls, two forces act on it:
1. The force of air friction, also called "drag force" :
Where:
is the drag coefficient
is the air density
is the velocity
is the frontal or transversal area of the object (the raindrop)
So, this force is proportional to the transversal area of the falling element (the raindrop) and to the square of the velocity.
2. Its weight due to the gravity force :
Where:
is the mass of the raindrop
is the acceleration due gravity
Then, at the moment when the drag force equals the gravity force:
The raindrop will have its terminal velocity.
This also means, the larger the raindrop size, the higher its terminal velocity.
In other words, as the drop falls, gravity force pulls it down all the time, but along the descent a force in the opposite direction - upwards - acquires importance, due to the air friction.
<u>The following proposals would make the scientist to accomplish this goal:</u>
- decreasing the distance between Hox and Blox
- increasing the mass of Hox
- increasing the mass of Hox and Blox
Answer: Options A, B, and E
<u>Explanation:</u>
The gravitational pull on an object by another, is nothing but the force that it exerts due to its gravity. Earth has gravity, so it pulls down everything that tends to move up. Similarly, Hox and Blox have gravitational pulls on each other, due to their gravitational forces.
Where,
F = force exerted on object
G – Gravitational constant
– Mass of two objects
r – Distance between two objects
This gravitational pull varies in phase with the mass of two bodies in relation, and inversely proportionate to the distance square. Hence, the scientist could do less the distance between the bodies, or else, spend to increase the size of one of them or both the bodies.