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wlad13 [49]
3 years ago
13

How does friction,acceleration,speed and net force relate to each other?

Physics
1 answer:
Ludmilka [50]3 years ago
8 0
<span>Friction – the force that acts to resist the relative motion (or attempted motion) of objects or materials that are in contact
</span><span>Acceleration – the change in velocity per certain time interval; how quickly motion changes</span>
<span>Net Force – the combination of all the forces that act on an object

</span>Isaac Newton<span>’s Second Law of Motion (F=ma) explains the relationship between force and acceleration in motion. The application of force on an object causes an acceleration of that object. Yet, force is not the only factor in the movement, or acceleration of an object. The two main influences on the acceleration of an object are net force and mass. For example, net force is directly proportional to acceleration while mass is inversely proportional to acceleration. In other words, net force- the force that has overcome friction and accelerates an object- is directly linked to acceleration; the more force you have, the faster an object goes.Other factors such as the friction, air or fluid resistance, and pressure effect the acceleration as well. All of these factors do not work against or in accordance with acceleration in the same way. Friction works in opposition to acceleration. Friction involves two objects that are in direct contact with on another but are moving in different directions. Involved with friction is air and fluid resistance. Fluid resistance, such as liquids or gases, focuses on when the object is moving in the opposite direction of a fluid flow or through a dense area of fluid. Air resistance involves movement through the air. The most noticeable effect of air resistance is when and object travels into a strong breeze or wind. And finally pressure, pressure refers to an applied force. With pressure you will find that the overall weight of and object doesn’t change no matter how you stand or lay it but you will fill more pressure from that same object depending on the force per surface area. The weight of the object has not changed but you that area of application the force feels greater. That is the pressure increase. In Newton’s Second Law, the areas such as free falling verse vacuum suction are also compared with the falling of objects.
</span>
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Approximately what core temperature is required before hydrogen fusion can begin in a star?
valkas [14]

Answer:

The temperature required is near about 3 million kelvin

Explanation:

The brilliance of the star results from the nuclear reaction that take place in the core of the star and radiate a huge amount of thermal energy resulting from the fusion of hydrogen into helium.

For this reaction to take place, the temperature of the star's core must be near about 3 million kelvin.

The hydrogen atoms collide and starts and the energy from the collision results in the heating of the gas cloud. As the temperature comes to near about 1.5\times 10^{7 {\circ}C, the nuclear fusion reaction takes place in the core of the gas cloud.

The huge amount of thermal energy from the nuclear reaction gives the gas cloud a brilliance resulting in a protostar.

8 0
3 years ago
Why do scientists not use US customary units when reporting their data?
Marianna [84]
From britaññica it said time and money. They didn’t have either to switch over from the industrial period and never did. Also from my own person reasoning i think most of the world uses not US customary, so to make stuff more accessible. hope this helps!
8 0
3 years ago
Is there a link between the number of bulbs and current drawn from the power pack?
LuckyWell [14K]

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Yes there is if number of bulb is high the bulbs wouldn't glow much brighter

Explanation:

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3 years ago
Business are necessary in order to preform which of the following functions
NeTakaya

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Hire, organize, and supply workers.

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7 0
2 years ago
A system gains 767 kJ of heat, resulting in a change in internal energy of the system equal to +151 kJ. How much work is done?
Crazy boy [7]

Answer:

The work done on the system is -616 kJ

Explanation:

Given;

Quantity of heat absorbed by the system, Q = 767 kJ

change in the internal energy of the system, ΔU = +151 kJ

Apply the first law of thermodynamics;

ΔU = W + Q

Where;

ΔU  is the change in internal energy

W is the work done

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W = ΔU  - Q

W = 151 - 767

W = -616 kJ (The negative sign indicates that the work is done on the system)

Therefore, the work done on the system is -616 kJ

6 0
3 years ago
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