Answer:
Fluid friction.
Explanation:
Friction can be defined as a force that resists the relative motion of two objects when there surface comes in contact. Thus, it prevents two surface from easily sliding over or slipping across one another. Also, friction usually reduces the efficiency and mechanical advantage of machines but can be reduced through lubrication.
Generally, there are four (4) main types of friction and these includes;
I. Static friction.
II. Rolling friction.
III. Sliding friction.
IV. Fluid friction.
Fluid friction can be defined as a type of friction that acts on objects moving through a liquid or gas. A fluid refers to any physical substance that can flow and is able to take the shape of a container.
Answer: The correct answer is : B. Laboratory experiments do not generally reflect real-life circumstances.
Explanation: One of the advantages of laboratory experiments is that cause-effect relationships are easier to consider. In a laboratory the independent variables are manipulated by the experimenters.
Answer: 4
(IV)
Explanation:
From the question, the researcher is interested in determining whether smiling and warmth impact the number of friends one has.
The variables are; Amount of smiling (a little, a lot) and self-rated warmth (cold, warm).
Manipulating the variables by the researcher or experimenter is called the free variables(IV). It is free to be varied. What is to be measured is called the dependent variable(∆V); it depends in the manipulation of free variables
Waiting time for a 100 Mbps broadcast channel is 0.512 ms
Recall that with the CSMA/CD protocol, the adapter waits K * 512 bit times after a collision,
where K is drawn randomly. For K = 100,
The one bit time for 10 Mbps is 1/10000000 s = 0.0001 ms
The one bit time for 100 Mbps is 1/100000000 s = 0.00001 ms
Waiting time for a 10 Mbps broadcast channel is K*512*0.0001= 5.12 ms
Waiting time for a 100 Mbps broadcast channel is K*512*0.00001= 0.512 ms
<h3>
What is a collision in Ethernet?</h3>
A collision happens on a half-duplex Ethernet network when two devices on the same network attempt to communicate data at the exact same time. The two transmitted packets are "collapsed" by the network, which results in the network discarding both of them. On Ethernets, collisions are unavoidable.
<h3>
How collision is avoided in Ethernet?</h3>
A collision is a momentary interaction between two bodies or more than two bodies at once that modifies the motion of the bodies involved as a result of the internal forces at work. Collisions entail the application of force (there is a change in velocity).
Learn more about collision in Ethernet: brainly.com/question/14123270
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the answer is c you can eliminate a, b, d,
