Position is a relative measurement. If you want to know how far away in object is you need to know where you're measuring from. That is, distance always requires two points. Velocity is the time rate of change of position. If position is a relative measurement then so must be its rate of change. This means the statement I am moving is meaningless. It is not a meaningful thing to say that and object is moving without saying what it is moving with respect to. As an example imagine getting up and walking around on an airplane while it is in flight. you do not have to run 600 mph to get to the front of the plane you can simply walk around just like you're on the ground. That is because in your frame of reference the plane is not moving at all. It is the earth below that is moving. But the people on the ground think the plane is moving in the earth is at rest. Both people are correct because each observer has their own frame of reference. The only universally true statement is that there is relative motion between the plane and the ground. Every observer can agree on the fact but they will disagree on the speed of the earth and the plane. That is because motion is a relative measurement. In a similar way if someone asked how far away is Paris? Your answer would be different than mine because we live in two different locations. Neither of us are wrong but that is because Paris is not a definite distance away from every point in the universe. That is a commonsense thing for everyone, but for some reason it's easier to get mixed up about velocity. We get used to thinking that the earth is somehow stationary.
Answer:
Explanation:
According to Newton, whenever objects A and B interact with each other, they exert forces upon each other. When you sit in your chair, your body exerts a downward force on the chair and the chair exerts an upward force on your body. There are two forces resulting from this interaction - a force on the chair and a force on your body. These two forces are called action and reaction forces and are the subject of Newton's third law of motion. Formally stated, Newton's third law is: For every action, there is an equal and opposite reaction.
Answer:
(a) 21.44 ft/s
(b) 0 ft/s
(c) 19.51 ft/s
Explanation:
2 in = 2/12 ft = 0.167 ft
For steady laminar flow, the function of the fluid velocity in term of distance from center is modeled as the following equation:
where R = 0.167 ft is the pipe radius and is the constant fluid velocity at the center of the pipe.
We can integrate this over the cross-section area of the in order to find the volume flow
So the average velocity
b) At the wall of the pipe, r = R so
c) At a distance of 0.6 in = 0.6/12 = 0.05 ft
Since Alejandro hopes to combine the findings from the collected studies and draw a general conclusion regarding the subject, he is using statistical tool of inference.
There are basically 2 types of statistical tools:
- Descriptive statistical tools
- Inferential statistical tools
Descriptive tools are used to describe data. They include the use of tables, graphs, measures of dispersion, measures of central tendencies, etc.
Inferential tools are used to deduce conclusions from data. They include measures of significant differences, probability, correlation and regression, etc.
In this case, Alejandro would need to subject the data collected from the 35 studies to inferential statistical analysis tools in order to be able to make relevant conclusions.
More on types of statistics can be found here: brainly.com/question/13335435
Answer:
A) 1.5 V
B) 4.5 V
Explanation:
A) Batteries in parallel have the same voltage as an individual battery.
V = 1.5 V
B) Batteries in series have a voltage equal to the sum of the individual batteries.
V = 1.5 V + 1.5 V + 1.5 V
V = 4.5 V