Answer:
Explanation:
A track 100m
The sprinter passes 12m mark in 1.8seconds
Let this be the initial point
d1 = 12m
t1 = 1.8seconds
And Passes the 56m mark in 6.7 seconds
Then, the second point is
d2 = 56m
t2 = 6.7 seconds
The sprinter velocity between this two position
Velocity is the rate of change of displacement
V = displacement / time taken
V = ∆x / ∆t
V = (x2 - x1) / (t2 - t1)
V = (56 - 12) / (6.7 - 1.8)
V = 44 / 4.9
V = 8.98 m/s
Then, the sprinter velocity between this two position is 8.98 m/s
Nonrenewable energy resources include coal, natural gas, oil, and nuclear energy. Once these resources are used up, they cannot be replaced, which is a major problem for humanity as we are currently dependent on them to supply most of our energy needs.
Answer:
475 N/C
Explanation:
As we know that, the electric field in parallel plate capacitor is same (constant) throughout. And is potential gradient.
So, Electric field is given by
Electric field = potential gradient
![Electric FIeld = \frac{Change\: in\: Potential}{Distance}](https://tex.z-dn.net/?f=Electric%20FIeld%20%3D%20%5Cfrac%7BChange%5C%3A%20in%5C%3A%20Potential%7D%7BDistance%7D)
Here, the potential change is 3.8V and the distance from negative plate to positive plate is 1.6 cm. The potential from negative plate to the center is (1.6/2)cm i.e., 0.8 cm.
But we have to take distance in SI units So, distance=![0.8 \times 10^{-2} m](https://tex.z-dn.net/?f=0.8%20%5Ctimes%2010%5E%7B-2%7D%20m)
So, Electric field is
![Electric\: field=\frac{3.8V}{0.8 \times 10^{-2}m }](https://tex.z-dn.net/?f=Electric%5C%3A%20field%3D%5Cfrac%7B3.8V%7D%7B0.8%20%5Ctimes%2010%5E%7B-2%7Dm%20%7D)
![Electric\: field=475 V/m](https://tex.z-dn.net/?f=Electric%5C%3A%20field%3D475%20V%2Fm)
So, electric field is 475 Volts per meter.
Note : Also we can say 475 Newtons per coulomb
The magnitude of force exerted on the woman by the floor when the lift is accelerating is 150 Newton.
<u>Given the following data:</u>
- Acceleration = 2.5
![m/s^2](https://tex.z-dn.net/?f=m%2Fs%5E2)
To calculate the force exerted on the woman by the floor when the lift is accelerating, we would apply Newton's Second Law of Motion:
<h3>
Newton's Second Law of
Motion.</h3>
Mathematically, Newton's Second Law of Motion is given by this formula;
![Force = mass \times acceleration](https://tex.z-dn.net/?f=Force%20%3D%20mass%20%5Ctimes%20acceleration)
Substituting the given parameters into the formula, we have;
![Force = 60 \times 2.5](https://tex.z-dn.net/?f=Force%20%3D%2060%20%5Ctimes%202.5)
Force = 150 Newton.
Read more on force here: brainly.com/question/1121817
It was stated on various researches that 2 percent of the planet's land area are occupied by the urban populations and about 75 percent of the earth's resources are consumed by them. Furthermore, these high-density human settlements also largely contributes to the pollution of the planet.