Answer:
The pressure exerted by the girl is 245,000 N/m²
Explanation:
Given;
mass of the girl, m = 50 kg
area of the girl's shoe, A = 0.002 m²
The pressure exerted by the girl is calculated as follows;
![P = \frac{F}{A} \\\\Where;\\F \ is \ the \ force \ exerted \ by \ girl's \ weight\\\\P = \frac{F}{A} = \frac{mg}{A} = \frac{50 \times 9.8}{0.002} = 245,000 \ N/m^2](https://tex.z-dn.net/?f=P%20%3D%20%5Cfrac%7BF%7D%7BA%7D%20%5C%5C%5C%5CWhere%3B%5C%5CF%20%5C%20is%20%5C%20the%20%5C%20force%20%5C%20exerted%20%5C%20by%20%5C%20girl%27s%20%5C%20weight%5C%5C%5C%5CP%20%3D%20%5Cfrac%7BF%7D%7BA%7D%20%3D%20%5Cfrac%7Bmg%7D%7BA%7D%20%3D%20%5Cfrac%7B50%20%5Ctimes%209.8%7D%7B0.002%7D%20%3D%20245%2C000%20%5C%20N%2Fm%5E2)
Therefore, the pressure exerted by the girl is 245,000 N/m²
Answer:
0.002T
Explanation:
It is given that,
Distance between two parallel wires, d = 5 mm = 0.005
Current in each wire, I = 60 A
Let B is the magnitude of the magnetic field at a point that is between the two wires and 2.0 mm from one of the two wires.
calculating the magnetic field due to first wire is given by :
![B_1=\dfrac{\mu_oI}{2\pi d}B_1=\dfrac{4\pi \times 10^{-7}\times 60}{2\pi \times 0.002} B_1=0.006\ T](https://tex.z-dn.net/?f=B_1%3D%5Cdfrac%7B%5Cmu_oI%7D%7B2%5Cpi%20d%7DB_1%3D%5Cdfrac%7B4%5Cpi%20%5Ctimes%2010%5E%7B-7%7D%5Ctimes%2060%7D%7B2%5Cpi%20%5Ctimes%200.002%7D%20%20B_1%3D0.006%5C%20T)
The magnetic field due to second wire is given by :
![B_2=\dfrac{\mu_oI}{2\pi d}\\B_2=\dfrac{4\pi \times 10^{-7}\times 60}{2\pi \times 0.003} \\B_2=0.004\ T](https://tex.z-dn.net/?f=B_2%3D%5Cdfrac%7B%5Cmu_oI%7D%7B2%5Cpi%20d%7D%5C%5CB_2%3D%5Cdfrac%7B4%5Cpi%20%5Ctimes%2010%5E%7B-7%7D%5Ctimes%2060%7D%7B2%5Cpi%20%5Ctimes%200.003%7D%20%20%5C%5CB_2%3D0.004%5C%20T)
Let B is the net magnetic field from wire A, so,
![,B=B_1-B_2B=0.006-0.004B = 0.002 T](https://tex.z-dn.net/?f=%2CB%3DB_1-B_2B%3D0.006-0.004B%20%3D%200.002%20T)
Answer: A
Explanation: the tilted axis’s allows the sun to hit areas with different amount of radiation therefore leading to seasons
Wood, marble, clay, terracotta and even concrete all come in colors and can be classified as natural materials.