Answer:
its electrons
Explanation:
only electrons stays outside the nucleus unlike protons and neutrons and it has little to no mass
A compound machine is one that consists of a couple simple machines working together, like a wheelbarrow contains the lever, axle, and wheel. While a simple machine would just be those individually, or anything else that can be used for applying a force.<span />
Density can be any number, as long as it has the right units.
A unit of density has to be (a unit of mass) divided by (a unit of volume).
The most common one is gram/cm^3.
Answer:
![B_{net} = \frac{2\sqrt2 \mu_0 i}{\pi d}](https://tex.z-dn.net/?f=B_%7Bnet%7D%20%3D%20%5Cfrac%7B2%5Csqrt2%20%5Cmu_0%20i%7D%7B%5Cpi%20d%7D)
Explanation:
Magnetic field due to straight current carrying wire is given by the formula
![B = \frac{\mu_0 i}{4\pi r}(sin\theta_1 + sin\theta_2)](https://tex.z-dn.net/?f=B%20%3D%20%5Cfrac%7B%5Cmu_0%20i%7D%7B4%5Cpi%20r%7D%28sin%5Ctheta_1%20%2B%20sin%5Ctheta_2%29)
now we will have for one side of the square at its center position given as
![B = \frac{\mu_0 i}{4\pi (\frac{d}{2})}(sin45 + sin45)](https://tex.z-dn.net/?f=B%20%3D%20%5Cfrac%7B%5Cmu_0%20i%7D%7B4%5Cpi%20%28%5Cfrac%7Bd%7D%7B2%7D%29%7D%28sin45%20%2B%20sin45%29)
![B = \frac{2\sqrt2 \mu_0 i}{4 \pi d}](https://tex.z-dn.net/?f=B%20%3D%20%5Cfrac%7B2%5Csqrt2%20%5Cmu_0%20i%7D%7B4%20%5Cpi%20d%7D)
now for the we have for complete square loop it will become 4 times of the one side
![B_{net} = 4 B](https://tex.z-dn.net/?f=B_%7Bnet%7D%20%3D%204%20B)
![B_{net} = 4 \frac{2\sqrt2 \mu_0 i}{4 \pi d}](https://tex.z-dn.net/?f=B_%7Bnet%7D%20%3D%204%20%5Cfrac%7B2%5Csqrt2%20%5Cmu_0%20i%7D%7B4%20%5Cpi%20d%7D)
![B_{net} = \frac{2\sqrt2 \mu_0 i}{\pi d}](https://tex.z-dn.net/?f=B_%7Bnet%7D%20%3D%20%5Cfrac%7B2%5Csqrt2%20%5Cmu_0%20i%7D%7B%5Cpi%20d%7D)