To convert between mass<span> and </span>number of moles, you can use themolar mass<span> of the substance. Then, you can use Avogadro's</span>number<span> to convert the </span>number of moles<span> to </span>number<span> of atoms.</span>
Answer:
18.6012339739 A
Explanation:
= Vacuum permeability = ![4\pi \times 10^{-7}\ H/m](https://tex.z-dn.net/?f=4%5Cpi%20%5Ctimes%2010%5E%7B-7%7D%5C%20H%2Fm)
L = Length of wire = 55 cm
N = Number of turns = 4000
I = Current
Magnetic field is given by
![B=\dfrac{\mu_0NI}{L}\\\Rightarrow I=\dfrac{BL}{\mu_0N}\\\Rightarrow I=\dfrac{0.17\times 0.55}{4\pi \times 10^{-7}\times 4000}\\\Rightarrow I=18.6012339739\ A](https://tex.z-dn.net/?f=B%3D%5Cdfrac%7B%5Cmu_0NI%7D%7BL%7D%5C%5C%5CRightarrow%20I%3D%5Cdfrac%7BBL%7D%7B%5Cmu_0N%7D%5C%5C%5CRightarrow%20I%3D%5Cdfrac%7B0.17%5Ctimes%200.55%7D%7B4%5Cpi%20%5Ctimes%2010%5E%7B-7%7D%5Ctimes%204000%7D%5C%5C%5CRightarrow%20I%3D18.6012339739%5C%20A)
The current necessary to produce this field is 18.6012339739 A
Smaller thasn the object and inverted
Answer: 0.2N
Explanation:
mass of wagon = 100 grams
Convert mass in grams to kilograms
If 1000 grams = 1kg
100 grams = (100/1000) = 0.1kg
Acceleration of wagon = 2m/s/s
Force on the wagon = ?
Recall that Force is the product of mass of an object by the acceleration by which it moves.
i.e Force = mass x acceleration
Force = 0.1kg x 2m/s/s
Force = 0.2N
Thus, the force on the wagon is 0.2Newton