![F_B = ILBsin \theta](https://tex.z-dn.net/?f=F_B%20%3D%20ILBsin%20%5Ctheta)
F force
I current
L length of wire in magnetic field
B magnetic field strength
θ angle between wire and magnetic field
if θ = 90°
Answer:
• 36.4 kg of coal.
• 80 pounds of coal.
Explanation:
Using proportionality constant,
Mass of coal = 1,000,000/27,500,000 btus/metric ton
= 0.0364 metric tons of coal
Mass of coal = 1,000,000/25,000,000 btus/ton
= 0.04 tons of coal.
Converting metric tons to kilogram,
1 metric ton = 1000kg,
0.0364 metric ton;
= 36.4 kg of coal.
Converting tons to pounds,
1 ton = 2000 pounds,
0.04 metric ton;
= 80 pounds of coal.
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Hope this helps!
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