The catalyst lowers the activation energy.
The answer would be intoduction hope this really helped
Answer:
The average field strength is 1.8T
Explanation:
The magnitude of the wire whose length is L carrying a current I and making an angle θ with a magnetic field of density B is calculated using the following formula.
B = F/(I * L * Sin(θ)
Given that F = 2.16N
I = 30 A
L = 4cm = 4 * 10^-2m
θ = π/2
By substitution
B = 2.16/(30 * 4 * 10^-2 * Sin(π/2))
B = 1.8T
Hence, the average field strength is 1.8T
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❖ The correct answer choice is A. A chemical change has occurred because new compounds have been produced.
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