By subtracting the value of absolute zero, also know as adding 273.15!
A, something to remember is that if the numbers are even the answer too will be even. Every time hope this helps :>
Answer:
B=1.04*10^{-4}T
Explanation:
An infinite wire produces a magnetic field that can be computed with the formula:

where m0 is the magnetic permeability of vacuum (4pi*10^{-7}Tm/A), I is the current of the wire (2.50A) and r is the perpendicular distance to the wire in which B is calculated (3cm=3*10^{-2}m). By replacing we obtain:

hope this helps!!
Answer:
I'm PRETTY SURE your answer is A
Explanation: