What happens when the wire in an electromagnet is wrapped around a soft iron core?

a. the field is spread out

b. the field becomes weaker

c. the field is concentrated

d. nothing changes

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?

Miner's coal distributors does not mine coal itself, nor does it even store or handle the coal. instead, miner's solicits orders for low sulfur coal from other firms, then purchases the required amount from suppliers and directs them to ship the coal to its customers. what is miner's

Answer asap need by wednesday morning calculate the ph of 0.16m ch3cooh which has ka = 1.74 x 10-5 mol dm-3 best answer will be brainliest