Answer:
(a) The current should be in opposite direction
(b) The current needed is 39.8 A
Explanation:
Part (a)
Based, on right hand rule, the current should be in opposite direction
Part (b)
given;
strength of magnetic field, B = 370 µT
distance between the two parallel wires, d = 8.6 cm

At the center, the magnetic field strength is twice

R = d/2 = 8.6/2 = 4.3 cm = 0.043 m

Therefore, current needed is 39.8 A
The answer is A
Explanation: the conservation of matter means that the mass stays the same
It depends on the car and the home and what it is producing but most commonly it would be cars producing more carbon dioxide.
Isn’t it a light box , mirror and / or angle measurer?
Answer:
I think it will back towards the earth because earth gravitional field will attract to Wards