<span>When a magnet moves near a wire, it's changing field causes the electrons in the wire to flow as electric current.</span>
Answer:
10500 J/kg/*C
Explanation:
Quantity of heat required=mass of substance x specific heat capacity x change in temperature
Quantity of heat required=0.25 x 4200 x [30-20]
Quantity of heat required=0.25 x 4200 x 10
Quantity of heat required=10500 J/kg/*C
Positive. The 1st object loses electrons and will thus have an imbalance of charge with loss of electrons.
Answer:
55 ohms
Explanation:
if it was series circuit, then you just need to add all the resistances
