welcome back to war. Wednesday, 21.30 pm! Magnetic door alarm!
Curie Point- When a piece of iron gets too hot, it loses its attraction to a magnet.
Curie Point- When a piece of iron gets too hot, it loses its attraction to a magnet.
E = 0.002 × (3 × 10⁸)² = 1.8 × 10¹⁴ joules 130 TW = 1.3 × 10¹⁴ W → 1.3 × 10¹⁴ J/s m = E / c² = 1.3 × 10¹⁴ / (9 × 10¹⁶) ≈ 0.00144 kg