Choose the sequence of energy forms that best fits each item.

Items:
1. Hairdryer
2. Electric saw
3. Toaster
4. Shredder
5. Coffee Pot
6. Windmill
7. IPod
8. Speaker Vibrates

Options:
a.chemical energy-electrical energy-mechanical energy
b.electrical energy-thermal energy
c.electrical energy-mechanical energy
d.mechanical energy-electrical energy

6.29 μC/m³

Explanation:

Volume charge density is the quantity of charge per unit volume.

The direction of the electric field was not specified, therefore the volume charge density (ρ) is given by:

2πRLE = ρπR²L/ε₀

ρ = 2Eε₀ / R

Where E = electric field strength = 16 kN/C = 16 * 10³ N/C, R = radius of rod = 4.5 cm = 0.045 m, ε₀ = relative permittivity of free space = 8.85 * 10⁻¹² C² / Nm²

Therefore:

ρ = 2(16 * 10³ N/C)(8.85 * 10⁻¹² C²/Nm²) / 0.045 m = 6.29 * 10⁻⁶ C/m³

ρ = 6.29 μC/m³