Matter is anything that has mass and takes up space. Substances are types of matter that are pure. Just remember that matter has mass and they both start with "m." Substances are <u>types of matter</u>. Cheers, mimiisawesome5
Answer:
1.31×10^-9 C
Explanation:
Total charge = volume density × volume of sphere
Volume density = 6.1×10^-4 C/m^3
Volume of sphere = 4π/3×(outer radius - inner radius)^3 = 4×3.142/3 × (4.5 - 3.7)^3 = 4.189×0.8^3 = 2.145 cm^3 = 2.145×10^-6 m^3
Total charge = 6.1×10^-4 × 2.145×10^-6 = 1.31×10^-9 C