Expert Physics Tutoring

MS1:

- Correct definition: The build-up of electric charge on an object (1)

MS2:

- Describes the process of electron transfer (1)

- Explains how the neutrally charged object becomes positively charged and is attracted to the negative charge (1)

MS3:

- Identifies correct equation: F = k * Q1 * Q2 / r^2 (1)

- Substitutes values correctly: 9 × 10^9 × 2 × 10^-6 × 4 × 10^-6 / (0.1)^2 (1)

- Final answer: 1.44 × 10^-2 N OR 144 μN (1)

MS4:

- Correct statement: The total electric charge in an isolated system remains constant (2)

MS5:

- Describes the process of charge separation (1)

- Explains how the conveyor belt transfers positive charges to the dome and negative charges to the sphere (1)

MS6:

- Identifies correct equation: C = ε * A / d (1)

- Substitutes values correctly: 8.85 × 10^-12 × 50 × 10^-4 / 2 × 10^-3 (1)

- Final answer: 2.21 × 10^-9 F OR 2.21nF (1)

MS7:

- Correct answer: Metal (1)

MS8:

- Describes the formation of a conductive layer around the device (1)

- Explains how the conductive layer prevents external electric fields from entering the device (1)

MS9:

- Identifies correct equation: E = k * Q / r^2 (1)

- Substitutes values correctly: 9 × 10^9 × 10 × 10^-6 / (5 × 10^-3)^2 (1)

- Final answer: 3.6 × 10^6 V/m OR 3.6MV/m (1)

MS10:

- Correct answer: Photocopying, electrostatic spray painting, dust collection, or any other relevant application (2)