Physical properties can be used to describe matter. Some properties are dependent on the amount of matter present. All BUT ONE o
2 answers:
Answer: A) density.
Explanation:
a) Density is defined as the mass contained per unit volume.
Density is an intensive property as it does not depend on the amount of substance.
b) Volume of the gas is defined as the space occupied by a substance.
c) Mass is the amount of matter contained in a substance.
d) Weight of an object is the force acting on an object by virtue of its mass.
weight=
Volume, mass and weight are extensive properties as they all depend on the amount of substance present.
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Answer:
the electric field at Z = 12 cm is E = 9.68 × 10³ N/C = 9.68 kN/C
Explanation:
Given: radius of disk, R = 2.0 cm = 2 × 10⁻² cm, surface charge density,σ = 6.3 μC/m² = 6.3 × 10⁻⁶ C/m², distance on central axis, z = 12 cm = 12 × 10⁻² cm.
The electric field, E at a point on the central axis of a charged disk is given by E = σ/ε₀()
Substituting the values into the equation, it becomes
E = σ/ε₀() = 6.3 × 10⁻⁶/8.854 × 10⁻¹²(
) = 7.12 × 10⁵(
) = 7.12 × 10⁵(1 - 0.9864) = 7.12 × 10⁵ × 0.0136 = 0.0968 × 10⁵ = 9.68 × 10³ N/C = 9.68 kN/C
Therefore, the electric field at Z = 12 cm is E = 9.68 × 10³ N/C = 9.68 kN/C