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1a. State three:
(i) Assumptions of Kinetic Molecular Theory
(ii) Particles that make up the atom

1b. Mention the device used for distinguishing conductors and insulators.

1c. A block of mass 30g has dimensions of 2cm by 3cm by 4cm. Determine its density.

2a. (i) Explain energy.
(ii) State three renewable sources of energy.

2b. Compute the power output in kilowatts of a machine that lifts a 500kg crate through a height of 20m in 60 seconds.

Sagot :

GinnyAnswer

Final answer:

The detailed answer covers the kinetic molecular theory of gases, the relationship between temperature and molecular speeds, energy concepts, and renewable energy sources.


Explanation:

States of Matter and the Kinetic Molecular Theory

  1. Postulates of the Kinetic Molecular Theory of Gases:
    1. Gas consists of particles in constant, random motion.
    2. The volume of gas particles is negligible compared to the volume of the container.
    3. No forces of attraction exist between gas particles.
  2. Maxwell and Maxwell-Boltzmann Distributions: These distributions describe how temperature affects the distribution of molecular speeds, showing that higher temperatures lead to a wider range of molecular speeds.

Energy and Renewable Sources

  1. Energy: Energy is the ability to do work or produce heat. It exists in various forms such as kinetic, potential, and thermal energy.
  2. Renewable Sources of Energy: Three examples include solar power, wind power, and hydropower, which rely on replenishable natural resources.

Learn more about Kinetic Molecular Theory of Gases here:

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