Question

define voltmater
define radiation
define polythene
define sound wave define
what is atomic number
what is ray
what is combustion​

Answer 1

Explanation:

1. an instrument for measuring electric potential in volts.
2. the emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles which cause ionization.
3. a tough, light flexible synthetic resin made by polymerizing ethylene, chiefly used for plastic bags, food containers, and other packaging.
4. a wave of compression and rarefaction, by which sound is propagated in an elastic medium such as air.
5. the number of protons in the nucleus of an atom, which is characteristic of a chemical element and determines its place in the periodic table.
6. each of the lines in which light (and heat) may seem to stream from the sun or any luminous body, or pass through a small opening.
7. the process of burning something

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Answer 2

Explanation:

• an instrument for measuring electric potential in volts.
• the emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles which cause ionization.
• a tough, light flexible synthetic resin made by polymerizing ethylene, chiefly used for plastic bags, food containers, and other packaging
• wave of compression and rarefaction, by which sound is propagated in an elastic medium such as air.
• relating to an atom or atoms.
• each of the lines in which light (and heat) may seem to stream from the sun or any luminous body, or pass through a small opening.
• the process of burning something

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