A meteor starts burning when it enters Earth's atmosphere. Which of the following correctly explains this? [0.5 marks]

(a) Gravitational force produces heat.
(b) Frictional force produces heat.
(c) Magnetic force produces heat.
(d) Electrostatic force produces heat.

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Solution

Option (b) Frictional force produces heat.
(0.5 marks)

Friction can produce heat. This can be observed if you rub your palms against each other. Likewise, when a meteor enters Earth's atmosphere, the air applies a frictional force (air drag) against its motion. Due to this, heat is produced and the meteor starts burning.

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A meteor starts burning when it enters Earth's atmosphere. Which of the following correctly explains this?

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A meteor starts burning when it enters Earth's atmosphere. Which of the following correctly explains this? [0.5 marks] (a) Gravitational force produces heat. (b) Frictional force produces heat. (c) Magnetic force produces heat. (d) Electrostatic force produces heat.

A meteor starts burning when it enters Earth's atmosphere. Which of the following correctly explains this? [0.5 marks]

(a) Gravitational force produces heat.
(b) Frictional force produces heat.
(c) Magnetic force produces heat.
(d) Electrostatic force produces heat.