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A-Level Question Confusion!

Hey!

I'm having a hard time understanding why these two questions have these answers.

First question deals with pV=nRT so I don't get why pV wouldn't be constant.Second question, I don't get why transverse waves only occur in solids.


1) Consider an isobaric process in ideal gas. Identify the incorrect equation:

- p = const.

- V⁄T = const.

- V1/T1 = V2/T2

- pV = const. (correct)


2) The transverse mechanical wave motion can occur

- only in gases

- only in liquids

- only in solids (correct)

- in gases and liquids


Any help would be appreciated!
Original post by BristolFresher15
Hey!

I'm having a hard time understanding why these two questions have these answers.

First question deals with pV=nRT so I don't get why pV wouldn't be constant.Second question, I don't get why transverse waves only occur in solids.


1) Consider an isobaric process in ideal gas. Identify the incorrect equation:

- p = const.

- V⁄T = const.

- V1/T1 = V2/T2

- pV = const. (correct)




2) The transverse mechanical wave motion can occur

- only in gases

- only in liquids

- only in solids (correct)

- in gases and liquids




Any help would be appreciated!



First question deals with pV=nRT so I don't get why pV wouldn't be constant.

Explanation: In order for pV to be constant, the number of mole and temperature of the ideal gas needs to be constant. The condition of pV = constant is usually for isothermal process.


Second question, I don't get why transverse waves only occur in solids.

Explanation : Transverse mechanical wave motion needs a restoring force in response to the disturbance in the medium. Solids can have such restoring force.
Original post by Eimmanuel
First question deals with pV=nRT so I don't get why pV wouldn't be constant.

Explanation: In order for pV to be constant, the number of mole and temperature of the ideal gas needs to be constant. The condition of pV = constant is usually for isothermal process.


Second question, I don't get why transverse waves only occur in solids.

Explanation : Transverse mechanical wave motion needs a restoring force in response to the disturbance in the medium. Solids can have such restoring force.


Thank you!

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