Physics
What is the full form of ''AM' regarding radio broadcasting?

Anywhere Movement
Amplitude Matching
Amplitude Movement
Amplitude Modulation

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Physics
In heating frozen foods in sealed pouches in a microwaves, why do you first poke holes in the pouch?

To allow the aroma of the food to come out through the holes
To allow the microwaves to get into the food through the holes
To allow the heat to get into the food through the hole
To prevent the steam pressure from bursting open the pouch

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