Physics
When all the forces and torques are balanced in a mechanical body it is said to be in

Buoyancy
Equilibrium
Static
None of these

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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 prevent the steam pressure from bursting open the pouch
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 allow the aroma of the food to come out through the holes

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Physics
Which of the following options correctly explains the term heat budget?

It is a mode of transfer of heat through matter by molecular activity.
It is the amount of heat which the surface of earth receives from the sun.
It is the radiation from the earth in the form of long waves.
It is the balance between incoming and outgoing radiation

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