20 g of ice is mixed with 80 g of water at 0°С. Find the final temperature of the nixture. (Take specific latent heat of ice as 336 Jg-1)
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Many machines- including inclined planes such as ramps- increase the strength of the force put into the machine but decrease the distance over which the force is applied. true or false

A20 cm long spring is attached to a wall. the spring stretches to a length of 22 cm when you pull on it with a force of 100 n. what is the spring constant

What is the single most important equation in all of physics?