Abrass ring of diameter 10.00 cm at 20.7°c is heated and slipped over an aluminum rod of diameter 10.01 cm at 20.7°c. assume the average coefficients of linear expansion are constant. (a) to what temperature must the combination be cooled to separate the two metals

Explanation:

Given:

We have:

(a)

Initial circumference of the brass ring:

Initial circumference of the aluminium rod:

According to condition:

The final circumference of the two must be at least equal to separate them.

Now, the final temperature:

is the temperature to which the combination must be cooled to separate the two metals.

the focus of lesson 1 is newton's first law of motion - sometimes referred to as the law of inertia. newton's first law of motion is often stated as. an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

explanation:

area of focus