## THIS USER ASKED 👇

**At the metal-casting company where you work, you must set up a conveyor system to move castings from the furnace to the heat treatment area 55 yards away. the castings cool at the rate of 0.3°f (degrees fahrenheit) per second and must not be allowed to cool more than 7°f before being heat treated. what is the minimum speed, in feet per second, that the conveyor must move?**

## THIS IS THE BEST ANSWER 👇

2.35 yards / second or 7.07 tr / sec

Step by step explanation:

The length to be covered is 55 yards.

The casting cools at a rate and the temperature cannot be allowed to cool more than .

We know that,

By the time the temperature reaches , it will take around,

, so it will take about 23.33 seconds.

Also, 55 yards =

So the minimum speed at which the carrier must move,

Hence, the speed of transport is 7.07 feet per second.