Answer:
the minimum speed, in feet per second, that the conveyor must move is 7.07143 ft/sec
Step-by-step explanation:
Let's assume time it takes to cool is 't' seconds
so, we are given
The castings cool at the rate of 0.3°F (degrees Fahrenheit) per second
so, total change in temperature will be
must not be allowed to cool more than 7°F before being heat treated
so, that temperature must be equal to 7
now, we can solve for t
sec
now, we are given length of casting is 55 yards
so, firstly we will change it into ft
1 yard =3 ft
so,
so, we have
total length =55 ft
now, we can use speed formula
we can plug values
so, speed is 7.07143 ft/sec
Answer:
7.07 is the answer i got as well
Step-by-step explanation:
B. The slope is 2. This means that the pig gains on average 2 kilograms per year for the first 4 years of its life.
C. The slope is 14. This means that the pig gains on average 14 kilograms per year for the first 4 years of its life.
D. The slope is 2. This means that the pig gains a total of 2 kilograms in the first 4 years of its life.
b. 5:3
c. 5:7
d. 5:2
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