Find the surface area of the cylinder in terms of pi. Height = 8 in Diameter = 4in
1 answer:
You might be interested in
Answer:
Work done in stretching the spring = 7.56 lb-ft.
Step-by-step explanation:
Normal length of the spring = 8 in or ft
= ft
If the spring has been stretched to 11 inch then the stretched length of the spring is = 11 in
= ft
Force applied to stretch the spring = 12 lb
By Hook's law,
F = kx [where k is the spring constant and x = length by which the spring is stretched]
12 = k()
k = 18
Work done (W) to stretch the spring by ft will be
W =
=
=
= 9()²
= 7.56 lb-ft
Answer: A
Step-by-step explanation:
--> Exponent rule for division, 10^8/10^2 = 10^6
= 700,000 --> In scientific notation, 7.0×10^5