Step-by-step explanation:
a power supply, a load suited to the power supply, and wiring as a conductor
For this case we have the following equation:

Where,
w: The weight of a spring in pounds
E: the energy stored by the spring in joules.
Substituting values we have:

Making the corresponding calculation:
Answer:
the approximate weight of the spring in pounds is:
Answer:
Step-by-step explanation:
We know sum of the interior angles of a quadrilateral is 
therefore we can write

so



So smallest interior angle is 
Largest interior angle 
Answer:
C.
Step-by-step explanation:
In each quantity of 87 cg, 1 of them is active ingredient. In the quantity of interest,
... (1/87)·522 cg = 6 cg . . . is active ingredient
The remainder of that quantity, 516 cg, is inactive ingredient.