Question 15
VariationU is inversely proportional to the cube of V and U = 81 when V = 2. Find U when V = 3.
- A.24
- B.27
- C.32
- D.36
Show the answer and explanation
Answer: A (24)
Explanation
U = k/V3: k = 81 × 8 = 648. When V = 3, U = 648/27 = 24.
U is inversely proportional to the cube of V and U = 81 when V = 2. Find U when V = 3.
Answer: A (24)
U = k/V3: k = 81 × 8 = 648. When V = 3, U = 648/27 = 24.