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1. The volume of an ice cube is shrinking at the rate of 0.9 cm³/min. At what rate is the side length changing when the side lengths are 3 cm?

1. The volume of an ice cube is shrinking at the rate of 0.9 cm³/min. At what rate is the side length changing when the side lengths are 3 cm?

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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1. The volume of an ice cube is shrinking at the rate of 0.9 cm³/min. At what rate is the side length changing when the side lengths are 3 cm? 2. A roast is removed from an oven at 220°C and left to cool at room temperature, which is 20°C. Its temperature is T (t) = 20- Be-kt. Find the parameters B and k if after 30 min the temperature of the roast is 120°C. When will it be 60°C? 3 A 16-meter tall woman is walking at 2m/s toward street light which is located at & m above the ground Find
Transcribed Image Text:1. The volume of an ice cube is shrinking at the rate of 0.9 cm³/min. At what rate is the side length changing when the side lengths are 3 cm? 2. A roast is removed from an oven at 220°C and left to cool at room temperature, which is 20°C. Its temperature is T (t) = 20- Be-kt. Find the parameters B and k if after 30 min the temperature of the roast is 120°C. When will it be 60°C? 3 A 16-meter tall woman is walking at 2m/s toward street light which is located at & m above the ground Find
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