Sound Intensity The relationship between the number of decibels β and the intensity of a sound I (in watts per square meter) is β = 10 log I 10 − 12 . a Determine the number of decibels of a sound with an intensity of 1 watt per square meter. b Determine the number of decibels of a sound with an intensity of 10 − 2 watt per square meter. c The intensity of the sound in part a is 100 times as great as that in part b . Is the number of decibels 100 times as great? Explain.
Sound Intensity The relationship between the number of decibels β and the intensity of a sound I (in watts per square meter) is β = 10 log I 10 − 12 . a Determine the number of decibels of a sound with an intensity of 1 watt per square meter. b Determine the number of decibels of a sound with an intensity of 10 − 2 watt per square meter. c The intensity of the sound in part a is 100 times as great as that in part b . Is the number of decibels 100 times as great? Explain.
Solution Summary: The author calculates the number of decibels of sound with an intensity of 1 watt per square meter.
Listen
A falling object travels a distance given by the formula d = 6t + 9t2 where d is in feet
and t is the time in seconds. How many seconds will it take for the object to travel
112 feet? Round answer to 2 decimal places. (Write the number, not the units).
Your Answer:
Solve by the quadratic formula or completing the square to obtain exact solutions.
2
e
104
OA) -16±3√6
B) 8±√10
O c) -8±√10
OD) 8±3√√6
U
Question 14 (1 point)
Listen
The frame on a picture is 18 in by 22 in outside and is of uniform width. Using
algebraic methods, what is the width of the frame if the inner area of the picture
shown is 250 in²2? Write answer to 2 decimal places. (Write the number with no
units).
18 in
Your Answer:
22 in
Chapter 5 Solutions
Bundle: College Algebra, Loose-leaf Version, 10th + WebAssign Printed Access Card for Larson's College Algebra, 10th Edition, Single-Term
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, algebra and related others by exploring similar questions and additional content below.
Compound Interest Formula Explained, Investment, Monthly & Continuously, Word Problems, Algebra; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=P182Abv3fOk;License: Standard YouTube License, CC-BY
Applications of Algebra (Digit, Age, Work, Clock, Mixture and Rate Problems); Author: EngineerProf PH;https://www.youtube.com/watch?v=Y8aJ_wYCS2g;License: Standard YouTube License, CC-BY