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At a distance of 19 m from a sound source the intensity level is 98 dB. What is the intensity level (in dB) at a point 3.7 m from the source? Assume that the source radiates equally in all directions.
Please read the article described in the following link http://jwilson.coe.uga.edu/EMT668/EMAT6680.2001/Abney/WriteUp12/writeup12.html • Make a scatter plot of the data using EXCEL or another program of your choice.
A roller coaster at an amusement park has a dip that bottoms out in a vertical circle of radius r. find how fast is the roller coaster traveling at the bottom of the dip
A distortion-less line operating at 120 MHz has and Determine How far will a voltage wave travel before it is reduced to 20% of its initial magnitude?
A spaceship approaches the earth with a speed 0.50c. A passenger in the spaceship measures his heartbeat as 70 beats per minute. Determine what is his heartbeat rate
Discussed factors related to the quality of family relationships and how they relate to delinquency, especially child parent attachment, family conflict, and child abuse 2. Identify and describe the major parenting styles as well as steps that parent..
Three identical boxcars are coupled together and are moving at a constant speed of 28.0 on a level, frictionless track. What is the speed of the four cars
hysicists model a magnetic field by assigning to every point in space a vector that represents the strength and direction of the field at that point. Two magnetic fields that exist in the same region of space may be added as vectors at each point to ..
For red light (lamda = 0.64um), ni in pure water is approx 1.3 x 10^-8; for blue light (lamda = 0.48um), ni is approx 1.0x10^-9. The deep end of a typical home swimming pool is approx 2.5m deep.
Julie has a mass 49kg What is her potential energy when standy on the 6m diving board? what is her kinetic energy just before she hits the water
A Calcium surface (work function = 2.87 eV) is illuminated with 200 nm light from a 2 mW laser. How many photons per second are emitted by the laser?
a moth at about eye level is 12 cm in front of a plane mirror you are behind the moth 34 cm from the mirror. what is
Two adjacent sources each emit a frequency of 800Hz in air where the velocity of sound is 340 m/s. How much farther back would source 1 have to be moved as a result an observer in front of the sources would hear no sound.
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