Match the following.
1. an object's natural frequency of vibration determined by the physical qualities and dimensions of the object
2. a series of alternating reinforcements and cancellations produced by the interference of waves of different frequencies
3. a harmonious sound created by the interference of waves
4. the characteristics by which the ear distinguishes between sounds with the same frequency and amplitude
5. a discordant sound created by the interference of waves
6. the tendency of an object to vibrate at a maximum amplitude at specific frequencies resonance
7. multiples of the fundamental frequency that are produced by a musical instrument
a. beats
b. consonance
c. dissonance
d. harmonics
e. resonance
f. frequency
g. timbre

trig 15.3 cos

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west

as we probably am aware that our atmosphere or air have various levels, each level has different gasses, and each gas has another porousness. at the point when the light originates from lower porousness to higher penetrability, it alters its course. with the goal that implies that when the light originates from the moon to the earth, it alters it's course a lot more occasions. it essentially implies that the state of the light piece of the moon is changed on the earth.

not copied too! hope this !

joke:

h o h o hope you have a merry christmas!