Håkan has bought new speakers that he will install in his living room, which is square with a side of 4.5 m (see figure). Håkan thinks that if he buys four speakers and puts one in each corner, he gets good sound everywhere in the living room.
To test his thinking, Håkan sets up the speakers and connects all four to his amplifier. He then sets a tone with the frequency 200 Hz that plays in phase. Then Håkan walks along one of the stretched lines in the figure.
a) How does the sound sound when Håkan is in the middle of the room?
b) How does the sound change when Håkan walks along one of the lines? Describe and motivate as detailed as possible!

heat the gas and measure the pressure

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!

96.77 amp

explanation:

rl = 250/100 = 2.5 ohms.

egl = 250 + (100 × 0.1) + 2 = 262 v.

at 700 r.p.m., eg2 = 262 × 700/1000 = 183.4 v.

if ia is the new current, then eg2 - 2 - (ia × 0.1) = 2.5 ia

which means this will give ia = 96.77 amp.