<span>The speed of a wave, V, is f *lambda. Where f is the frequency and lambda is the distance. If a new crest reaches the end every 4 secs; it takes 8s to cover the distance. Hence, f, which is the number of oscillations covered is 8s. So we have V = 8 * 5 = 40 ms^1.</span>
Answer:
Population I stars are usually the blue younger stars. They orbit in the disk and they are relatively rich in metals. Population II stars are the red, older stars that lies in the bulge and halo of the Galaxy. They orbits in the elliptical orbits in the halo.
Population I stars include the sun and tend to be luminous, hot and young, concentrated in the disks of spiral galaxies. They are particularly found in the spiral arms. while, Population II stars tend to be found in globular clusters and the nucleus of a galaxy. They tend to be older, less luminous and cooler than Population I stars. They have fewer heavy elements.
Answer
given,
Power of sound P = 35 W
Distance between micro phone and speaker = 50 m
small microphone Area = 1 cm²
a) intensity of sound at micro phone is
I = 1.11 mW/m²
b) sound intensity level at the position of micro phone is
<span>its own connection to the voltage source</span>
Personal income, sales, and payroll. it’s not education because that itself is payed for by taxes.
