Answer:
there are 5 hydrogen atoms in that formula
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Answer:
The sound intensity is still the same. The sound intensity level does not depend on the number of sound sources but only the wave properties of the wave medium and the properties of the sound source. The wave properties of the medium includes the density and also the temperature.
Explanation:
Answer:
t = 025 s
Explanation:
We know
weight, W = 4 pounds
spring constant, k = 2 lb/ft
Positive damping, β = 1
Therefore mass, m = W / g
m = 4 / 32
= 1 / 8 slug
From Newtons 2nd law

where x(t) is the displacement from the mean or equilibrium position. The equation can be written as

Substituting the values, the DE becomes

Now the equation is

and on solving the roots are
=
= -4
Therefore the general solution is 
Now for initial condition x(0) = -1 ft
x'(0)= 8 ft/s
Now we can find the equation of motion becomes,

Therefore, the mass passes through the equilibrium when
x(t) = 0
= 0
-1+4t = 0
t = 
= 0.25 s