Answer:
The spring constant is 215.6 N/m.
Explanation:
Given that,
Distance = 39 cm
Compresses length = 29 cm
Mass = 2.2 kg
We need to calculate the distance
Using formula of distance

Put the value into the formula
We need to calculate the spring constant
Using formula of restoring force


Where, F = force
x = distance
Put the value into the formula


Hence, The spring constant is 215.6 N/m.
Answer:
8in
Explanation:
Multiply the race way side by 6
6 rather than 8.
#1
For closed pipe the fundamental frequency will be given as




#2
For open pipe the wavelength for Nth harmonic will be given as


#3
for a closed pipe the frequency is given as

here for third harmonic n = 3

now plug in all values



#10
since in the given figure there are three complete loops
so in this case the <em>number of harmonics are THREE</em>
Answer:
2.83m
Explanation:
The information that we have is
Intensity at 2.0 m:
and 
we need an intensity level of: 
thus, we are looking for the distance
.
which we can find with the law for intensity and distance:

we solve for
:

and we substitute the known values:

at a distance of 2.83m the intensity level is 40dB
Answer:
λ = 6.61 x 10⁻⁷ m = 661 nm
Explanation:
From the Young's Double Slit experiment, the the spacing between adjacent bright or dark fringes is given by the following formula:
Δx = λL/d
where,
Δx = fringe spacing = 2.86 mm = 2.86 x ⁻³ m
L = Distance between slits and screen = 2.12 m
d = slit separation = 0.49 mm = 0.49 x 10⁻³ m
λ = wavelength of light = ?
Therefore,
2.86 x 10⁻³ m = λ(2.12 m)/(0.49 x 10⁻³ m)
(2.86 x 10⁻³ m)(0.49 x 10⁻³ m)/(2.12 m) = λ
<u>λ = 6.61 x 10⁻⁷ m = 661 nm</u>