Answer:
Explanation:
Given
When mass is attached to the spring its frequency is
when another mass is attached to
, frequency changes to
frequency of spring mass system is given by
for
for and
divide 1 and 2
squaring
A bicycle gear wheel is a disc with 50 ‘teeth' equally spaced around its edge, as shown. The gear wheel is rotated 10 times each
1 answer:
Answer:
<h2>0.66m</h2>Explanation:
<em>The question is not complete, here is the complete question, also see attached the image.</em>
<em>"A bicycle gear wheel is a disc with 50 ‘teeth’ equally spaced around its edge, as shown. The gear wheel is rotated 10 times each second. A springy strip of metal is vibrated by the rotating ‘teeth’. The metal strip produces a sound of frequency that is equal to the frequency of vibration of the strip. The speed of sound in air is 330ms–1. What is the wavelength of the emitted sound?"</em>
given data
number of teeth= 50
we are told that the gear is rotated 10 times in 1 sec,
hence the frequency of the rotation past the strip is
=50*10
=500Hz
speed of sound= 330m/s
we know that
-----------1
where Vw is the speed of sound,
f is its frequency, and
λ is its wavelength.
λ=Vw/f
λ=330/500
λ=0.66m
You might be interested in
Answer:
The total charge on the sphere is 46.11 x 10⁻³ C
Explanation:
Given:
charge density of innermost section, σ = −5.0C/m³
radius of the innermost section, r = 6.0cm
charge density of the outer layer ,σ = +8.0 C/m³
radius of the outer layer, r =12.0cm
volume of sphere is given as
Charge enclosed by the innermost section = volume x charge density
volume
Enclosed charge, q₁ = −5.0C/m³ X 9.05 x 10⁻⁴ m³
= - 4.53 x 10⁻³ C
Charge at the outer surface
Volume =
Enclosed charge, q₂ = +8.0 C/m³ X 0.00633 m³
= 50.64 x 10⁻³ C
Total charge on the sphere; Q = q₁ + q₂
= - 4.53 x 10⁻³ C + 50.64 x 10⁻³ C
= 46.11 x 10⁻³ C
Therefore, the total charge on the sphere is 46.11 x 10⁻³ C