Answer:
Explanation:
First of all, well calculate the spring constant k
K = 2Ei/x^2
Where Ei = initial work required
x = initial stretch length
k = 2×7/0.017^2 = 48443J/m^2
Now work done in stretching it to 5.3cm (1.7 + 3.6) or 0.053m
EF = kx^2/2
48443 × 0.053^2/2 = 68J
Work done in stretching additional 3.6cm is equal to
68J-7J = 61J
Answer:
f = 3.102 Hz
Explanation:
In this case you have that the required voltage is the maximum induced emf produced by the rotating generator.
In order to calculate the frequency of rotation of the generator that allows one to obtain 12.0V you use the following formula:
(1)
N: turns of the armature = 95
B: magnitude of the magnetic field = 0.800T
A: area of the square armature = (9.0cm)^2 = (0.09m)^2 = 8.1*10^-3 m^2
emf_max = 12.0V
w: angular frequency
you solve the equation (1) for w:
Then, the frequency is:
Answer:
-0.9 m/s²
Explanation:
Given:
Δx = 500 m
v₀ = 50 m/s
v = 40 m/s
Find: a
v² = v₀² + 2aΔx
(40 m/s)² = (50 m/s)² + 2a (500 m)
a = -0.9 m/s²
The power ratio of a washing machine at 80 decibels is 10⁸ or 100,000,000.
<h3>What is the power ratio of a sound of 80 decibels?</h3>
Sound is a form of disturbance created by the vibrations of the medium and which travels across the medium in wave form.
A measure of sound intensity is decibels.
Decibels are a measure of sound on a logarithmic scale, where the number in front of the zero represents the number of powers of 10.
Therefore, the power ratio of a washing machine at 80 decibels will be 10⁸.
In conclusion, sound are vibrations which transmit energy.
Learn more about sound at: brainly.com/question/1199084
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