If mechanical energy is conserved, then a pendulum that has a potential energy of 20 J at its highest point and 0.5 J at its low
1 answer:
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The ranges of frequency are:
UVA:
UVB:
Explanation:
The relationship between frequency and wavelength for an electromagnetic wave is the following:
where
f is the frequency
is the speed of light
is the wavelength
For the UVA, the range of wavelength is 320 nm - 400 nm, so
So the corresponding frequencies are
For the UVB, the range of wavelength is 280 nm - 320 nm, so
So the corresponding frequencies are
So the ranges of frequency are:
UVA:
UVB:
Learn more about waves, frequency and wavelength:
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Answer:
the moment of inertia of this system of masses about the y-axis is 99 kgm²
Explanation:
Given the data in the question;
mass m₁ = 5.0 kg at point ( 3.0, 4.0 )
mass m₂ = 6.0 kg at point ( 3.0, -4.0 )
Now, Moment of inertia of this system of masses about the y-axis will be;
Moment of inertia ₓ = mixi²
Moment of inertia = m₁x₁² + m₂x₂²
we substitute
Moment of inertia = [ 5.0 × ( 3 )² ] + [ 6.0 × ( 3 )² ]
Moment of inertia = [ 5.0 × 9 ] + [ 6.0 × 9 ]
Moment of inertia = 45 + 54
Moment of inertia = 99 kgm²
Therefore, the moment of inertia of this system of masses about the y-axis is 99 kgm²