Explanation:
All matter contains charged particles that are always moving therefore, all objects emit EM waves.
The relation between the magnetic field and electric field is
B_{max}= c E_{max}
The wavelength becomes shorter as the temperature of the material increases.
As frequency increases, wavelength becomes smaller.
Frequency is inversely proportional to the period of time so, when increasing the period of wave, frequency decreases, wavelength becomes larger.
wave number is inversely proportional to wave length.
so, increasing wavelength decrease the wave number.
1. wavelength increases.
2. B_max remains the same
3. polarization is same
4. wave number decreases
5. frequency decreases
6. E_max is also same
7. angular frequency decreases.
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Answer: a) 24.2 rad/s² b) 6.95 rad/s
Explanation:
So the cylinder's moment of inertia is , where M is the mass of the cylinder and R is its radius.
The problem you have here is that the axle is modifying it, so we use the parallel axis theorem:
Therefore
where D is the distance from the center of mass to the axis which is a radius R
Next the Momentum with respect to the center of mass of the cylinder is
because there are no other forces rather than the cylinder's weight, now kg*m^2
a ) replace and find
b) we start by assuming that the energy is conserved because the cylinder is rolling without sliding:
so the potential energy is given by
now you have that the same amount is going to be equal to the kinetic rotational energy of the cylinder so
Answer:
23.67 m
Explanation:
We are given;
Frequency; f = 0.3 Hz
Speed; v = 7.1 m/s
Now, formula to get the wavelength is from the wave equation which is;
v = fλ
Where λ is wavelength
Making λ the subject, we have;
λ = v/f
λ = 7.1/0.3
λ = 23.67 m
Explanation:
The frequency is given to be f = 8 Hz.
Period is the inverse of frequency.
T = 1/f = 0.125 s
Velocity is wavelength times frequency.
v = λf = (0.40 m) (8 Hz) = 3.2 m/s
The wave travels 3.2 meters every second.