Answer:
Option B and Option C
Explanation:
As we know that the wavelength of light is dependent on its speed. In fact the wavelength of light is directly proportional to the speed of the light. If the speed increases, the wavelength will also increase. While moving from air to acetone the speed of light reduces, and hence the wavelength reduces.
Wavelength is inversely proportional to the frequency. In acetone, the wavelength of light reduces, thus the frequency must increase and it should be higher than the frequency of light in air.
Option B and C are correct
Answer:
r = 5.94 10⁻² m
Explanation:
The magnetic force is given by the ratio
F =q v x B
The bold indicate vectors and the vector product determines that the force is perpendicular to the other two vectors, so the modulus of the velocity does not change, but its direction, therefore the acceleration in Newton's second law is centripetal
F = m a
The magnitude of the force is
F = q v B sin θ
The centripetal acceleration is
a = v² / r
Let's replace
q v B sin θ = m v² / r
r = m v / (q B sin θ)
Let's calculate
r = 9.11 10⁻³¹ 4.8 10⁶ / (1.60 10⁻¹⁹ 9.2 10⁻⁴ sin 30)
r = 5.94 10⁻² m
B Yea that should be the right answer
High Pitch sounds have relativity large frequency and small wavelength
Friction causes kinetic energy to be converted into 'thermal energy'. The answer to this question is 'thermal energy'. An example would be if something is being rubbed against another object, there is friction and thermal energy will be produced. I hope this helps you on your assignment! You're welcome.
