Red is the lowest because it has the shortest wavelengths
<h2>None of these forces contribute for these vibrations </h2>
Explanation:
The atoms or molecules of the solid substance vibrate at zero degree absolute even , due to kinetic energy of the constituent atoms or molecules .
According to Kelvin , the kinetic energy of these particles should become zero at absolute zero .
But it is found by actual calculations that the kinetic energy of constituent atoms or molecules does not become zero .
Thus all the above forces are not considered as the main cause of these vibration .
Answer:
680.6 N
Explanation:
The net force here is the resultant force. Taking that the two given forces act perpendicular to each other then the resultant is the hypotenuse. Therefore, where d is the magnitude of downward force and s is the magnitude of the sideways force. Substituting 631 N for downward force and 255 N for sideways force then
Therefore, the magnitude of net force is equivalent to 680. 6 N
1 MHz --- 1 000 000 Hz
99.5 MHz --- x
x = 99 500 000 Hz = 99,5x10^6 Hz
v = λ . f
c = λ . f
3x10^8 = λ . 99,5x10^6
λ = 3x10^8 / 99,5x10^6
λ ≈ 0,0302x10^2
<em>λ ≈ 3,02 m</em>
i think is the letter (B), isn't it?