What do radio waves and microwaves have in Common?
<u>A) Both are at the ideological the spectrum that has the lowest frequency. </u>
B) Both are at the spectrum that has the shortest wavelengths.
C) Both have higher frequencies than visible light.
Kinetic energy is the energy of a moving object.
Kinetic energy can be calculated using the following equation;
K.E =
where - m - mass of object
v - speed of object
substituting the values in the equation
K.E = 1/2 x 21 kg x (1 m/s)²
K.E = 10.5 J
The wavelength of violet light is given as 4.2x10^-7 m and the speed of light is 3x10^8 m/sec
The equation relating between the frequency and the wavelength is as follows:
speed of light = wavelength x frequency
Substitute with the givens in the above equation to get the frequency of violet light as follows:
frequency = (3 x 10^8) / (4.2 x 10^-7) = 7.14285 x 10^14 Hz
The threshold frequency of cesium is <span>9.39x10^14 Hz.
Since the frequency of violet light is less than the threshold frequency of cesium, therefore, the exposure to violet light won't </span><span>cause electrons to be emitted from cesium.</span>
<span>A. Vitamins help produce the immune response</span>
