A6.53 ! 1014 hz electromagnetic wave propagates in carbon tetrachloride with a speed of 2) 2.05 ! 108 m/s.

the wavelength of the wave in vacuum is closest to:

a) 413 nm

b) 368 nm

c) 505 nm

d) 459 nm

e) 314 nm

E) 314 nm

Explanation:

The relationship between speed, frequency and wavelength for an electromagnetic wave is given as:

                         V = fλ

Where;

V is the speed of the wave

f is the frequency of the wave

λ is the wavelength.

Making λ the subject of the equation,

                       λ = V/ f

                       λ = 2.05 x 10^8 / 6.53 x 10^14

                          = 3.14 x 10^-7 m

                         = 314 x 10^-9 m

                         = 314 nm

wind moving at higher speeds will transfer more energy to the water, resulting in stronger waves.

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.