Wave A has a frequency of 1.6 Hz, and Wave B has a frequency of 3.2 Hz. If Wave A has a wavelength of 1.0m, what do you expect will be the wavelength of Wave B? OPTIONS:
A) 2.0m
B) 1.0m
C) 0.50m
D) 0.25m

Answer is in the photo. I can't attach it here, but I uploaded it to a file hosting. link below! Good Luck!

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C

Explanation:

A- velocity=wavelength*frequency

velocity=1.0*1.6=1.6 m/s

B- wavelength=velocity/frequency

wavelength=1.6/3.2=0.5 meters

no sign of dia of fuel cell

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.