The speed of an electromagnetic wave is a constant, 3.0 × 108 m/s. the wavelength of a wave is 0.3 meters. what is the frequency? 1.0 × 108 hz 9.0 × 108 hz 9.0 × 107 hz 1.0 × 109 hz

1.0 x 10^6 Hz

hope this helps

true tan speed = ang vel x radius

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.