What is the wavelength of an ultrasound signal having a velocity of 1,500 m/sec. at 2.5 mhz?

The wavelenght is λ= 6 * 10⁻⁴m.

Explanation:

v= 1500 m/s

f= 2.5 MHz = 2.5 *10⁶ Hz

λ=v/f

λ= 6 * 10⁻⁴ meters

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.