Which one of the following scenarios accurately describes a condition in which resonance can occur?
a.) vibrating tuning fork is struck and begins to vibrate as the object used to strike it is placed away from the tuning fork.
b. ) a pipe's length is equal to 1⁄2 of the wavelength of the sound waves produced by a tuning fork vibrating over one end of the pipe that's open to the air at both ends.
c.) a person is holding a tuning fork on one end of a football field and another person is holding a separate tuning fork on the opposite end of the field.
d.) a column of air has a height equal to 1⁄8 of the wavelength of the sound waves produced by a tuning fork vibrating over the column of air in an open pipe that's partially immersed in water.

B. ) A pipe's length is equal to 1⁄2 of the wavelength of the sound waves produced by a tuning fork vibrating over one end of the pipe that's open to the air at both ends.

Explanation:

Resonance is a phenomenon in which a vibrating body causes another body to vibrate at a specified frequency (or wavelength) with greater amplitude. Resonance also occurs in the following situations;

i. Swinging of a pendulum

ii. Plucking a string in an acoustic guitar

iii. Pushing of a playground swing at a regular interval

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.

the right answer is 0.3 meters per second