Aperiodic wave on a string has a wavelength of 30 cm and a frequency of 2 hz. what is the speed of the wave?
2f
f
f/2
f/3

Which of the following is an example of motion in two dimensions?

Name the non metal condut electricity

As a pendulum bob swings back and forth several times, the maximum height it reaches becomes less and less. this is because more and more of the pendulum bob's energy is being transformed into a. heat energy b. kinetic energy c. potential energy d. kinetic energy and potential energy