1. The instrument at the right is 5 meters long and is vibrating as shown It vibrates up and down with 33 complete vibrational cycles in 10 seconds.

a) What type of instrument being used?
b) Which harmonic is shown in the diagram?
c) Determine the frequency, period, wavelength and speed for this
wave.
d) Determine the 3rd harmonic frequency?​

If the force applied to an object remains constant, is more power needed for the object to move faster ? explain

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

Rank the six combinations of electric charges on the basis of the electric force acting on q1. define forces pointing to the right as positive and forces pointing to the left as negative. rank positive forces as larger than negative forces. q1,q2,q3 = positive(+) q1 = + q2 = + q3 = - q1 = + q2= - q3= + q1= - q2= + q3= + q1= + q2= - q3= - q1,q2,q3 = negative