A guitar is perfectly tuned. You tighten the strings. Which of the following is true

A. The wavelengths of the waves are longer than before
B. The speed of the sounds coming from the guitar is faster
C. The amplitudes of the sounds are larger the frequencies of the sounds fom the quitar are higher

Ahypothesis is? close agreement by competent observers of observations of the same phenomena. a guess that has been tested over and over again and always found to be true. an educated guess that has yet to be proven by experiment. the long side of a right triangle. a synthesis of a large collection of information that includes guesses.

Ametal ball with a mass of 0.028 kg is dropped from rest at a height of 1.0 meters above the ground. assuming the energy in the ball is conserved, how much kinetic energy will the ball have when it is 0.5 meters above the ground?

A20 cm long spring is attached to a wall. the spring stretches to a length of 22 cm when you pull on it with a force of 100 n. what is the spring constant