A jet flies over the ocean. A sound wave travels from the jet to the surface of the ocean. Almost none of the energy from the
sound passes into the water. The diagram below illustrates the path of the sound wave.
Which of the following statements about this scenario is true?
A. Both the direction and the speed of the sound waves remain the same.
B.
The direction of the sound waves changes but its speed remains the same.
C. The speed of the sound waves changes but its direction remains the same.
D.
Both the direction and the speed of the sound waves change.

Group control group #1 experimental group yes yes yes control group #2 no new drug orange juice bed rest no yes no yes ves which of the following is the best explanation of why a second control group was included in this experiment? o a. to provide the volunteers in the study with something to drink o b. to prove that the common cold cannot be cured c. to confuse anyone who is trying to steal their new drug and sell it as their own invention o d. to researchers conclude that results are related to the new drug and not to the orange juice submit e previous