Which of the following conditions would decrease the ability of a person to hear a sound? a. the distance to the sound source becomes shorter. b. a wave loses energy as it moves through a medium. c. the liquid medium in which the sound travels is replaced with an elastic solid. d. the frequency of the sound remains steady at 100 hz.

Which safety measures should you follow during a thunderstorm? check all that apply. (a) avoid touching anything that conducts electricity. (b) avoid touching a person who has been struck by lightning. (c) go outside. (d) keep your computer turned off. (e) stay out of water. (f) stay inside.

Engineers find a new metal that is stronger than steel but much lighter. this material is also significantly cheaper than what is currently used for most aircraft, available in large quantities, and easy to manufacture. the engineers are excited because this new material will lower the costs of buying and operating airplanes for companies. what is probably the best step for the engineers to make next?

If the textbook weighs 19.6 newtons on venus,what is the strength of gravity on venus?