An engineer wants to build a bridge made of concrete and steel. The bridge needs to be able to withstand forces like tension, comprension and stretching.

Which mechanical properties of the materials to be considered?

strength and elasticity
elasticity and density
flexibility and elasticity
strength and hardness

Which food could be transported in a galvanized metal container?

According the inverse square law, doubling the distance from the source of the sound, a speaker, for example, will drop the sound 6 db each time. if you were standing in the back of an auditorium, 32 feet away from a speaker not using any amplification, would you be able to hear a speaker clearly? why or why not?

Substances that can pass through cell membranes by diffusion include a. na ions. b. proteins c. glucose. d. oxygen.