Which of the following situations would produce an average velocity of zero?

A) a round-trip to school and back

B) a horse galloping in a field

C) the criss-crossing path of a flying bug

D) a trip, first to the moon, then onto Mars

What kind of process can create "rogue" waves? a. Constructive interference c. Refraction b. Destructive interference d. Standing waves

A sensor is submerged in a silo to detect any bacterial growth in the stored fluid. the stored fluid has a density of 2.3 grams per cubic centimeters.

Tom says that insulation keeps out the cold. Explain why this statement is incorrect. What should Tom have said?

Determine the wavelength, assume the density of the medium to be ρ=2.3⋅103kg/m3. express your answer using two significant figures.

A snail and an inchworm are in a race. Their race track heads north for a distance of 2 m. If the inchworm comes to the end of the race in 50 s, what was its average velocity?

During which change of state do atoms lose energy? sublimation freezing boiling melting

Why does the rotation of earth require people to establish times zones?

Which of the following statements best describes the importance of investigations in science

Which element has a complete valence electrons hell?

3. If you are part of a center or network, you can use program-level data to A. change the way you record and maintain information. B. identify professional development needs. C. improve the management systems to support child learning. D.