Quiet operation of a fan depends mostly upon the

A. motor balance.

B. balance of the blades.

C. weight of the blades.

D. material of the blades

Which statement about soil color is true? Select one: a. Soils vary in color based on their depth. b. Soils do not vary in color based on their depth. c. Soils close to Earth's surface are always darker. d.

Aray diagram is shown. Medium 2 Medium 1 Which statement best describes the diagram?

Explain the theory of relativity in a small sentence

You poll students on whether they prefer hotdogs, chicken fingers, salad, or spaghetti for lunch. Which graph would you use to show your results? A. Bar graph B. Line graph C. Cumulative frequency graph D. Histogram SO

A car traveling at 34 m/s runs out of gas while traveling up a 5.0 â slope. how far will it coast before starting to roll back down?

A geologist estimates that a large boulder weighs 7840 N. What should he estimate the mass of this boulder to be? A. 650 kg B. 740 kg C. 780 kg D. 800 kg

Two objects have the same momentum. Do the velocities of these objects necessarily have (a) the same directions and (b) the same magnitudes? Give your reasoning in each case.

If you keep voltage constant and increase resistance resistance, what happens to current?

A scene in a movie has a stuntman falling through a floor onto a bed in the room below. The plan is to have the actor fall on his back, but a researcher has been hired to investigate the safety of this stunt.

During energy transformation, all energy systems: are a. 100 percent efficient b. lose energy c. gain heat energy d. create energy