A 2.0 m × 4.0 m flat carpet acquires a uniformly distributed charge of −10 μC after you and your friends walk across it several times. A 3.0 μg dust particle is suspended in midair just above the center of the carpet.

Part A

What is the charge on the dust particle?

Express your answer with the appropriate units.

q=

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration

What characteristics of hv2112 make it the best candidate to be classified as a thorne-zytkow object?

Hydroelectricity provides about 7 percent of the electricity generated in the united states. (a) explain how a hydroelectric power plant converts energy stored in water into electricity. (b) identify two factors that determine the amount of electricity that can be generated by an individual hydroelectricity power plant. (c) describe the two main types of land-based hydroelectric power plants. (d) describe two economic advantages and two environmental disadvantages of hydroelectricity.