The acceleration of a 2.00 kg object is shown below. If as=6.0 m/s2, and the object starts from rest, then what is the velocity of the object at x = 9.0 m? Hint: Use F=ma to turn an a vs x graph into a F vs. x graph. Determine work using the area under the curve, then use the work energy theorem to get v.

Atotal charge of –6.50 µc is uniformly distributed within a sphere that has a radius of 0.150 m. what is the magnitude and direction of the electric field at 0.300 m from the surface of the sphere? a) 2.89 × 105 n/c, radially inward b) 6.49 × 105 n/c, radially outward c) 4.69 × 105 n/c, radially inward d) 9.38 × 105 n/c, radially outward e) 1.30 × 106 n/c, radially inward

Avolcano erupts next to a grassland area in a valley. a. describe three ways in which material released by the volcano could impact the grassland area. b. describe three ways in which the grassland ecosystem could recover after a volcanic eruption.

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2