Find the equivalent resistance, the current supplied by the battery and the current through each resistor when the specified resistors are connected across a 2-v battery. part (a) uses two resistors with resistance values that can be set with the animation sliders, and you can use the animation to verify your calculation. in part (b), three resistors are specified.

(a) two resistors are connected in series across a 2-v battery. let r1 = 10 ? and r2 = 9 ? .
req = ?
i = a
? v1 = v
? v2 = v

(b) add a third resistor to the circuit in series. let r1 = 10 ? , r2 = 9 ? , and r3 = 3 ? .
req = ?
i = a
? v1 = v
? v2 = v
? v3 = v

Explain how plate tectonics have changed earth’s surface over time. include the role of plate tectonics in the creation of landforms.

Astudent is performing an experiment comparing sound and light waves. the student gathers the following data. what conclusion does the student most likely make based on this data? light waves always travel the same speed; however, the speed of sound is determined by the medium that it travels through. all sound waves always have the same energy, so the temperature of the medium does not affect wave speed. light needs to vibrate particles, so it travels fastest in tightly packed solids, while sound does not need a medium, so it travels fastest in a gas. tightly packed particles in solids slow down the light waves; however, sound waves make particles bounce into each other, so they travel faster in solids.

A2-kg bowling ball is 2.5 meters off the ground on a post when it falls. just before it reaches the ground, it is traveling 7 m/s. assuming that there is no air resistance, which statement is true?