Describe how matter cycles through an ecosystem

Acar with a mass of 1,500 kg requires a centripetal force of 640 n to safely follow a circular curve in the road at 13.4 m/s. what is the radius of the curve?  

Which of the following describes silver? a. a material that has a high resistance and prevents charges from moving freely b. a material that has a low resistance and allows charges to move freely c. a material that has a low resistance and prevents charges from moving freely d. a material that has a high resistance and allows charges to move freely

What is the displacement current in the capacitor if the potential difference across the capacitor is increasing at 500,000v/s? express your answer to two significant figures and include the appropriate units.