Which of the following best describes a direct current?

A. A circuit that has only series or only parallel components

B. Charge that jiggles back and forth very quickly

C. Charge that moves in a single direction

D. A circuit that has both series and parallel components

Which feature indicates that mars resides in the inner region of the solar system

Ahanging spring stretches by 35.0 cm when an object of mass 450 g is hung on it at rest. in this situation, we define its position as x = 0. the object is pulled down an additional 18.0 cm and released from rest to oscillate without friction. what is its position x at a moment 84.4 s later? express your answer in cm.

If a negatively charged particle is placed at rest in an electric potential field that increases in the positive x-direction, what will the particle do? a. accelerate in the positive x-direction b. remain at rest c. accelerate in the negative x-direction