Newton’s first law of motion states that an object at rest stays at rest, and an object in motion stays in motion, unless acted on by an unbalanced force. which statements describe newton’s first law? check all that apply. a.    an object must be at rest before a force can move it. b.an overall net force must be applied to an object before it can move. c.newton’s first law of motion is also known as the law of inertia. d. inertia does not apply to newton’s first law. e. newton’s first law applies to an object whether it is moving or not.

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

To understand the behavior of the electric field at the surface of a conductor, and its relationship to surface charge on the conductor. a conductor is placed in an external electrostatic field. the external field is uniform before the conductor is placed within it. the conductor is completely isolated from any source of current or charge. part a: which of the following describes the electric field inside this conductor? it is in the same direction as the original external field.it is in the opposite direction from that of the original external field.it has a direction determined entirely by the charge on its surface.it is always zero. part b: the charge density inside the conductor is: 0non-zero; but uniformnon-zero; non-uniforminfinite part c: assume that at some point just outside the surface of the conductor, the electric field has magnitude e and is directed toward the surface of the conductor. what is the charge density η on the surface of the conductor at that point? express your answer in terms of e and ϵ0

Properties seen when one one substance changes to another are known as properties