1. Find an algebraic expression for the electric field strength E0 at the surface of a charged sphere in terms of the sphere's potential V0 and radius R. 2) What is the electric field strength at the surface of a 0.80-{\rm cm}-diameter marble charged to 550 V?

Explain to someone who knows nothing about fossils the study of invertebrate paleontology and how it scientists understand the history of the earth. be sure your explanation contains a minimum of two complete sentences.

Rank the six combinations of electric charges on the basis of the electric force acting on q1. define forces pointing to the right as positive and forces pointing to the left as negative. rank positive forces as larger than negative forces. q1,q2,q3 = positive(+) q1 = + q2 = + q3 = - q1 = + q2= - q3= + q1= - q2= + q3= + q1= + q2= - q3= - q1,q2,q3 = negative

What instrument is used to measure liquid volume?