Ablock in the shape of a rectangular solid has a cross-sectional area of 5.24 cm2 across its width, a front-to-rear length of 15.7 cm, and a resistance of 977 ω. the block's material contains 4.45 × 1022 conduction electrons/m3. a potential difference of 39.9 v is maintained between its front and rear faces. (a) what is the current in the block

8. why do radio telescopes convert radio waves (analog signals) to electrical (digital) signals for analysis? (hint: what did the article say about the advantages of digital signals? )

Greg drew a diagram to compare two of the fundamental forces. which labels belong in the areas marked x, y and z? gravitational force electromagnetic force x. attractive y repulsive z: infinite range x: infinite range y attractive z. repulsive x. always attractive y: infinite range z: attractive or repulsive x. attractive or repulsive y infinite range z: always attractive

Area around a charged object where the objects can exert a force on another charged objects is an electric