Two charges q1 = +4 nc (positive) and q2 = -2 nc (negative) are arranged in a line. q1 is at the origin (x-0) and q2 is at x=4 m. what is the electric field at the point x 1 m on the same line? let sign of the electric field indicate the direction; positive is towards larger x and negative is towards smaller x. 38 n/c 13.5 n/c 4.5 n/c 34 n/c

What is the primary force that suspension bridges use cables to hold their spans up? a. tension force b. resistance force c. normal force d. elastic force e. applied force

Simon is writing a story about an astronaut whose spacecraft has been boarded by space pirates. the astronaut has her lucky penny in her hand behind her back as the space pirates break into the control room. she has just locked the controls so that the ship is accelerating in the direction of the control room’s ceiling. simon wants the astronaut to use the penny to hit a button on the control panel to turn off the lights and escape. the button is located a short distance behind and below the astronaut’s hands. how should simon use the theory of relativity to describe what the astronaut must do in order to hit the button?

Which form of cell division creates the sperm and egg, resulting in half of the chromosomes as the other cells?