The diagram shows two charged objects, x and y. 2 balls marked x on left and y on right. the left ball has arrows emerging in all directions but to the right and all arrows either point to the left or immediately bend toward the left after emerging. the right ball has arrows emanating in all directions but to the left and all arrows either point to the right or immediately bend toward the right. based on the field lines, what are the charges of the objects? x: positive y: negative x: negative y: positive x: negative y: negative x: positive y: positive

Select all the correct answers. which three statements about electromagnetic radiation are true?

Which best describes the first law of thermodynamics as compared to the second law of thermodynamics? a. the first law describes how thermal energy is conserved but not the direction it moves. b. the first law describes the direction thermal energy moves but not how it is conserved. c. the first law describes how thermal energy can be created but not how it can be destroyed. d. the first law describes how thermal energy can be destroyed but not how it can be created.

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?