Suppose that you have a rod that is positively charged, a rod that is negatively charged and a stand that allows rotation. if you are handed a rod of unknown charge-state, could you determine if it has a positive charge, a negative charge or if it is neutral? explain

If an object with an initial temperature of 300 k increases its temperature by 1°c every minute, by how many degrees fahrenheit will its temperature have increased in 10 minutes? (a) 6°f (b) 10°f (c) 18°f (d) 30°f

Acoil suspended freely, points in some direction when no current is passed through it . can you tell what will happen when a current is passed though it?

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.