Atransformer consists of 290 primary windings and 816 secondary windings. part a: if the potential difference across the primary coil is 23.0 v , what is the voltage across the secondary coil?
part b: if the potential difference across the primary coil is 23.0 v , what is the current in the secondary coil if it is connected across a 100 ω resistor? express your answer in amperes to three significant figures.

Suppose a force of 60 n is required to stretch and hold a spring 0.1 m from its equilibrium position. a. assuming the spring obeys hooke's law, find the spring constant k. b. how much work is required to compress the spring 0.5 m from its equilibrium position? c. how much work is required to stretch the spring 0.6 m from its equilibrium position? d. how much additional work is required to stretch the spring 0.1 m if it has already been stretched 0.1 m from its equilibrium? a. kequals 600