Which will cause an electromagnetic solenoid to increase its strength? O
A. increasing the number of wire coils in the solenoid
B. replacing the wire with an insulator inside the solenoid
C. removing the iron core from the solenoid
O D. increasing the temperature surrounding the solenoid

The metric unit of electrical power is the watt volt ampere ohm

Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct

Two objects of different mass start from rest, are pulled by the same magnitude net force, and are moved through the same distance. the work done on object 1 is 900 j. after the force has pulled each object, object 1 moves twice as fast as object 2. how much work is done on object 2?