Suppose a current flows through a copper wire. Which TWO things occur? O A. An electric field forms around the wire.
B. The field is parallel to the direction of flow of the current.
C. The field is perpendicular to the direction of flow of the current.
D. A magnetic field forms around the wire.

In a heat engine if 1000 j of heat enters the system and the piston does 500j of work, what is the final internal energy of the system if the inital energy was 2000 j1.write the equation2.list out your known variables 3. plug the numbers into the equations4.solve 5.write your solution statement that includes initial energy and final energy added.

Aprisoner is forced to go into one of three rooms, but he can choose which room. the first room is ablaze with fire. the second one is rigged with explosives that will go off as soon as he enters. the third contains a pair of lions who haven't eaten in years. which room should he choose to survive?

How is the ideal mechanical advantage of a wheel and axle calculated?