Astudent makes a short electromagnet by winding 300 turns of wire around a wooden cylinder of diameter d= 5.0 cm. the coil is connected to a battery producing a current of 4.0 a in the wire what is the magnitude of the magnetic field a distance of 20.0 cm from the center of this device?

10 points! will mark brainiest! in a heat engine if 1,000 j of heat enters the system and the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2,000 j 1: write the equation 2: list out your known variables 3: plug the numbers into the equations 4: solve 5: write your solution statement that includes initial energy and final energy added you so much!