A current-carrying loop of wire lies flat on a horizontal tabletop. When viewed from above, the current moves around the loop in a clockwise sense. For points on the tabletop ouside the loop, the magnetic field lines caused by this current a. circle the loop in a counterclockwise direction.
b. point straight up.
c. point straight down.
d. circle the loop in a clockwise direction.

the current is 0.6

voltage ÷ resistance = current

so 12 ÷ 20 = 0.6

i don't know that i agree with that but what's the question ?

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.

= initial pressure

= final pressure = 2

= initial volume

= final volume = /4

= initial temperature = 20 c = 20 + 273 = 293 k

= final temperature = ?

using the equation