Which wire, when current flows through it, would be surrounded by the strongest magnetic field? A thin copper colored bar.
A copper colored coil with 2 turns.
A copper colored coil with 5 turns.
A thick copper colored bar.

In the first law of thermodynamics, triangle e=q-w, what does q stand for

Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?

Aball horizontally thrown from a cliff at 8m/s