Answer: b
Explanation: the two pieces will repel as both have obtained a static charge.
The answer is D.An ice cube melts when a person holds it in his hand
The heat from your body is causing the ice cube to melt
I think true. I'm pretty sure, but check w/ others too.
Answer:
270 μA
Explanation:
Use the magnetic field due to long, straight wire and solve for current I.


plug in the values

= 2.7×10^{-4)×10^6
=270 μA
The current that flows in the heart is 270 μA
Helium atom, in other words, it consistis of a particle having four protons and two neutrons.