Which estimate is realistic? A) Volume of air in an inflated balloon is around 22.4dm³.
B) Weight of an apple is around 3.0N.
C) Area of a piece of tissue paper is around 17cm².
D) Potential energy of an adult living in a 2 story house is around 2500J.
E) Kinetic energy of a baby crawling on the ground is around 9.0J.

Provide a short explanation as to why you believe your answer is the most realistic.

Copper has free electrons per cubic meter. a 71.0-cm length of 12-gauge copper wire that is 2.05 mm in diameter carries 4.85 a of current. (a) how much time does it take for an electron to travel the length of the wire? (b) repeat part (a) for 6-gauge copper wire (diameter 4.12 mm) of the same length that carries the same current. (c) generally speaking, how does changing the diameter of a wire that carries a given amount of current affect the drift velocity of the electrons in the wire?

What is relative velocity? in which condition is relative velocity known by adding the velocity of the first body and that of the second body

The magnetic field inside a superconducting solenoid is 4.50 t. the solenoid has an inner diameter of 6.20 cm and a length of 26.0 cm. determine (a) the magnetic energy density in the field and (b) the energy stored in the magnetic field within the solenoid.