The mass of a carbon atom is 2.0×10−26kg. What is the kinetic energy of a carbon atom moving with a speed of 610 m/s ? Two carbon atoms are joined by a spring-like carbon-carbon bond. The potential energy stored in the bond has the value you calculated in part A if the bond is stretched 0.050 nm. What is the bond's spring constant? show me your answer

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 the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration

What sort of waves exhibit the doppler effect?