A sled is initially given a shove up a frictionless 20.0° incline. It reaches a maximum vertical height 1.60 m higher than where it started at the bottom.
Part A) What was its initial speed? Express your answer to three significant figures and include the appropriate units.

Energy flows from the producer level to the level. is called

Assume that two of the electrons at the negative terminal have attached themselves to a nearby neutral atom. there is now a negative ion with a charge -2e at this terminal. what are the electric potential and electric potential energy of the negative ion relative to the electron? the electric potential and the electric potential energy are both twice as much. the electric potential is twice as much and the electric potential energy is the same. the electric potential is the same and the electric potential energy is twice as much. the electric potential and the electric potential energy are both the same. the electric potential is the same and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron. the electric potential is twice as much and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron.

Is the portion of the electromagnetic spectrum that has a frequency just above that of visible light.