The most recent evidence supporting the theory of plate tectonics would include a) gps monitoring of plate speeds and movements. b) the wwii discovery of paleomagnetic reversals. c) the 1963 mapping of the tectonic plate boundaries. d) c-14 dating of marine fossils found in the himalayas.

The sound level near a noisy air conditioner is 70 db. if two such units operate side by side, the sound level near the, would bea. 70dbb. 73 dbc. 105 dbd 140 db

Which describes increasing the efficiency of energy resource

Materials will have different energies associated with the electrons inside them. this is related to how strongly bound they are by their work function. if we sandwich a material with a very low energy between two materials with a high energy, we create a trap for an electron. if this trap is very narrow in one direction in comparison to the others, this is approximately a 1-dimensional box that confines the electron. what is the lowest energy of an electron in the box if the thinnest direction across the materials is 4.81 nm?