Which progression do astronomers expect our sun to follow as it runs out of fuel? a red giant, neutron star b supergiant, supernova, black hole c red giant, white dwarf d supergiant, supernova, white dwarf?

Which terms describe the purpose of antennas on devices that use radio waves? transmit and receivemodify and amplifyamplify and receivemodify and transmit

The particles that are found in the nucleus of an atom are

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?