Match the items below with the correct type of supernova.

MSS:

WD:

Can only occur in a galaxy with ongoing star formation.

Can only occur in a binary system.

Star explodes completely, leaving no compact object behind.

Black hole or neutron star left behind.

Spectra always lack strong hydrogen lines.

Has a brighter peak luminosity.

Can occur in a very old star cluster.

Afisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. it takes a time of 2.20 s for the boat to travel from its highest point to its lowest, a total distance of 0.670 m . the fisherman sees that the wave crests are spaced a horizontal distance of 5.80 m apart. (a) how much is the wavelength? (b) find the period of the wave. (c) how fast are the waves traveling? (d) what is the amplitude a of each wave?

What is a costume plot? why is it important to a film or theater production?

What are the similarities & differences between a thermistor and a light dependent resistor in physics?