Ameteoroid is traveling east through the atmosphere at 18. 3 km/s while descending at a rate of 11.5 km/s. what is its speed, in km/s?

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

Light from two different sources are incident upon the same side of a polarizing filter. light from one source is polarized with total intensity ip, while light from the other source is unpolarized with total intensity iu. as you rotate the polarizing filter through 360 degrees, the intensity of the transmitted light on the other side varies by a factor of 9. what is the relative intensity of the initial polarized source to the unpolarized source, or ip/iu?

Many scientists like to study cosmic objects in the uv spectrum because objects giving off large amounts of uv light are typically and