What are two disadvantages of burning coal, oil, or natural gas to provide energy?

How fast and in what direction must galaxy A be moving 17 an absorption Line found at 500 nm for a stationary galaxy 1s shifted to 400 nm for A? (b) How fast and in what direction is galaxy B moving if it shows the same line shifted to 550 nm?

In which type of wave does the medium move parallel to the direction of the energy transport?

Russ makes the diagram below to organize his notes about how Newton's first law describes objects at equilibrium.

A star is held together by:gravitynuclear fissionnuclear fusionacceleration

A ship captain uses a steering wheel called a helm to turn the rudder of a sailing ahip. Do you thjnk it would be easier for him to turn a large wheel or a small wheel? explain why you think so

Which equations represent the relationship between wavelength and frequency for a sound wave? Check all that apply. v = lambdaf A = vf f = v A = StartFraction v over f EndFraction. A = StartFraction f over v EndFraction.

Objects that are closer together have a stronger force of gravity between them. True False

What is table salt (NaCl) formed by? The combination of two nonmetals. The splitting apart of a metal and a nonmetal. The combination of a metal and a nonmetal. The combination of two metals.

How does charging by conduction work?

Explain how Copernicus concluded that stars were farther away than planets. Draw a diagram showing how this principle applies to another example.