The Doppler effect is the actual change in a star's frequency of a wave.

True

False

What happens when a sound wave passes from oil into air?

Why isn't Pluto currently considered a planet? A. Pluto's orbit around the sun is larger than that of any of the eight planets. B. Pluto is smaller than all of the eight planets. C.

A German scientist, George Ohm, discovered the relationship between current, voltage, and resistance. This became known as Ohm's law.

How does a mid-ocean ridge differ from a ocean trench

When two of the three variables are known the wave equation can be used to determine what

A flashlight beam strikes the surface of a pane of glass (n = 1.50) at a 61° angle to the normal. what is the angle of refraction?

Why is there controversy to the opinion that human contribution of carbon dioxide to the atmosphere is cause warming

If the resistance of a circuit increases, that means that the current has to

One watt is equal to which of these values? 1 joule/hour 1 joule-hour 1 joule/second 1 joule-second

What are some of the benefits of learned optimism that have been found in research? O A. Fewer health problems O O B. All of these C. Making more money O D. A lower divorce rate