How do the properties of sound waves change as they spread out in a spherical pattern?

What are some ways that seed dispersal can happen

Am example of a mechanical wave is?

If an object has a mass if 20kg what is the force of gravity acting on it on earth

The following items describe observational characteristics that could indicate that an object is either a white dwarf or a neutron star. Match each characteristic to the correct object.

If two cars are identical except for the size of their engines, how will that affect their performance on the highway?

Does light always travel at the same speed?

Four identical 2500 kg objects are at the corners of a square with 12m side what is the distance between A and B

An iron railroad rail is 800 ft long when the temperature is 31°C. What is its length (in ft) when the temperature is - 17°C?

How does the lever arm change if you decrease the angle of the force?

Why does changing the shape of an object have no effect on the density of that object?