The siren from a small town fire station is heard at a location 3 kilometers away. if the air temperature is 20°c, at what velocity did the sound travel? 319 m/s 331 m/s 343 m/s 387 m/s

Why is rain likely when warm, moisture-laden air meets cold air? a) the lighter warm air will rise and cool down, causing condensation and rain. b) the cold air moves faster and pushes the warm air away, causing condensation and rain. c) the moisture in the warm air condenses on contact with the cold air, causing rain to fall. d) the cold air mixes with the warm air, reducing its temperature causing moisture to condense.

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

Wavelength of 125 meters is moving at a speed of 10 m/s. what is it's frequency?