A singer raises his pitch one octave. what quality of the sound wave has changed?

If a lady walks into a room wearing perfume, eventually everyone in the room will be able to smell the perfume even if they are not standing right next to her. which of the following principles does this observation best support? A.

A kid on a playground swing makes 6 complete to-and-from swings each 30 seconds (a) the frequency of the swinging is? (b) the period of the swinging is?

Timmy and Sarah go for a hike. they hike 5 miles in three hours and 15 minutes. what is the average speed to the nearest 10th of a mile. (Hint - you need to convert minutes to hours)

White light enters a glass prism, but the color components of the light are observed to emerge from the prism.

The pressure is measured at the bottom of a cylindrical container with cross-sectional area A that is filled to a height H by a liquid with density rhoL.

Explain how electric current is able to flow.

What is the angle between a rigid object and the force applied to it that yields torque using the equation T=Fd?

What is the difference between speed and velocity and give an example.

Water flows over a section of niagara falls at the rate of 1.2x10^6 and falls 50.0 m. how much power is generated by the falling water

What is the darkest side of the moon called?