physics

A ringing bell is sending a longitudinal wave to your ear. What else is true about the longitudinal wave? Check all that apply.

-All sound waves are longitudinal. -Mechanical waves can be longitudinal. -Longitudinal waves require a medium to travel through.

Which waves are longitudinal waves? Check all that apply.

-sound waves -earthquake P-waves

If a storm is 7.5 kilometers away, how much time is expected between observations of lightning and thunder? Round your answer to one decimal place.

22.7 seconds

What best describes a possible transfer of energy?

A mechanical wave transfers energy through matter.

In an experiment, a ringing bell is placed in a vacuum jar that does not have any air in it. What best describes why the bell is seen vibrating but not heard?

Light does not need a medium to travel through, but since sound waves must have a medium to vibrate, sound is not created where no air is present.

Which statement correctly distinguishes between all mechanical and all electromagnetic waves?

Mechanical waves carry energy through a medium; electromagnetic waves carry energy through media and space.

A girl attaches the end of her jump rope to the trunk of a tree. What evidence exists that the rope is a transverse wave?

The transfer of energy is perpendicular to wave motion.

Gamma rays are high-frequency EM waves and radio waves are low-frequency. Which characteristics are the same for both waves?

They are transverse and travel at the speed of light.

What is transmitted by all waves?

energy

What type of wave is a microwave?

transverse