Answer:
D. Sound waves are being transmitted through the air in the drum.
Explanation:
Sound waves are being transmitted through the air in the drum because sound waves needs medium for their propagation from one place to another. Sound waves are considered as longitudinal waves due to parallel movement of air molecules to the velocity of the wave. The sound waves moves from one place to another through solid, liquid and gaseous medium. It moves fastest in solids but with lower speed in gases.
Answer:
Public service workers often are not covered by Social Security, so their employer (state or local government) does not pay into Social Security as other employers do. Since the worker does not qualify for Social Security benefits, his/her pension is the only source of retirement security.
Explanation:
The three most notable benefits of using good riding gear are keep you comfortable, keep your protected, and help you be much visible.
<h3>What does riding gear mean?</h3>
Riding gear is a term used to refer to the equipment and clothing used by an individual to ride a horse, motorcycle, bicycle or other means of transportation.
Generally the riding gear has several functions depending on the practice that is being carried out; In the case of motorcycles, riding gear includes protection elements, comfort elements and visibility elements. Some elements that make up the riding gear are:
- Helmet
- Gloves
- Protectors
- Kneepads
- Elbow pads
- Glasses
- Sneakers
- Lights
- Reflective
- Among others
Learn more about riding gear in: brainly.com/question/518896
#SPJ1
