Answer:
There are three basic categories of musical instruments: percussion, wind, and stringed instruments. Most musical instruments use resonance to amplify sound waves and make sounds louder. In a musical instrument, the whole instrument and the air inside it may vibrate when the head of the drum is struck.
B) millimeter, centimeter, meter, kilometer
Answer:
Bar magnets are permanent magnets. This means that their magnetism is there all the time and cannot be turned on or off as it can with electromagnets .
Explanation:
Answer:
convection
Explanation:
Heat transfer by convection is caused by differences of temperature and density within a fluid.
Answer:
Spiral
i know it is so dont say nun people
Explanation: