The loudness of sound refer to how loud or soft a sound seems to a listener
Answer
True
Explanation.
Some parts of the earth are prompt to earthquakes, volcanic eruptions landslides and magma movements etc. All this may cause energy movements through the earth inform of a wave. These type of waves are called seismic waves.
Answer:
40000÷40=1000 joules is required to work in 40 seconds
C. because the energy is potential
