Which type of magma may be unable to form a volcano? A: andesitic magma
B: tephra magma
C:basaltic magma
D:rhyolitic magma

Aperson travels 35 km in 0.4hrs, followed by 53 km in 0.6 hr. what is the average speed

9. wind power creates pollution. water air soil noise

According the inverse square law, doubling the distance from the source of the sound, a speaker, for example, will drop the sound 6 db each time. if you were standing in the back of an auditorium, 32 feet away from a speaker not using any amplification, would you be able to hear a speaker clearly? why or why not?