Fhfjhfjikauijpoejfdjkkjff\
The answer is Rarefactions.
These are the parts of a wave that are further apart and the ones that are close together are called compressions.
I don’t think it is any of the choices stated above!
Answer:
You would hear a loud trumpet sound that can be heard from a large distance.
Explanation:
Kinetic energy of the rock just before it hits the ground=KE=33000 J
Explanation:
Weight= 2200N
mg=2200
m(9.8)=2200
m=224.5 kg
initial velocity=0
final velocity =V
using kinematic equation V²=Vi²+2gh
V²=0+2 (9.8)(15)
V=17.1 m/s
now kinetic energy= 1/2 mV²
KE= 1/2 (224.5)(17.1)²
KE=33000 J
Thus the kinetic energy of the rock just before it hits the ground=33000 J