Although the speeds are different, but the two waves will
reach the same station so the same distance.
dp = ds
The formula for distance given velocity and time is:
d = v t
Substituting this to the 1st equation:
vp tp = vs ts
Since p wave arrived 2 min (120 s) earlier than s wave,
therefore
tp = ts - 120
Then,
vp (ts – 120) = vs ts
8.5 (ts – 120) = 5.5 ts
8.5 ts - 1020 = 5.5 ts
3 ts = 1020
ts = 340 s
tp = ts – 120 = 340 – 120 = 220 s
Then using either dp or ds, we can calculate how far away the
earthquake is:
dp = vp tp
dp = 8.5 * 220
dp = 1870 km = 1.9 * 10^3 km
<span>The force that opposes the movement of an object through water is called drag. This is a type of frictional force. This force normally depends on the density and the viscosity of the fluid in question. The liquid which has more density and more viscosity or stickiness will produce a greater amount of drag force on an object than a fluid that is less dense and less viscous in nature. River water normally has less drag than that of sea water. </span><span> <span>
</span></span>
Answer:
0 N
Explanation:
Net force = mass × acceleration
∑F = ma
The velocity is constant, so the acceleration is 0. Therefore, the net force is 0.
Answer:
An ion.
Explanation:
Atoms can gain or lose electrons and become ions, which are atoms that have a positive or negative charge, because they have unequal numbers of protons and electrons.
Answer:2250J
Explanation:
mass(m)=20kg
velocity(v)=15m/s
Kinetic energy=(m x v^2)/2
Kinetic energy =(20 x 15^2)/2
Kinetic energy =(20x15x15)/2
Kinetic energy=4500/2
Kinetic energy=2250J
