Answer:
B
Explanation:
The heat from radioactive processes within the planet's interior causes the plates to move, sometimes toward and sometimes away from each other. This movement is called plate motion, or a tectonic shift.
P = m*v
conservation of momentum suggests
initial momentum equals final momentum
mv-initial = mv-final
(0.0010 kg)(50 m/s) = (0.0010 kg + 0.35 kg)v
thus:
v = (0.0010)(50)/(0.351) = 0.142 m/s
Answer:
10 m/s
Explanation:
The speed of a wave is given by
where
is the wavelength
f is the frequency
For the wave in this problem,
- The frequency is given by the number of oscillations per second, so
- The wavelength is
So, the wave speed is