Answer:
They travel slower than P waves.
They result in much ground motion.
Explanation:
There are three types of seismic waves: P waves, S waves and Surface waves.
P wave are primary waves which require medium to travel. These are fastest waves. S waves are the secondary waves. These are transverse waves. S waves move slower than P waves. Both of these waves can travel through the inner layers of Earth.
Surface waves travel near the surface or above the surface of the Earth. These travel slower than S waves and P waves but have large amplitudes which could much ground motion and cause huge destruction.
Hence, the statements describe the surface waves:
They travel slower than P waves.
They result in much ground motion.
The resistance of the piece of wire is
where
is the resistivity of the copper
is the length of the piece of wire
is the cross sectional area of the wire
By substituting these values, we find the value of R:
Then, by using Ohm's law, we find the potential difference between the two points of the wire:
Answer:
c
if you calculate the net force you get 490 N
The average speed is (distance)/(time) = 300m / 2min. That's 150m per minute, or 2.5m per second. The average velocity is (displacement)/(time) = (distance from the start point to the end point regardless of the route)/(time)= zero.
here two cars are placed on an aluminium track
so there is no friction on two carts during their motion and hence there is no external force on them
now if there is no external force so momentum is conserved
here
now plug in all values in it
divide whole equation by mass 0.4
also be the equation of coefficient of restitution
now we have
now by solving above equations we will have
so after collision speed of two carts is 0 m/s and 1.5 m/s after collision