<u>Pressure</u> is the force exerted by a gas, a liquid or a solid on a surface (or area)
.
Its unit according to the International System of Units is Pascal which is equal to
and its formula is:
Answer:
The waves are traveling in a speed of
v=1.20 m/s
Explanation:
The fisherman see a wave at 6m apart so that's the wavelength
Now the period is the time between two successive waves so
The velocity of the waves is describe by:
Answer:
0.069 J
Explanation:
mass of first ball (M1) = 0.839 kg
mass of second ball (M2) = 0.839 kg
initial velocity of first ball (U1) = 0.406 m/s
initial velocity of second ball (U2) = 0 m/s
For head on elastic collisions of equal masses, the velocities of the masses always changes.and this has also been clearly stated in the question. Hence the velocity if mass A will interchange with that of mass B after collision.
therefore
final velocity of first ball (V1) = 0 m/s
final velocity of second ball (V2) = 0.406 m/s
kinetic energy of second ball after collision = 0.5m
= 0.5 x 0.839 x 0.406 x 0.406 = 0.069 J