<span>Assuming that you mean waves on the surface of a large body of water (like an ocean or lake), the most probable cause of these is the wind. </span><span>The friction between the moving air and the water surface makes the water move. Hope this answers the question. Have a nice day.</span>
<span>The mass of potassium is 39. This is obtained by adding the 19 protons and 20 neutrons found inside the nucleus</span>
Answer:
The speed of the kid and the skateboard together is 0.723 m/s
Explanation:
Let the mass of the kid be
Let the mass of the skateboard be
The initial speed of the skateboard,
The initial horizontal speed of the boy as he jumps on the skateboard,
Let the speed of the kid and the skateboard together be v
According to the principle of conservation of momentum:
Substituting the appropriate values into the given equation
36 = 49.8 v
v = 36/49.8
v = 0.723 m/s
infiltration and evaporation