Velocity is the speed of something in a given direction.
Vector is a quantity having direction as well as magnitude
Force (N) = mass (kg) x velocity (m/s) / time (s)
Answer:
1. 2HCl + MgO —-> MgCl2 + H2O
Explanation: You add a 2 in front of the HCl in order to have 2 hydrogens on each side and 2 Cl on each side. Since, Magnesium only has one on each side, they’re already balanced. Same with Oxygen so you leave it alone.
Explanation:
Whenever the light passes through hole or slit then it tends to bend that is actually a diffraction. It will then made the interference pattern of light and dark bands that due to constructive and destructive interference.
So by using the equation of diffraction,
dsinA = nL
SinA is a geometric component it can be written as,

∵ x is the distance from screen.
∵ y is the half of the width of central maximum.
now by putting the values in mm,

d = 2.15×
mm
Solids wall cement chat door tree
liquids oil ,water ,saline solution,soap
gases. tear gas meathian gas steam