The north and North Pole or the south and the South Pole are facing each other which is causing them to repel
The law of conservation tells us that no mass is lost. This is true because when wood burns or turns into ash, some of it is escaped as gases like carbon dioxide and water vapor into air . If we calculate the mass of these atmospheric gases that evolved when the wood turned into ash, we would find that the total mass of all these substances including the ash is equal to the log of wood.
From the balanced reaction, we are given that 1418 kJ of
heat is released for every 2 moles of nitromethane (CH3NO2) reacted.
So first calculate the moles of CH3NO2:
moles CH3NO2 = 5560 g / (61.04 g/mol)
moles CH3NO2 = 91.1 mol
So total heat released is:
total heat = (-1418 kJ / 2mol) * 91.1 mol
<span>total heat = -129,162.52 kJ = -129.16 MJ</span>
If a car is moving with uniform velocity, then there is
no net force acting on it.
The force of the engine is exactly enough to balance
the forces of friction and air resistance against the car.
Also notice that there can't be any centripetal force, and the
car can't be on a curve. If it's moving with "uniform velocity",
that means steady speed in a straight line.
Explanation:
Here,
Velocity of A=60km/hr
Velocity of B=80km/hr
Now,
Relative velocity of B with respect to A in the same direction=Velocity of B - Velocity of A
=80km/hr-60km/hr
=20km/hr
