Answer:
The room with the lower temperature
Explanation:
Using
PV=nRT
Since both the rooms same volume and are connected, so they will have same pressure
PV=nRT=constant
nT=Constant/R=constant
If T is more n has to be less
Thus, lower the temperature, more the number molecules.
PART a)
Momentum is defined as product of mass and velocity
so here initial momentum is
given that
m = 0.3 kg
v = 18 m/s
towards East
Part b)
Since puck was initially at rest so here initial momentum must be ZERO
so here to find the force we can use
so here we have
time interval = 0.25 s
now from above equation
Part c)
Due to friction the puck lose its speed by 5 m/s
final speed = 18 - 5 = 13 m/s
mass = 0.3 kg
final momentum = (0.3)(13) = 3.9 kg m/s
now the impulse due to friction force is given as
Part d)
initial momentum of block will be ZERO as it is placed at rest
Initial momentum of the puck is given as
so total momentum before collision is given as
Part e)
since the system is isolated and there is no external force on it
So here momentum will remain conserved
so here we have
so final combined speed will be 2.6 m/s
Do not use water on chemical fires such as magnesium, or on electrical fires.
Answer:
the acceleration of the girl is 8 m/s² in opposite direction.
Explanation:
Given;
mass of the girl, m₁ = 30kg
mass of the boy, m₂ = 40 kg
acceleration of the boy, a₂ = 6 m/s²
let acceleration of the girl = a₁
Apply Newton's third law of motion;
the force exerted by the girl is equal in magnitude to the force exerted by the boy but in opposite direction.
F₁ = -F₂
m₁a₁ = -m₂a₂
30a₁ = -(40 x 6)
30a₁ = -240
a₁ = -240 / 30
a₁ = -8 m/s² (the negative sign shows that the acceleration is in opposite direction)
Thus, the acceleration of the girl is 8 m/s² in opposite direction.
Just like sedimentary rocks, metamorphic rocks can be forced to the Earth's surface too. ... All this movement can cause rocks that were once underground to be brought up to the Earth's surface. This process is called uplift. Once exposed to the elements the rock on the Earth's surface begins to weather and erode.