Answer:
The center of mass velocity is
Explanation:
From the question we are told that
The mass of the cylinder is
The radius is
The length is
The height of the plane is h = 79.60 m
and the distance covered is
The center of mass velocity o the cylinder when it reaches the bottom is mathematically represented as
substituting values
Answer:The net force acting on the car is 3×103 Newtons
Explanation:
To find the x component use the following formula, where Ф = theta = the angle 'a' makes with the x axis.
Answer:
w=255
Explanation:
The change in internal energy is given by the first law:
ΔE = Q - w
where ΔE is the change in internal energy of the system
q is the heat added to the system
w is the work done *by* the system on the surroundings
So, for the first phase of this process:
ΔE = Q - w
Q=160J
w=309J
ΔE = 160J - 309J = -149J
To bring the system back to its initial state after this, the internal energy must change by +149J (the system myst gain back the 149 J of energy it lost). We are told that the system loses 106 J of heat in returning to its initial state, so the work involved is given by:
ΔE = Q - w
+149J = -106J - w
255J = -w
w = -255J