Answer:
The gravitational potential energy of that rock is 174371.4 J.
Explanation:
Given
To determine
We need to find the gravitational potential energy of the rock
We know that the potential energy of a body is termed as the stored energy due to its position.
One kind of energy comes from Earth's gravity — Gravitational potential energy (GPE).
Gravitational potential energy (GPE) can be determined using the formula
where
- is the mass
- is the gravitational acceleration which is equal to g = 9.8 m/s²
- is the height
- GPE is the Gravitational potential energy
now substituting m = 59.31, h = 300 and g = 9.8
J
Therefore, the gravitational potential energy of that rock is 174371.4 J.
In this case, volume of the can remains constant. The relationship between pressure and temperature at constant volume is given by:
P/T = Constant
Then
Where
P1 = 40 psi
P2 = ?
T1 = 60°F ≈ 289 K
T2 = 90°F ≈ 305 K (note, 363 K is not right)
Substituting;
Answer:
a The kinetic energy is
b The height of the center of mass above that position is
Explanation:
From the question we are told that
The length of the rod is
The mass of the rod
The angular speed at the lowest point is
Generally moment of inertia of the rod about an axis that passes through its one end is
Substituting values
Generally the kinetic energy rod is mathematically represented as
From the law of conservation of energy
The kinetic energy of the rod during motion = The potential energy of the rod at the highest point
Therefore