I think this happens because during melting or boiling at constant temperature, the entropy dramatically increases because energy is removed from the system during the change. Entropy increases with increase in temperature, entropy increases steadily with increasing temperature up to the melting point of the solid, where the entropy increases further due to addition of freedom of molecules which increases the randomness of the substance. At boiling point of liquid, another abrupt increase in entropy occurs, this results from increased volume available to the atoms or molecules as they enter the gaseous state.
Answer:
I = M*(0.5R^2 + h^2)
w = sqrt [2*g*h / (0.5R^2 + h^2)]
Explanation:
Given:
- The radius of the cylinder R
- The mass of the cylinder M
- The distance between horizontal axis h
- The moment of inertia of cylinder I_c
Solution:
- When the axis of rotation and axis with respect to rotation inertia is required do not coincide then we have to apply parallel axis theorem to calculate the moment of inertia about the required axis which is at a distance h from body rotational axis as follows:
I = I_c + M*h^2
- Where I_c of a cylinder is = 0.5*M*R^2
I = 0.5*M*R^2 + M*h^2
I = M*(0.5R^2 + h^2)
- From conservation of total mechanical energy of the cylinder, the change in gravitational potential energy ΔP.E plus the change in kinetic energy ΔK.E of the cylinder must be zero:
ΔP.E = ΔK.E
M*g*h = 0.5*I*w^2
M*g*h = 0.5*M*(0.5R^2 + h^2)*w^2
w^2 = 2*g*h / (0.5R^2 + h^2)
w = sqrt [2*g*h / (0.5R^2 + h^2)]
Where,
w: The angular speed of the cylinder
Answer:
so that at temperature C = F, the speed of sound is m/s = ft/s = mi/hr. This calculation is usually accurate enough for dry air, but for great precision one must examine the more general relationship for sound speed in gases.
Explanation:
Hyper physics .com AND BRAINLIEST WOULD BE APPRECIATED
Answer:
B) sublimation
Explanation:
An example is the vaporization of frozen carbon dioxide (dry ice) at ordinary atmospheric pressure and temperature.
Answer:
Your answer should be the third one: The solar energy must be spread over a larger area
Explanation:
