When a solid sample was heated, its temperature increased but it did not melt. What has happened to the average molecular kinetic energies of the atoms in the sample and why? A Kinetic energy remained the same because potential energy decreased B Kinetic energy remained the same because potential energy increased C Kinetic energy decreased because the temperature increased D Kinetic energy increased because the temperature increased

QUESTION 16 Which of the following statements is not true according to kinetic theory? a. Electrical attractions and repulsions between the molecules must be accounted for in the total energy of the ideal gas. b. The energy of an ideal gas only depends on the kinetic energy of the gas. C. The average energy of a molecule in an ideal gas is evenly distributed between the different degrees of freedom of the molecule. d. The molecules in an ideal gas undergo elastic collisions. e. The molecules in an ideal gas only interact during collisions.

Plasma spraying is a process used to coat the surface of a material with a protective layer to prevent material degradation. In a plasma spray process, the protective coating in powder form is injected into a plasma jet. The powder is then heated until the droplets coalesce and are propelled over the surface of the material. Once deposited on the surface of the material, the molten droplets solidify and form a protective coating layer. Consider a plasma spray process using alumina (k = 30 W/m K, ρ = 3970 kg/m³ and cp = 800 J/kg K) powder that is injected into a plasma jet at T∞ = 15,000 ° C and h = 10,000 W/m²·K. Alumina powder is made up of spherical-shaped particles with a mean diameter of 60 μm and a melting point of 2300 °C.Solving, the amount of time it would take for the particles, with an initial temperature of 20 °C, to reach their melting point from the time they are injected into the plasma jet is 5,25x10 -4 s. The mathematical resolution is in the image. I only need the…

the entropy of the universe is continually decreasing constant continually increasing the same as the energy E zero