In the formula ρ = m/V, what does “ρ” indicate? A. mass B. volume C. density D. force 相关知识点: 试题来源: 解析 C。本题考查物理公式中符号的含义。在公式 ρ = m/V 中,ρ 代表密度(density)。A 选项 mass 是质量;B 选项 volume 是体积;D 选项 force 是力。反馈 收藏 ...
If the temperature is the same at all heights, the problem is to discover by what law the atmosphere becomes tenuous(稀薄) as we go up. If N is the total number of molecules in a volume V of gas at pressure P, then we know PV=NkT, or P=nkT, where n=N/V is the number of ...
2. The Formula for the Mass of the Electron in Terms of the Masses of Leptons and Quarks and the Fine Structure ConstantR. A. Frino
In fluent, to set up that wall boundary, there is also the species tap to let us to fill out the mass fraction, so I put mass fraction=1, because there is only one species on that boundary. Therefore, how can I calculate the mass flux of that species [kg/m²s] ...
Organisms have the capacity to make decisions based solely on internal drives. However, it is unclear how neural circuits form decisions in the absence of sensory stimuli. Here we provide a comprehensive map of the activity patterns underlying the genera
Modelling extreme values distributions, such as wave height time series where the higher waves are much less frequent than the lower ones, has been tackled from the point of view of the Peak-Over-Threshold (POT) methodologies, where modelling is based on
Because the molecules of a fluid can move around each other, they tend to "squish" and "slosh." When force is applied to a fluid, it does not instantly propagate through the entire volume. Instead, the molecules close to the force push on those farther away, and pressure builds ...
If the interval is shortened from [0,1] to [0,x], then the eigenvalues λ n are functions of x. In this paper it is shown that the mass density ρ (x) in the differential equation is related to the trace, tr(x)=∑(1/λ n (x)), by the formula ρ(x)=tr '' +(2/x)tr...
The VOF-DEM model considers the volume of particles, so the volume conservation of the model needs to be verified to prove the correctness of the model. The height at which the water level rises when the particles are in a stable state is the volume of all particles divided by the cross...
𝑝∞p∞ is the reference pressure at the inflow inlet (Pa), Δ𝑝Δp is the difference between instantaneous and average pressure value (Pa), 𝜌ρ is the fluid density (m3/kg), 𝜂ℎηh is the hydraulic efficiency, 𝜂𝑣ηv is the volume efficiency, and 𝜂𝑚ηm is the ...