Homework Statement Show that the variation of gravity with height can be accounted for approximately by the following potential function V = mgz(1+z/re) in which re is the radius of the Earth. find the force given by the above potential function. Homework Equations V = GM/r The Attempt ...
I came across a derivation of the Noether theorem with a step I don't understand; the transformation of the time and configuration space are written as$$\tau(t,\varepsilon) = t + \varepsilon \delta t, \quad Q^a(q,\varepsilon) = q^a + \varepsilon \delta q^a$$here ##\varepsi...
Aiming at the problem that it is difficult to determine the reasonable working resistance of support in fully-mechanized top coal caving face with large mining height, this paper discusses it from the perspective of preventing rib spalling of coal wall, and holds that the support resistance of wo...
Several statistics have been proposed for mixed models (Table 1), Although theoretical derivation or developing new and we describe them briefly in the following sections. statistics are beyond the scope of this study, we introduce four R2-like statistics for nonstandard linear models, describe ...
were women. Of the 117 studies with data on glycemic variables, 113 (97%) with 351,270 participants (96% of all participants) also had data on body-mass index (BMI); the remaining four studies either did not collect anthropometric information or only had self-reported height and weight ...
(Max Lens Mod) was mounted on the top of the UAV (Fig.2f). The assembled GoPro DHP is 4.2 cm in height and weighted approximately 182 g. Five VSPs were selected from each forest window. At each VSP, at least two photos were taken at each sampling height in 2 m or 5 m ...
account, with which the formation of plastic hinge (PH) only occurs at the bottom of the bridge piers, for the case of transverse seismic response, the derivation of the proposed method is similar, with the exception that the PH may occur at both the bottom and the roof of the bridge ...
Internal training load was monitored using ratings of perceived exertion (RPE) and session rating of perceived exertion (sRPE). Recovery status was obtained using the total quality recovery (TQR) scale. The results show an age-related influence for external training load (p ≤ 0.001; d = 0.29...
Variation with respect to the metric Hi everyone! There is something that I would like to ask you. Suppose you have \frac{1}{\sqrt{-g}} \frac{\delta (\sqrt{-g} (g^{ab} u_a u_b + 1))}{\delta g^{cd}} The outcome of this would be ##u_{c}u_{d}## or ##-u_{c}...
As with other quantitative traits such as height and intelligence, genetic variation is associated with phenotypic variation in the general factor of neuroticism\({h}_{{snp}}^{2}\) = 10.7%,se = 0.49%) and the special factors of worry/vulnerability (\({h}_{{snp}}^{2}\) ...