How To Questions & Answers | Page 23

The quotient of $75578 \div 53$ is 1426 with a remainder of 0.

Another term for the all-channel communication network is the "wheel network", characterized by direct communication paths between all members, calculated by the formula $\binom{N}{2} = \frac{N(N-1)}{2}$.

Gravitational work is not always negative. It depends on the direction of the displacement relative to the force, being negative when moving against gravity and positive when moving with it.

A decrease in temperature does not change the mass of a balloon, as the number of gas molecules remains constant, but reduces its volume according to the ideal gas law: $PV = nRT$.

At a pressure of 4.579 mm and a temperature of 0.0098°C, water can coexist in solid, liquid, and gas phases, as these conditions correspond to its triple point.

Volcanic mountains, which form through volcanic activity rather than plate collision, are characterized by the eruption and accumulation of magma, e.g., Mount Fuji.

Nitrogen $(N_2)$ is a gas at room temperature.

NMR distinguishes between axial and equatorial protons by their different chemical shifts ($\delta_{\text{axial}} > \delta_{\text{equatorial}}$) and coupling constants ($^3J_{\text{ax-ax}} > ^3J_{\text{ax-eq}} \approx ^3J_{\text{eq-eq}}$).