g According to the hydrogen model, the donor ionization energy (binding energy) in Si is 0.05 eV. Consider another semiconductor (X) with an electron effective mass (meX ∗ ) 10 times smaller and a relative dielectric constant (rX) 10% greater than those (meSi ∗ , rSi) of Si, respectively. What is the donor ionization energy of this semiconductor?

Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?

Imagine that a new planet is discovered with two moons of equal mass: moon a and moon b. the mass of the new planet is greater than the combined mass of its moons. moon a is farther away from the new planet than moon b. what is the planet's gravitational pull on moon a compared to the planet's gravitational pull on moon b? the planet's gravity repels moon a with a greater force than it repels moon b, which is why moon a is farther away. the gravitational pull on moon b is greater than on moon a because moon b is closer to the new planet than moon a. the gravitational pull on moon b is greater than on moon a because moon b is farther away from the new planet than moon a. the gravitational pull on moon a is the same as the gravitational pull on moon b because distance does not affect the planet's gravity.

Place the following substances in order of ph from lowest ph to highest. a. neutral compounds, bases, acids b. acids, neutral compounds, bases c. bases, acids, neutral compounds d. bases, neutral compounds, acids