The semiconductor CdSe has a band gap of 1.74 eV. What wavelength of light would be emitted from an LED made from CdSe? What region of the electromagnetic spectrum is this?

Why must measurements always be written with a unit?

What does a relatively high accounts receivable turnover indicate about a company’s short-term liquidity?

GaAs and GaP make solid solutions that have the same crystal structure as the parent materials, with As and P randomly distributed throughout the crystal. $GaP_xAs_{1 - x}$ exists for any value of x. Jf we assume that the band gap varies linearly with composition between x = 0 and x = 1, estimate the band gap for $GaP_{0.5}As_{0.5}.$ (GaAs and GaP band gaps are 1.43 eV and 2.26 eV, respectively.) What wavelength of light does this correspond to?

How does setting the SizeMode property to Zoom affect the image that is to be displayed in the PictureBox control?

In each blank, insert the most appropriate word

A supervisor is expected to ______ not impede, production.

Is the semiconductor zinc selenide (ZnSe), which has a band gap of 2.58 eV, photoconductive when exposed to visible light radiation? Why or why not?

What is one advantage of a Mercator projection? What is one disadvantage?

Find the projection of $\mathbf{u}$ onto $\mathbf{v}.$ Then write $\mathbf{u}$ as the sum of two orthogonal vectors, one of which is the projection of $\mathbf{u}$ onto $\mathbf{v}.$ $\mathbf{u}=\langle 6,8\rangle, \mathbf{v}=\langle 2,-1\rangle$

Mounting a projection unit The manufacturer of a computerized projection system recommends that a projection unit be mounted on the ceiling as shown in the figure. The distance from the end of the mounting bracket to the center of the screen is $85.5$ inches, and the angle of depression is $30^{\circ}$.

If the bracket is $18$ inches long and the screen is $6$ feet high, determine the distance from the ceiling to the top edge of the screen.

Look at the following code.

struct Town
{
    char townName[51];
    char countyName[51];
    double population;
    double elevation;
};
Town t = { "Canton" , "Haywood" , 9478 };

What value is stored in t.elevation?

Which of ZnS and CdSe has the larger band gap energy $E_{g}$? Cite reason(s) for your choice.

What does albumin do in the body?

The energy of the n = 2 Bohr orbit is -30.6 eV for an unidentified ionized atom in which only one electron moves about the nucleus. What is the radius of the n = 5 orbit for this species?