What is the speed of an electron with kinetic energy

Probability and Statistical Inference 9
Nicol (see References) lets the pdf of \(X\) be defined by \(f(x)= \begin{cases}x, & 0 \leq x \leq 1 \\ c / x^{3}, & 1 \leq x<\infty \\ 0, & \text { elsewhere }\end{cases}\) Find (a) The value of \(c\) so that \(f(x)\) is a pdf. (b) The mean of \(X\) (if it exists). (c) The variance of \(

Organic Chemistry 7
Problem 21P For each of the following compounds, indicate the aldehyde or ketone from which it would be formed by an aldol addition: a. 2-ethyl-3-hydroxyhexanal b. 4-hydroxy-4-methyl-2-pentanone c. 2,4-dicyclohexyl-3-hydroxybutanal d. 5-ethyl-5-hydroxy-4-mcthyl-3-heptanone

Sears and Zemansky's University Physics with Modern Physics 13
A narrow, U-shaped glass tube with open ends is filled with \(25.0 \mathrm{~cm}\) of oil (of specific gravity 0.80) and \(25.0 \mathrm{~cm}\) of water on opposite sides, with a barrier separating the liquids (Fig. P12.58). (a) Assume that the two liquids do not mix, and find the final heights of the

Biology 8
Herbivory (plant-eating) has evolved repeatedly in insects, typically from meat-eating or detritus-feeding ancestors (detritus is dead organic matter). Moths and butterflies, for example, eat plants. whereas their "sister group" (the insect group to which they are most closely related), the caddisfli

Physics for Scientists and Engineers with Modern Physics 9
Consider the mass spectrometer shown schematically in Figure 29.14. The magnitude of the electric field between the plates of the velocity selector is 2.50 3 103 V/m, and the magnetic field in both the velocity selector and the deflection chamber has a magnitude of 0.035 0 T. Calculate the radius of

Principles of Accounting, Volume 1: Financial Accounting
The Dow Jones Industrial Average (DJIA) is often cited as a key metric for business activity. The average is a mathematical formula that uses the stock prices of thirty companies traded on the New York Stock Exchange (NYSE) and the National Association of Securities Dealers Automated Quotation (NASDA

Principles of Accounting, Volume 1: Financial Accounting
Which of these accounts commonly requires both debit and credit entries? A. Sales Revenue B. Utilities Expense C. Accounts Receivable D. Common Stock

Chemistry for today : general, organic, and biochemistry 9
Calculate the molar concentration of \(\mathrm{OH}^{-}\) in water solutions with the following \(\mathrm{H}_{3} \mathrm{O}^{+}\) molar concentrations: a. 0.044 b. \(1.3 \times 10^{-4}\) c. 0.0087 d. \(7.9 \times 10^{-10}\) e. \(3.3 \times 10^{-2}\)