Numerade

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two positive charges and one negative charge, all of magnitude Q, are arranged at the vertices of an equilateral triangle. three students are trying to determine the sign of the potential energy of this collection of charges, and they come up with three different arguments. which of their argument sis correct

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According to Stephens, the problem with retail today is that store locations, designs, formats, operating hours and revenue models have all been built on an industrial foundation that is now crumbling in the digital era. Group of answer choices True False

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The ______ nervous system includes sensory receptors and nerves. spinal central All answers are correct efferent peripheral

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The socially efficient level of production occurs where the marginal cost curve intersects which of the following curves?

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Draw the shear diagram for the cantilever beam between the lines. Note 1 - Make sure you place only one vertical line at places that require a vertical line. If you inadvertently place two vertical lines at the same place, it will appear correct visually because the lines overlap, but the system will mark it wrong. Note 2 - You should not draw an "extra" vertical line at the location of applied moment. 501 lb 60 lb/ft 4 ft 8 ft No elements selected V(lb) 100 75 50 25 0 x(ft) 10 25 50 75

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3. Suppose a random variable X has the uniform distribution on the interval (0, 1). Derive the p.d.f.s and determine (recognize) the distributions of $\text{-} \ln(X)$ and $\text{-} \ln(1 \text{-} X)$.

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Consider the random variables X and Y with the joint density function shown to the right. (a) Find the marginal distributions of X and Y (b) Find P(X>3.4, Y>0.3). $\begin{cases} \frac{1}{35}x + \frac{1}{35}y, & 0 \le x \le 5, 0 \le y \le 2\\ 0, & \text{elsewhere} \end{cases}$ (a) Select the correct choice below and fill in the answer box to complete your choice. A. The marginal distribution of X is g(x)=\boxed{\text{ }}, for 0 ?y?2. B. The marginal distribution of X is g(x) = \boxed{\text{ }}, for 0?x?5.

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Texts: Evaluate the definite integrals using properties of the definite integral and the fact that ∫fxdx = - ∫fxdx = 7, and ∫gxdx = 2 (a) ∫9fxdx = Number (b) ∫fxdx = Number (c) ∫f-gxdx = Number (d) ∫3fx+4gd = Number

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PROBLEM III (10 points) Show that if $x(n) = 0$ for $n \le 2$, Then, $x(n) \leftrightarrow X(z)$ implies that $x(n + 3) \leftrightarrow z^{-3}X(z)$ (10 points)

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Question 5 Chelsea consumes two goods, x and y. Her utility function over x and y is given by: $U(x,y) = 4x + y^{0.8}$ The price of good x is $13. The price of good y is $3. Chelsea has an income of 193. If Chelsea is utility maximizing, what would be her optimal quantity of x to consume? Enter your answer to two decimal places. (For example, 12.34) 6 pts

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michelle c.