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Robert Weber

Robert W.

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C D verified

Numerade educator

A coil of Nichrome wire is 25.0 $\mathrm{m}$ long. The wire has a diameter of 0.400 $\mathrm{mm}$ and is at $20.0^{\circ} \mathrm{C}$ . If it carries a current of 0.500 $\mathrm{A}$ , what are (a) the magnitude of the electric field in the wire, and (b) the power delivered to it? (c) What If? If the temperature is increased to $340^{\circ} \mathrm{C}$ and the voltage across the wire remains constant, what is the power delivered?

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Satyam Gupta verified

Numerade educator

In Exercises $5-8,$ use the definition $f^{\prime}(a)=\lim _{x \rightarrow a} \frac{f(x)-f(a)}{x-a}$ to find the derivative of the given function at the indicated point. $$f(x)=\sqrt{x+1}, a=3$$

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Prabhat Tyagi verified

Numerade educator

Explain why resources are not always mobile and willing to move.

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Jennifer Hudspeth verified

Numerade educator

Which orbital in each of the following pairs is higher in energy? (a) 5$p$ or 5$d$ (b) 4$s$ or 3$p$ (c) 6$s$ or 4$d$

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INSTANT ANSWER

Confirm the partialling out interpretation of the OLS estimates by explicitly doing the partialling out for Example $3.2 .$ This first requires regressing educ on exper and tenure and saving the residuals, $\hat{r}_{1}$ .Then, regress log(wage) on $\hat{r}_{1}$ . Compare the coefficient on $\hat{r}_{1}$ with the coefficient on educ in the regression of log(wage) on educ, exper, and tenure.

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Rosina Dapaah verified

Numerade educator

If eight basketball teams are in a tournament, find the number of different ways that first, second, and third place can be decided, assuming ties are not allowed.

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Babita Kumari verified

Numerade educator

Testing for Functions Represented Algebraically In Exercises $11-20$ , determine whether the equation represents $y$ as a function of $x .$ $$2 x+3 y=4$$

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Hubert Agamasu verified

Numerade educator

A spring $A B$ is attached to a support at $A$ and to a collar. The unstretched length of the spring is $l .$ Knowing that the collar is released from rest at $x=x_{0}$ and has an acceleration defined by the relation $a=-100(x-l x / \sqrt{l^{2}+x^{2}}),$ determine the velocity of the collar as it passes through point $C .$

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C D verified

Numerade educator

Minimum Area A rectangular page is to contain 30 square inches of print. The margins on each side are 1 inch. Find the dimensions of the page such the least amount of paper is used.

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ANSWERED

Hubert Agamasu verified

Numerade educator

thoughtful preservation of content and checking for artifacts.

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