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Amber Harris

Amber H.

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Questions asked

INSTANT ANSWER

Suppose $U$ is a subspace of $V .$ What is $U+U ?$

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ANSWERED

Jennifer Hudspeth verified

Numerade educator

If $4.61 \times 10^{21}$ atoms of element $Z$ have a mass of 0.815 g, what is the identity of $Z ?$

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ANSWERED

Paul Gabriel verified

Numerade educator

During a tug-of-war, team A pulls on team B by applying a force of 1100 N to the rope between them. The rope remains parallel to the ground. How much work does team A do if they pull team B toward them a distance of 2.0 m?

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ANSWERED

Umar Sohail Qureshi verified

Numerade educator

Two uniformly charged, infinite, nonconducting planes are parallel to a $y z$ plane and positioned at $x=-50 \mathrm{cm}$ and $x=+50$ $\mathrm{cm} .$ The charge densities on the planes are $-50 \mathrm{nC} / \mathrm{m}^{2}$ and $+25$ $\mathrm{nC/m}^{2},$ respectively. What is the magnitude of the potential difference between the origin and the point on the $x$ axis at $x=+80 \mathrm{cm}$ ? (Hint: Use Gauss' law.)

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ANSWERED

Jennifer Hudspeth verified

Numerade educator

Give the balanced equation for each of the following chemical reactions: a. Glucose $\left(\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}\right)$ reacts with oxygen gas to produce gaseous carbon dioxide and water vapor. b. Solid iron(III) sulfide reacts with gaseous hydrogen chloride to form solid iron((III) chloride and hydrogen sulfide gas. c. Carbon disulfide liquid reacts with ammonia gas to produce hydrogen sulfide gas and solid ammonium thiocyanate $\left(\mathrm{NH}_{4} \mathrm{SCN}\right)$

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ANSWERED

Babita Kumari verified

Numerade educator

The magnitude of the electrostatic force between two identical ions that are separated by a distance of $5.0 \times 10^{-10} \mathrm{m}$ is $3.7 \times 10^{-9}$ $\mathrm{N} .(\mathrm{a})$ What is the charge of each ion? (b) How many electrons are "missing" from each ion (thus giving the ion its charge imbalance)?

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ANSWERED

Satyam Gupta verified

Numerade educator

Find the lines that are (a) tangent and (b) normal to the curve $y=x^{3}$ at the point $(1,1)$ .

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ANSWERED

Nipun Perera verified

Numerade educator

A uniform narrow tube 1.70 m long is open at both ends. It resonates at two successive harmonics of frequencies 275 Hz and 330 Hz.What is ($a$) the fundamental frequency, and ($b$) the speed of sound in the gas in the tube?

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INSTANT ANSWER

This table displays the vapor pressure of ammonia at several different temperatures. Use the data to determine the heat of vaporization and normal boiling point of ammonia.

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INSTANT ANSWER

Consider the data presented in Exercise 14.19 . (a) By using appropriate graphs, determine whether the reaction is first order or second order. (b) What is the rate constant for the reaction? (c) What is the half-life for the reaction?

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