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Patrick Canary

Patrick C.

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Tianyu Li verified

Numerade educator

Answer the following questions using data from Table 2.3. Challenge Based on percent error, which student's trial was the most accurate? The least accurate?

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Paul Gabriel verified

Numerade educator

A sailor strikes the side of his ship just below the waterline. He hears the echo of the sound reflected from the ocean floor directly below 2.0 s later. How deep is the ocean at this point? Assume the speed of sound in sea water is 1560 m$/$s (Table 12$-$1) and does not vary significantly with depth.

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Umar Sohail Qureshi verified

Numerade educator

The professor returns the apparatus to the original setting. She then adjusts the speakers again. All of the students who had heard nothing originally now hear a loud tone, while you and the others who had originally heard the loud tone hear nothing. What did the professor do? (a) She turned off the oscillator. (b) She turned down the volume of the speakers. (c) She changed the phase relationship of the speakers. (d) She disconnected one speaker.

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Darshan Maheshwari verified

Numerade educator

The probability an event A happens is 0.37 a) What is the probability that it does not happen? b) What is the probability that it may or may not happen?

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Nicole Smina verified

Numerade educator

Determine the empirical formulas of the compounds with the following compositions by mass: $$ \begin{array}{l}{\text { (a) } 55.3 \% \mathrm{K}, 14.6 \% \mathrm{P}, \text { and } 30.1 \% \mathrm{O}} \\ {\text { (b) } 24.5 \% \mathrm{Na}, 14.9 \% \mathrm{Si}, \text { and } 60.6 \% \mathrm{F}} \\ {\text { (c) } 62.1 \% \mathrm{C}, 5.21 \% \mathrm{H}, 12.1 \% \mathrm{N}, \text { and the remainder O }}\end{array} $$

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Darshan Maheshwari verified

Numerade educator

Predict/Calculate A point charge $q=+4.7 \mu \mathrm{C}$ is placed at each corner of an equilateral triangle with sides 0.21 $\mathrm{m}$ in length. (a) What is the magnitude of the electric field at the midpoint of any of the three sides of the triangle? (b) Is the magnitude of the electric field at the center of the triangle greater than, less than, or the same as the magnitude at the midpoint of a side? Explain.

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Jennifer Hudspeth verified

Numerade educator

Based on their positions in the periodic table, predict which has the smallest atomic radius: Mg, Sr, Si, Cl, I.

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Hubert Agamasu verified

Numerade educator

B1O Spiderweb Forces An orb-weaver spider sits in her web that is supported by three radial strands, as shown in FIGURE$6-47 .$ Assume that only the radial strands contribute to supporting the weight of the spider. If the mass of the spider is $5.2 \times 10^{-4} \mathrm{kg}$ , and the radial strands are all under the same tension, find the magnitude of the tension, $T .$

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Prabhat Tyagi verified

Numerade educator

(II) Make a rough estimate, for a typical suburban house, of the $\%$ of its outside wall area that consists of window area.

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Teresa Fuston verified

Numerade educator

In Exercises 7–10, find the value of $x$ or $y$ so that the line through the pair of points has the given slope. $$\begin{array}{ll}{\text { Points }} & {\text { Slope }} \\ {(-8,-2) \text { and }(x, 2)} & {m=1/2}\end{array}$$

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