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##### 1.Suppose a radioactive substance decays at a rate of 3.5% per hour. a.What percentage of the substance is left after 6 hours?b.What percentage of the substance is left after t hours?

1. Suppose a radioactive substance decays at a rate of 3.5% per hour. a. What percentage of the substance is left after 6 hours? b. What percentage of the substance is left after t hours?...

5 answers

##### In the following table, income units are in thousands of dollars, and each interval goes up to butdoes not include the given high value. The midpoints are given to the nearest thousand dollars.

In the following table, income units are in thousands of dollars, and each interval goes up to but does not include the given high value. The midpoints are given to the nearest thousand dollars....

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##### Equabom fectanjulir coctonbiot Then Idanin, Hno Dudh E Translomm tre Foaf equation l0 [email protected] . 4 crdlo. 11urs ? 6-214 = Ordetdu7 #(+27 64 Gc (Aqus? 6+2/2+ =4 Grcb_ Taddis ? cumlut 4(0,z1in mcnroJar (2 ,0) In reclarqular raclanjular cnnlar at - 7 iintcacoilar coomnalc eneanula conld lGcidQuttuMacBook ProapS lock

equabom fectanjulir coctonbiot Then Idanin, Hno Dudh E Translomm tre Foaf equation l0 = @qudtin 4cosn 20 . 4 crdlo. 11urs ? 6-214 = Ordetdu7 #(+27 64 Gc (Aqus? 6+2/2+ =4 Grcb_ Taddis ? cumlut 4(0,z1in mcnroJar (2 ,0) In reclarqular raclanjular cnnlar at - 7 iintcacoilar coomnalc eneanula conld l Gci...

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##### 21-30. Cartesian to polar . coordinates Evaluate the following inte- grals using polar coordinates Assume (r. 0) are polar coordinates: sketch is helpfulon that21_'Ja: R {(.6:<0240 s0 < 20}22Zyd:R = ((r.0): [272%0 =0 = #/2}23. [(zwvda:R = {(x. v}:LA2.Rm {(r. 0): [ =7= 20 = 0 = 7}dby the

21-30. Cartesian to polar . coordinates Evaluate the following inte- grals using polar coordinates Assume (r. 0) are polar coordinates: sketch is helpful on that 21_ 'Ja: R {(.6:<0240 s0 < 20} 22 Zyd:R = ((r.0): [272%0 =0 = #/2} 23. [(zwvda:R = {(x. v}: LA 2. Rm {(r. 0): [ =7= 20 = 0 = 7}...

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##### Modify the molecule to show the product of the givcn reaetion. Add or remove bonds or at0ms as nceded;SelcctDrawRingsMoreFnseroducing I+ ageni H;c_CH,_C_H

Modify the molecule to show the product of the givcn reaetion. Add or remove bonds or at0ms as nceded; Selcct Draw Rings More Fnse roducing I+ ageni H;c_CH,_C_H...

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##### The thermal conductivity maximum of a synthetic sapphire sample of $3 mathrm{~mm}$ diameter is observed at $30 mathrm{~K}$. The measured maximum value is $2.7 imes 10^{4} mathrm{~W} mathrm{~m}^{-1} mathrm{~K}^{-1}$. If the speed of sound in sapphire is $10^{4} mathrm{~m} mathrm{~s}^{-1}$, calculate the heat capacity of the sapphire at $30 mathrm{~K}$.

The thermal conductivity maximum of a synthetic sapphire sample of $3 mathrm{~mm}$ diameter is observed at $30 mathrm{~K}$. The measured maximum value is $2.7 imes 10^{4} mathrm{~W} mathrm{~m}^{-1} mathrm{~K}^{-1}$. If the speed of sound in sapphire is $10^{4} mathrm{~m} mathrm{~s}^{-1}$, calculate...

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##### Sben that the velocity dh/dt approaches infinity as the Ladder slides down to the gnound (assuming $d x / d r$ is coostant). This stiggesis that our mathematical description is unrealistic. at least for small values of $h$. What would, in fact, happen as the top of the ladder approoches the ground?(a) In which of the four quadrants is the derivutive $d x / d t$ positive? Explain your answer.(b) Find a relation betweea $d x / d t$ and $d y / d t$.(c) At what nate is the $x$ -coordinite changing w

Sben that the velocity dh/dt approaches infinity as the Ladder slides down to the gnound (assuming $d x / d r$ is coostant). This stiggesis that our mathematical description is unrealistic. at least for small values of $h$. What would, in fact, happen as the top of the ladder approoches the ground? ...

5 answers

##### Question 331.25 ptsWhich of the following is evidence of evolution?conserved cmbryonic structuresexistence of the fossil recorduniversality of DNAuniversality of the genetic codeQuestion 341.25 ptsWhich of the following behaviors should NOT occur in the lab?SmokingWearing PPEDrinkingQuestion 351.25 ptsEating

Question 33 1.25 pts Which of the following is evidence of evolution? conserved cmbryonic structures existence of the fossil record universality of DNA universality of the genetic code Question 34 1.25 pts Which of the following behaviors should NOT occur in the lab? Smoking Wearing PPE Drinking Que...

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##### A section of pipe with an internal diameter of $10.0 \mathrm{cm}$ tapers to an inner diameter of $6.00 \mathrm{cm}$ as it rises through a height of $1.70 \mathrm{m}$ at an angle of $60.0^{\circ}$ with respect to the horizontal. The pipe carries water and its higher end is open to air. (a) If the speed of the water at the lower point is $15.0 \mathrm{cm} / \mathrm{s},$ what are the pressure at the lower end and the speed of the water as it exits the pipe? (b) If the higher end of the pipe is $0.3

A section of pipe with an internal diameter of $10.0 \mathrm{cm}$ tapers to an inner diameter of $6.00 \mathrm{cm}$ as it rises through a height of $1.70 \mathrm{m}$ at an angle of $60.0^{\circ}$ with respect to the horizontal. The pipe carries water and its higher end is open to air. (a) If the spe...

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##### The fovea________.a. is a blind spotb. adjusts the amount of light entering the eyec. integrates signals from many rod cellsd. has a dense concentration of cone cells

The fovea________. a. is a blind spot b. adjusts the amount of light entering the eye c. integrates signals from many rod cells d. has a dense concentration of cone cells...

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##### Explain how a strong acid is similar to a strong reducing agent. Explain how a strong base compares with a strong oxidizing agent.

Explain how a strong acid is similar to a strong reducing agent. Explain how a strong base compares with a strong oxidizing agent....

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##### Using the bond energies listed in Table 8.4, calculate AH for the reaction of methane with chlorine and fluorine to give Freon-12 (CF,Cl) CH_(g) + 2Cl,(g) + 2Fz(g) CF,Cl,(g) + 2HFlg) + 2HCI(g)

Using the bond energies listed in Table 8.4, calculate AH for the reaction of methane with chlorine and fluorine to give Freon-12 (CF,Cl) CH_(g) + 2Cl,(g) + 2Fz(g) CF,Cl,(g) + 2HFlg) + 2HCI(g)...

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##### Question 141ptsThe homogeneous equation with constant coefficients that has y (2) = Ae-2r + B re-2r + C cos (2x) + D sin (2x) + E as its general solution isnone3(6) +494 _8y" _ 164" _ 16y' = 0 3{5) 4 4y4 -8y" + 16 y"' _ 16 y = 0 4(6) T y4) + 8/" + [6y" _ 16 y = 0

Question 14 1pts The homogeneous equation with constant coefficients that has y (2) = Ae-2r + B re-2r + C cos (2x) + D sin (2x) + E as its general solution is none 3(6) +494 _8y" _ 164" _ 16y' = 0 3{5) 4 4y4 -8y" + 16 y"' _ 16 y = 0 4(6) T y4) + 8/" + [6y" _ 1...

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##### Braking Distance Problem: The length of skid marks, $d(x)$ feet, left by a car braking to a stop is a direct square power function of $x,$ the speed in miles per hour when the brakes were applied. Based on information in the Texas Drivers Handbook $(1997), d(x)$ is given approximately by $d(x)=0.057 x^{2}$ for $x \geq 0$ a. When police officers investigate automobile accidents, they use the length of the skid marks to calculate the speed of the car at the time it started to brake. Write an equat

Braking Distance Problem: The length of skid marks, $d(x)$ feet, left by a car braking to a stop is a direct square power function of $x,$ the speed in miles per hour when the brakes were applied. Based on information in the Texas Drivers Handbook $(1997), d(x)$ is given approximately by $d(x)=0.057...

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Feahede ncanVAletDx tbe 4 SALT Founo Ycur Tunne decma Teluna Conomeon Problem contu We f24 to rejea /o; We convindno cviccrt tuttha mcan nlmbst Jm nchtneniater Datadatham Qam*E Eehicht did no "e rejcc Ko' rattalr convincina cricence tnat me meen Mu" Jer Gaulg ccorce hicnee namtt plnte...

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##### (a) Describe the line whose symmetric equations are$$rac{x-1}{2}=rac{y+3}{4}=z-5$$(see Exercise 52 ).(b) Find parametric equations for the line in part (a).

(a) Describe the line whose symmetric equations are $$ \frac{x-1}{2}=\frac{y+3}{4}=z-5 $$ (see Exercise 52 ). (b) Find parametric equations for the line in part (a)....

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##### 0.40 L of wateris added to 1.6 L of0.25 M CoCl2 solution(hint: "added" is italicized for a reason).What is the molarity of the diluted solution? Answer in mol/L. Do not use scientific notation. Do not typeunits.

0.40 L of water is added to 1.6 L of 0.25 M CoCl2 solution (hint: "added" is italicized for a reason). What is the molarity of the diluted solution? Answer in mol/L. Do not use scientific notation. Do not type units....

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##### QUESTiONGrrnine lala nno NdAtncicnP(t ) =2v27+8Dcminoipil Inenval nolaiicn In Ihe sp8c2 belo Your ana -er shcum svnmmertln 8n7-8r netveanan chara Ders Use Ine expression Inf Gnncld ccrilih [orIne OlistacMean Ininine amde Meou v are antingretrerertInenimbars Voucoud surmn Youare er(l +inl) You muat indicata -infversus ~inf lo

QUESTiON Grrnine lala nno NdAtncicn P(t ) =2v27+8 Dcminoipil Inenval nolaiicn In Ihe sp8c2 belo Your ana -er shcum svnmmertln 8n7-8r netveanan chara Ders Use Ine expression Inf Gnncld ccrilih [orIne Olistac Mean Ininin e amde Meou v are anting retrerertIne nimbars Voucoud surmn Youare er (l +inl) Y...

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##### Find the exponential function (x) = Ab x (b> 0) whose graph is given (Result to two decimal places)Where A =and b =(2,16)(0.1)1

Find the exponential function (x) = Ab x (b> 0) whose graph is given (Result to two decimal places) Where A = and b = (2,16) (0.1) 1...

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##### Find the slope of the line containing the given points.(2,-9};(-4,8)Select one:77b; "("d; -

Find the slope of the line containing the given points. (2,-9};(-4,8) Select one: 77 b; " ( " d; -...

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##### Tr9Jr learn ejust org36 UmniahTime left 1:36:57Question 13Not yet answeredMarked out of 2.00Flag questionEvaluate the line integral Sl+z) ds along the curve â‚¬ given by 7() = (~2sint; ~Zcost) , 0 <tsT.-8Loli

Tr9 Jr learn ejust org 36 Umniah Time left 1:36:57 Question 13 Not yet answered Marked out of 2.00 Flag question Evaluate the line integral Sl+z) ds along the curve â‚¬ given by 7() = (~2sint; ~Zcost) , 0 <tsT. -8 Loli...

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##### Use the compound interest (ormula compule the total amount accumulaled 15) *500 for 5 rears compoundedd monthly A1S5/94.48 B) S18,962.96 Q) $44575.50DI $1395.59Use the Pretene value formula to delermine the amount to be invested now;or the present value needed: 16) Tl desired accumulatedl amount is S7000 After I0 yeurs inestevl aocount Ivith 392 intenest compounded qanterhy. A1S1808.46 B) 59438 M 0) $5191.4 DJ 55208.66

Use the compound interest (ormula compule the total amount accumulaled 15) *500 for 5 rears compoundedd monthly A1S5/94.48 B) S18,962.96 Q) $44575.50 DI $1395.59 Use the Pretene value formula to delermine the amount to be invested now;or the present value needed: 16) Tl desired accumulatedl amount i...