## Question

###### Newton's Law of Cooling A thermometer reading $72^{\circ} \mathrm{F}$ is placed in a refrigerator where the temperature is a constant $38^{\circ} \mathrm{F}$ (a) If the thermometer reads $60^{\circ} \mathrm{F}$ after 2 minutes, what will it read after 7 minutes? (b) How long will it take before the thermometer reads $39^{\circ} \mathrm{F} ?$ (c) Determine the time that must elapse before the thermometer reads $45^{\circ} \mathrm{F}$. (d) What do you notice about the temperature as time pass

Newton's Law of Cooling A thermometer reading $72^{\circ} \mathrm{F}$ is placed in a refrigerator where the temperature is a constant $38^{\circ} \mathrm{F}$ (a) If the thermometer reads $60^{\circ} \mathrm{F}$ after 2 minutes, what will it read after 7 minutes? (b) How long will it take before the thermometer reads $39^{\circ} \mathrm{F} ?$ (c) Determine the time that must elapse before the thermometer reads $45^{\circ} \mathrm{F}$. (d) What do you notice about the temperature as time passes?

## Answers

#### Similar Solved Questions

5 answers

##### Compute volume of solid W bounded by given surfaces:Example 370: Compute both mass and â‚¬-coordinate of center of mass of solid bounded by planes y = 2 = 0 I + y + 2 = having mass density p(T,y, 2) = 1_Example 371: Find center of mass of solid bounded by surfaces density p(x,y,2)22 + y} , 2 = 2 with mass

Compute volume of solid W bounded by given surfaces: Example 370: Compute both mass and â‚¬-coordinate of center of mass of solid bounded by planes y = 2 = 0 I + y + 2 = having mass density p(T,y, 2) = 1_ Example 371: Find center of mass of solid bounded by surfaces density p(x,y,2) 22 + y} , 2 ...

5 answers

##### Estimated that only 30% of residents %f California have adequate You randomly survey 11 California residents earthquake supplies. residents have adequate earthquake What is the probability that supplies? most residents have adequate b) What the probability that earthquake supplies?

estimated that only 30% of residents %f California have adequate You randomly survey 11 California residents earthquake supplies. residents have adequate earthquake What is the probability that supplies? most residents have adequate b) What the probability that earthquake supplies?...

5 answers

##### 2 The following numbers constitute & random sample from & normal dis- tribution with an unknown mean and unknown variance 02: 15.0 19.1 16.6 20.4 13.5(a) Test at the 5% significance level Ho p = 15 against Ha p > 15. Again, do the problem in two ways- first by obtaining the rejection region and second, by using the p-value. (b) Suppose we have another random sample from & normal distribu- tion with an unknown mean and unknown variance 02 13.0 19.4 18 20.2 Test Ho o2 = 02 against H

2 The following numbers constitute & random sample from & normal dis- tribution with an unknown mean and unknown variance 02: 15.0 19.1 16.6 20.4 13.5 (a) Test at the 5% significance level Ho p = 15 against Ha p > 15. Again, do the problem in two ways- first by obtaining the rejection reg...

5 answers

##### Home My ClassesUser Settings | Log " Out GradebookumsCalendar2020 AssessmentThis assignment is past theUse half angle formulas to fill in the blanks in the identity below:(sin(32))4cos(cos(Get help: Worked ExamplePoints possible: This is attempt of 4.Submit

Home My Classes User Settings | Log " Out Gradebook ums Calendar 2020 Assessment This assignment is past the Use half angle formulas to fill in the blanks in the identity below: (sin(32))4 cos( cos( Get help: Worked Example Points possible: This is attempt of 4. Submit...

5 answers

##### DATA:ength of the Spring: Lo= 0.138 m TrialsReal Constant: 10_ NmTable Hooke' LawMass0.1000.1500.2000.25003000350m(kE)Force 0nl thle 0.931 Spring FN)1.47159622445152.9433.4335Length Lfi)0.2100.253031003600.4070.457Increase in Length JL ()0.0720.1170.1720.2220.2690319Table II: OscillationTrialsMass n(k?) 0.1000.1502000.2500300350A(m)0.02480.01ss0.03060.03310.03120.0682B(rad $)9.506.175.655.25C(rad)3.290353574.71I(s)0350.04367205790.708f (Hz)2.362221.7271.41211

DATA: ength of the Spring: Lo= 0.138 m Trials Real Constant: 10_ Nm Table Hooke' Law Mass 0.100 0.150 0.200 0.250 0300 0350 m(kE) Force 0nl thle 0.931 Spring FN) 1.4715 962 244515 2.943 3.4335 Length Lfi) 0.210 0.253 0310 0360 0.407 0.457 Increase in Length JL () 0.072 0.117 0.172 0.222 0.269 0...

5 answers

##### 10.5 ptsQuestion ?JAC with maximum voltage of 9 volts is connected in series to a resistor of 6 Ohms,an 3) An scurce inductorof 4 mH,and acapacitor of 10 micro-farads What is the capacitive reactance,in Ohms,at 4 kHz?10.5 ptsQuestion4) An AC source with maximum voltage of 14 volts is connected in series to resistor of 6 Ohms, an inductor of = mH;and capacitor of micro- faradsWhat is the total impedance; in Ohms at kHz?

10.5 pts Question ? JAC with maximum voltage of 9 volts is connected in series to a resistor of 6 Ohms,an 3) An scurce inductorof 4 mH,and acapacitor of 10 micro-farads What is the capacitive reactance,in Ohms,at 4 kHz? 10.5 pts Question 4) An AC source with maximum voltage of 14 volts is connected ...

5 answers

##### Problem H-3 HB 302PV/FV Amount Problems How much must be invested today have $1,000 in two years if the interest rate 5907At an effective interest rate of 878, an amount invested will double itsell inyears.Your investment balance S10,000. Three years Jgo you invested $7,938 and have not touched the investment since- What compound annual rate of interest have You earned?If you invest the S10,000 you receive at graduation in mutual fund which averages 125 annua return how much will have forty year

Problem H-3 HB 302 PV/FV Amount Problems How much must be invested today have $1,000 in two years if the interest rate 5907 At an effective interest rate of 878, an amount invested will double itsell in years. Your investment balance S10,000. Three years Jgo you invested $7,938 and have not touched ...

3 answers

##### The amounts of polyethylene glycol 400 shown in Table 2.1 were each weighed into conical flask and mL of benzyl benzoate added by pipette to each flask The contents were mixed thoroughly by swirling the flask:The contents of each flask were titrated with distilled water; mixing the solution thoroughly after each addition of water: The end-point was observed as development of turbidity which persisted for minute3. The volumes of water used in each titration are recorded in Table 2.1. Calculate th

The amounts of polyethylene glycol 400 shown in Table 2.1 were each weighed into conical flask and mL of benzyl benzoate added by pipette to each flask The contents were mixed thoroughly by swirling the flask: The contents of each flask were titrated with distilled water; mixing the solution thoroug...

5 answers

##### The following kinetic data (Vo is the initial rate) were obtained for the reaction 2 ICIle) Hzlg) ~ Iz(g) 2 HCI(g}: (ICIJo (mmolL Y) [Hl (mmolL ) Vo (mol L ! s ) Experiment 1.5 1.5 3.7*10 ' 1.5 74*107 3.0 4.5 22*107 3.0 4.7 2.7(a) Write the rate law for the reaction: (b) From the data, determine the value of the rate constant: (c) Use the data to predict the reaction rate for experiment =Answer: (a)(b)(c)

The following kinetic data (Vo is the initial rate) were obtained for the reaction 2 ICIle) Hzlg) ~ Iz(g) 2 HCI(g}: (ICIJo (mmolL Y) [Hl (mmolL ) Vo (mol L ! s ) Experiment 1.5 1.5 3.7*10 ' 1.5 74*107 3.0 4.5 22*107 3.0 4.7 2.7 (a) Write the rate law for the reaction: (b) From the data, determi...

5 answers

##### Question 32You currently work with biosafety level- organism named at home. Lassa lever virusSalmonellaBacillus0d 2, Colibaker $ yeastNonaJnolner olesliorcrconsE HmantTypc here {calanW2 "XaCVBN:

Question 32 You currently work with biosafety level- organism named at home. Lassa lever virus Salmonella Bacillus 0d 2, Coli baker $ yeast Nona Jnolner oleslior crcons E Hmant Typc here {calan W 2 " Xa C V B N:...

5 answers

##### Solve the following equations_(a) 3 cos22x 4 sin22x 15 cos 2xin the interval 0" < X < 3609(b) 3 sin 3X - V3 cos 3x = 0in the interval 0" < X < 1808(3)

Solve the following equations_ (a) 3 cos22x 4 sin22x 15 cos 2x in the interval 0" < X < 3609 (b) 3 sin 3X - V3 cos 3x = 0 in the interval 0" < X < 1808 (3)...

5 answers

##### Identify each of the following as an element or a compound:(a) $mathrm{NH}_{3}$(b) $mathrm{N}_{2}$(c) $mathrm{S}_{8}$(d) NO(e) $mathrm{H}_{2}$(f) $mathrm{CO}$(g) $mathrm{P}_{4}$(h) $mathrm{H}_{2} mathrm{O}$

Identify each of the following as an element or a compound: (a) $mathrm{NH}_{3}$ (b) $mathrm{N}_{2}$ (c) $mathrm{S}_{8}$ (d) NO (e) $mathrm{H}_{2}$ (f) $mathrm{CO}$ (g) $mathrm{P}_{4}$ (h) $mathrm{H}_{2} mathrm{O}$...

5 answers

##### View policies Current Attempt in Progress Two blocks are in contacton a frictionless table A horizontal F kg, mz 1.3kg, and F = 2.7 N, find the force is applied to the larger - block: magnitude of the force as shown in the figure: (a) Ufmi =21 between the two blocks. (b) magnitude Fis applied to the smaller block but in the opposite Assume ' instead that a force of the same blocks. (Why is the direction, and calculate the magnitude of the force between the value calculated in (b) not the s

View policies Current Attempt in Progress Two blocks are in contacton a frictionless table A horizontal F kg, mz 1.3kg, and F = 2.7 N, find the force is applied to the larger - block: magnitude of the force as shown in the figure: (a) Ufmi =21 between the two blocks. (b) magnitude Fis applied to th...

5 answers

##### Ltd = I(e) be $ functon thst outputs the dstance J â‚¬ hrs trkd i mefers 8 dme & I srondh Ciua dI 0l the tollowing thst hJve {hc SJ Mning * [ (0) = 4 Thate mvbe more then n eturt:Temurkd 4 Mtcuty IronMGntrt"rdendea eronmu#tmatotttdI6)"-6"TetdrGttgrtI6) 4o?MFueetl eonadorrdaene

Ltd = I(e) be $ functon thst outputs the dstance J â‚¬ hrs trkd i mefers 8 dme & I srondh Ciua dI 0l the tollowing thst hJve {hc SJ Mning * [ (0) = 4 Thate mvbe more then n eturt: Temurkd 4 Mtcuty Iron MGntrt"rde ndea eron mu#tmatotttd I6)"-6" Tetdr Gttgrt I6) 4o? M Fueetl eo...

5 answers

##### A total of five 21-sided dice are rolled where the faces are numbers through 21 each equally likely: The four lowest values among the dice are summed: What is the expected value of the result?Round your answer t0 four decimaLplaces:

A total of five 21-sided dice are rolled where the faces are numbers through 21 each equally likely: The four lowest values among the dice are summed: What is the expected value of the result? Round your answer t0 four decimaLplaces:...

1 answers

##### For each plane curve, (a) graph the curve, and (b) find a rectangular equation for the curve. $x=2 \sin t, y=2 \cos t$ for $t$ in $[0,2 \pi]$

For each plane curve, (a) graph the curve, and (b) find a rectangular equation for the curve. $x=2 \sin t, y=2 \cos t$ for $t$ in $[0,2 \pi]$...

1 answers

##### Solve each system using the Gauss-Jordan elimination method. $$ \begin{array}{r} x+y+z=5 \\ x-y-z=8 \\ -x+y+z=2 \end{array} $$

Solve each system using the Gauss-Jordan elimination method. $$ \begin{array}{r} x+y+z=5 \\ x-y-z=8 \\ -x+y+z=2 \end{array} $$...

5 answers

##### 178 a) 5 slug-ft 2 b) 0.25 & from center along spoke 12 4.9 radls d) 18 Ib upward e) 23.8 Ib upward Ftan 16.8 [b, Fr = 12.8 Ib (towards center)

178 a) 5 slug-ft 2 b) 0.25 & from center along spoke 12 4.9 radls d) 18 Ib upward e) 23.8 Ib upward Ftan 16.8 [b, Fr = 12.8 Ib (towards center)...

5 answers

##### Lab math problem: Show the steps for full credit!How many grams of sucrose (molecular welght 342 g/ mol) would You dissolve in water to make a 0.6 M sucrose solution with 5O0 mL final volume?

Lab math problem: Show the steps for full credit! How many grams of sucrose (molecular welght 342 g/ mol) would You dissolve in water to make a 0.6 M sucrose solution with 5O0 mL final volume?...

5 answers

##### Find the present value of the income (in dollars) overyears at the given annual inflation rate r. (Round your answer to two decimal places:)26,000 soot,70/ ,Years

Find the present value of the income (in dollars) over years at the given annual inflation rate r. (Round your answer to two decimal places:) 26,000 soot, 70/ , Years...