1. A siliver bullet used to kill vampires in the late 19th century was found to be suspended in a constant temperature enclosure. It is found that the silver bullet's tempearture cools from 100°C to 90°c in 5 minutes and 82°C in the next five minutes. Calculate the temperature of the enclosure.

Q: 3. A plastic of warm water with a temperature of 110°F is placed inside a 0°F freezer. After 20…

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Q: According to estimates, the global emissions of CO2 in the energy sector will total about 36 billion…

A: Given that the amount of CO2 emissions in the energy sector in 2020 is about 36 billion metric tons.…

Q: 3. A small metal bar, whose initial temperature was 20° C, is dropped into a large container of…

A: Let's find.

Q: 2. It takes 12 minutes for an object at 100°C to cool to 80°C in a room at 50°C. how much longer…

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Q: Number of bacteria in a rapidly growing culture was estimated to be 10,000 at noon, 40,000 after…

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Q: *3.1 Determine the t-value for Eso-

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: 2. A body at 100°C warms at 120ºC after 5 minutes in a surrounding at 30°C. At what time will its…

A: Given- T0=100°C,Ts=30°C ,T=120°C To Find- The time at the temperature of the body will be double.…

Q: A vehicle purchased for $32,500 depreciates at a constant rate of 5% per year. Determine the…

A: purchased cost of vehicle=$32,500Rate of depreciation=55 per yearNumber of years after purchased =10…

Q: 4. The average range of frequencies at which human beings can hear sound waves varies from 20 Hz to…

A: For a sound wave, Speed = Wavelength x Frequency  ν = λ x f  Given that the speed of sound in air =…

Q: 3. The rate at which radioactive nuclei decay is proportional to the number of such nuclei that are…

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Q: A small metal bar, whose initial temperature is 25°C'is dropped into a large container of boiling…

A: Given that :- Initial Temperature of Metal Bar=25°C Temperature of boiling water=100°C How long will…

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A: The standard equation for first order kinetic reaction is given by lnC=lnC0-kt. In this equation k…

Q: 3) A certain radioactive material loses mass at a rate proportional to the mass present. If the…

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Q: During a certain 21-hour period, the temperature at time t (measured in hours from the start of the…

A: During a certain 21-hour period, the temperature at time t (measured in hours from the start of the…

Q: Consider an object in a surrounding with constant temperature of 25°C. If the temperature of the…

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Q: If a sample of a certain solution is determined to have a H30*| concentration of 9.87 x 10-…

A: NOTE: Refresh your page if you can't see any equations. . here the given concentration is

Q: If the rate of inflation averages r per annum over n years, the amount A that $P will purchase after…

A: We are authorized to solve only one question, please repost remaining questions Rate of inflation

Q: Consider an object in a surrounding with constant temperature of 25°C. If the emperature of the…

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Q: Suppose that in Winter the daytime temperature in a certain office building is maintained at 70° F.…

A: here we will newtons law of cooling  Rate  at which temperature of tea changes follow newton's law…

Q: 3.Divers swimming at 7 meters below the surface found that the light level was 83% that of the…

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Q: 7. The table below gives the power consumption in megawatts (MW) in San Diego County from midnight…

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Q: A room in a certain factory wanted to improve the CO₂ concentration level which is a high 2500ppm.…

A: The air inside has 2500 ppm of CO2 and volume of 5000 cu.m  Fresh Air has 400 ppm of CO2    Now, let…

Q: Temperature has only one scale. O True False

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Q: If one earthquake has a magnitude of 5 on the Richter scale and a second earthquake has a magnitude…

A: We have to determine the relationship between the intensities of the two earthquakes .

Q: Consider an object in a surrounding with constant temperature of . If the temperature of the object…

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Q: A metal sphere cools from 60°C to 50°C in 5 minutes. How much more time (in minutes) will it take to…

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Q: Suppose you are a pharmacist and a customer asks you thefollowing question. His child is to receive…

A: Given: Total nausea medicine received by child=13.5 mlTotal time period=54 hours To Find: The amount…

Q: 1) For a period of time, an island's population grows at a rate proportional to its population. If…

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Q: 2. A dosage of Q units of a certain drug is administered to an individual every four hours. Assume…

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Q: 1. The rate at which radioactive nuclei decay is proportional to the number of such nuclei that are…

A: Since you have posted a multiple question according to guildlines I will solve first question for…

Q: 1. a) A car is driving toward an intersection from the east at 40 mi/h, and a second car is driving…

A: Here the two cars are approaching each other at right angles with different speeds. Therefore the…

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A: We know that PH value of [H3O+] concentration is given by PH= -log([H3O+]) . where [H3O+]…

Q: A body of unknown temperature is placed in a refrigerator at a constant temperature of 0° F. If…

A: Given:- A body of unknown temperature is placed in a refrigerator at a constant temperature of 0° F.…

Q: The temperature in Vancouver was 8◦C at 6 am and rose to 20◦C at noon. Which assumption about…

A: Temperature is a continuous function.  We can write the temperature(T) as a function of time(t).…

Q: The flash point of an engine oil is 363°F. What is the absolute flashpoint temperature in K and R?

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Q: Gallium has the longest liquid range, in temperature, of any known substance. With a boiling point…

A: We have given temperature in kelvin   The given reading of temperature is 2477 K   We have to…

Q: 47. A ball is thrown directly downward with an initial speed of 8.00 m/s, from a height of 30.0 m.…

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Q: 1. A body at 50 degrees C cools inside a room with temperature of 30 degrees C. At what temperature…

A: Let's find.

Q: An editorial in the New York Times on Sunday June 4, 2011 dicussed the redesigned fuel economy…

A: given  distance=15,000 miles at 27 m.p.g , we find the gallon gas required by car car needs=1500027…

Q: One type of uranium has a radioactive decay rate of 0.4% per day. If 50 pounds of this uranium is…

A: Answer is in next step. please give a like !!

Q: b. A spherical metal ball with initial temperature of 190°C is placed outside where the temperature…

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Q: Carbon dating cannot be used for specimens older than 60,000 years. If 60,000 was the limit of this…

A: We will use the radioactivity formula :   Nt = Noe-λt Where : Nt is the number of undecayed…

Q: Suppose the total money supply is $400bn, and the parameters r and c are the same as in question 3.…

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Q: . A small metal bar, whose initial temperature was 20° C, is dropped into a large container of…

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Q: 2. The number of transistors in a chip produced by Intel has been known to increase at a rate…

A: Let the number of transistors at time t is:  y(t)

Q: If a bus travelling at 25 m/s is subjected to a steady deceleration of 5 m/s?, how long will it take…

A: If a bus travelling at 25 m/s is subjected to a steady deceleration of 5 m/s2 .We have to find  how…

Q: Suppose that a corpse is discovered at 10 p.m. and its temperature is determined to be 85°F. Two…

A: Given that, Suppose that a corpse is discovered at 10 p.m. and its temperature is determined to be…

Q: I = e(k-1)t (Infections per day)

A: This is question of counting and differentiation.

Q: Suppose for a particular commodity, e=1.7 and that currently 50,000 units are selling for $12 each.…

A: It is given that e=1.7 and total unit is 50,000 selling for $12 each. The formula to be used is…