3. A bar of iron, previously heated to 1200°C, is cooled in a large bath of water maintained at a constant temperature of 50°C. The bar cools by 200° in the first minute. How much longer will it take to cool a second 200°?

Q: 2. A thermometer is taken from an inside room to the outside ,where the air temperature is 5° F.…

A:

Q: 5. A dish of 4000 cells is to grow at a rate of 11.76 % every 4 hours. How many cells will be in the…

A:

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…

A:

Q: 1 At 1:00 P.M., a thermometer reading 70°F is taken outside where the air temperature is - 10°F (ten…

A: Given:       Thermometer was taken outside         T=Ts+(To−Ts)e-kt           T=-10+70+10e-kt…

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: Suppose a block of metal is heated to 250 ° F and then brought into a room that is at 90° F at 5 pm.…

A: Given that: The difference in Temperature of the Metal Block and Room at 5:30 PM is 5oF. Label as Td…

Q: If the assembly line is running at a cycle time of 130 sec/unit and there are 5 workstations, what…

A: Given cycle time (C.T.) is 130 sec/unit Number of workstations (N) = 5 Total task time ∑T=400 sec

Q: 1) A thermometer with an initial temperature of 75°C is placed in a room with a controllec…

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Q: 1. The frequency of a vibrating string under constant tension is inversely proportional to its…

A: The answer is given as follows.

Q: A roasted turkey is taken from an oven when its temperature has reached 185F and is placed on a…

A:

Q: A metal is heated up to a temperature of 500°C. It is then exposed to a temperature of 38C.

A: Given that Metal is heated up to temperature 5000c The surrounding temperature is 380c Temperature…

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…

Q: 2. An object is placed in a room where the temperature is kept at a constant 60°F. The object cools…

A: An object is placed in a room where the temperature is kept at a constant 60°F.The object cools from…

Q: 1. Two planes leave at the same time. One flies west at 300km/hr. the other flies east at 450 km/hr.…

A: Speed of plane 1:  s1 = 300 km/hr Speed of plane 2:  s2 = 450 km/hr

Q: 2) A body temperature of 50 °F is placed in an oven whose temperature is kept at 150 °F. If after…

A: time required for the body to reach 100°F=?

Q: 6. In a murder investigation, the temperature of the corpse was 32.5°C at 1:30 PM and 30.3°C an hour…

A:

Q: (2) A stone is thrown vertically upward from the ground with an initial velocity of 40 ft/sec. (2.1)…

A: Topic:-  basic maths  Note :- as per our guideline if more than three subparts need to be answered…

Q: 28. A formula for the normal systolic blood pressure for a man of age A, measured in mmHg, is given…

A: A former for the normal systolic blood pressure for a man of age A, measured in…

Q: 6. If 200 grams of water is to be heated from 24.0°C to 100.0°C to make a cup much heat must be…

A: Write the formula for head added and put all the given values.

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

A:

Q: 1. A man takes 40 mg of a certain medicine. Each hour, the amount of medicine in the man's system…

A: Let's find.

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: 5. When a pot is removed from a stove, its temperature is measured at 250°C. Four minutes later its…

A:

Q: Temperature has only one scale. O True False

A:

Q: A small metal bar, whose initial temperature was 15° C, is dropped into a large container of bowling…

A: Given Initial temperature=15°C temperature increase to=22°C in 1 second.

Q: e. How many more deaths were caused by Volcano 1 than by Volcano 47 Volcano 1 was responsible for…

A: We have given that a sample of volcanic eruptions are described in the table.

Q: 5) When a cake is removed from an oven, its temperature is measured at 300°F. Three minutes later…

A: Q5) how long will it take for the cake to cool off to 80F

Q: A ceramic insulator is baked at 400°C and cooled in a room in which the temperature is 20°C. After 4…

A:

Q: trouble which detains it an hour, after which it proceeds at three-fifths of its original rate and…

A:

Q: A body of an unknown temperature is placed in a room which is held at a constant temperature of 30 .…

A: Given that, A body of an unknown temperature is placed in a room which is held at a constant…

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: 3) A thermometer is brought outside where the air temperature is -12° C. After 1 minute the…

A: Newton's law cooling is used

Q: 28. A formula for the normal systolic blood pressure for a man of age A, measured in mmHg, is given…

A:

Q: 6. A boy on a bike rides north 5miles then turns east. If he rides 10 miles per hour, at what rate…

A: Distance travel in north distance = 5 miles,

Q: Find how much more energy was released by an earthquake of magnitude 6.9 than by an earthquake of…

A: Solution: use formula Log E = 11.8+1.45M

Q: 1. A thermometer is taken from an inside room to the outside, where the air temperature is 15°F.…

A:

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: 6. A glass of hot water (at 200°F) is put into a refrigerator, where the temperature is 10°F. After…

A: Consider the initial temperature is 200°F and the temperature after 15 minutes is 140°F. The…

Q: 1B) A red wine is brought up from the wine cellar, which is cool 10˚C, and left to breathe in a room…

A: Let T1 and T2 be the wine temperature and room temperature, respectively.

Q: 19.) A cyclist traveling at 40ft/s decelerates at a constant 4 ft/sec?. How many feet do they travel…

A:

Q: A small metal bar, whose initial temperature was 15° C, is dropped into a large container of bowling…

A: We know that, the standard form of Newton's law of cooling: T-T∞=T0-T∞e-kt Where; T∞ is the ambient…

Q: 2. At 1:00 Pm, a 850 C cup of milk is brought in a room with a temperature of 30°C. After 3 minutes,…

A:

Q: 11. A scuba tank holds 2.6 m3 of compressed air. A diver at a shallow depth uses about 0.002 m³ per…

A: (a) The amount of air used by diver in one minute will be equal to the product of amount of air per…

Q: was an earthquake in South America with magnitude 4.3 that caused only minor damage. How many times…

A:

Q: If you leave a 100-W light bulb on for a week, how many joules of energy will be consumed?

A:

Q: 1. A mercury thermometer recards a temperature of 8 degrees Fahrenheit at 10 A.M. If the temperature…

A: Note: Since you have posted multiple questions we will solve the first question for you. If you want…

Q: 10. The mass of a radioactive substance is 1000mg and decreases by 7% per year. What is its mass…

A:

Q: 2. An object with a temperature of 32°C is taken to an open field where the temperature is 42°C.…

A:

Q: 3. A white wine at room temperature 70°F is chilled in ice (32°F). If it takes 15 minutes for the…

A: To find the reading at the end of half an hour