A hot body is placed in cooler surrounding. Its rate of cooling is 3°C per minute when its temperature is 70° C and 15°C per minute when its temperature is 50°C Determine temperature of the surrounding and find the rate of cooling when the temperature of body is 40°C

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Q: An old wooden tool is found with 20 percent of ¹4C when compared to fresh wood Estimate the age of…

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A: option B is correct

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Q: A 10KW immersion heater is placed in a pot containing two liter of water at 23°C. How long will it…

A: Given : P = 10 kW = 10 × 103 W V = 2 L = 2 × 10-3 m3 T1 = 23°C T2 = 100°C e = 32% = 0.32 c = 4185…

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Q: The specific heat of sample X isIf 153 calories are added to 38.1 g sample X by how much would the…

A: Specific heat capacity  C = 0.217 cal/g*C Mass (M) = 38.1 g Heat (Q) = 153

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Q: In accordance with industrial standards, the thermal expansion is calculated with respect to the…

A: Required : Reference temperature for thermal expansion according to industry standard.

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Q: Find the change in volume of an aluminum sphere with an initial radius of 10 cm when the sphere is…

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Q: Rate of cooling of body is 0.5°C/min, when the system is 50°C above the surroundings. When a system…

A: This is a question based on Newton's Law of cooling: Newton's Law of cooling states that rate of…

Q: Newton's law of cooling states that the temperature of an object changes at a rate proportional to…

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Q: A 25 g sample of iron initially at 800.00 °C is dropped into 200 g of water initially at 30.00  °C.…

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Q: When the pressure in a container is 1200 pascals, the temperature is 400 K. Find the temperature…

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Q: To help prevent frost damage, 3.75 kg of 0°C water is sprayed onto a fruit tree Part (a)  How much…

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Q: A hot body is kept in cooler surroundings. Its rate of сooling is 2°C / min. when is temperature is…

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Q: 11. Which other essential information is required to calculate the energy needed to change 0.5 kg of…

A: Solution: required information to calculate the ice conversion from teh -10C to water at 20 C

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Q: he final temperature is 22.1°C, what is the specific heat of the object? (2 sig fig) B) Referring…

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Q: A9.7-g lead bullet is fired into a fence post. The initial speed of the bullet is 710 m/s, and when…

A: m=9.7 gv= 710m/sK=12×9.7×10-3×7102 K= 2444.88 J

Q: a resting person has skin temperature 35C if his room temperature is 30C and the body surface area…

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