Answered: A 72° object is placed into a 3272º… | bartleby

Related questions

Question

A 72° object is placed into a 3272º furnace and it takes 10 minutes for it to reach 1000 (Recall, T = TR + D, ekt)

a. Find the equation that models the temperature at a given time.

b. How long does it take for the object to reach 2552°?

Expert Solution

Step by step

Solved in 3 steps with 6 images

SEE SOLUTION Check out a sample Q&A here

Blurred answer

Similar questions

In a pressure cooker, water molecules have a velocity of vrms = 738 m/s. a. What temperature H2O molecules have? b. Initially, when you close the lid, air is trapped inside the cooker. Do air molecules have the same vrms that H2O molecules? Earth’s atmosphere is composed mainly of N2, O2 and Ar. Explain. (No calculations needed)
A scientist is attempting to determine the specific heat of a new alloy of mass 0.12 kg. It is heated to 100 °C, then placed in a brass calorimeter. The mass of the calorimeter is 0.5 kg at an initial temperature of 34 °C. The calorimeter contains water of mass 0.25 kg at the same temperature. The equilibrium temperature of 75 °C is reached. a. Write an equation to describe the transfer of energy, using Q = mcAT. b. Write the equation with the speçific heat capacity of the alloy as the subject of the formula. Given that the specific heat.capacity of water is 4.19 x 10° J/kg°C and the с. calorimeter has a specific heat capacity of brass is 380 J/kg°C. What is the specific heat capacity of the alloy?
Please only answer parts vi and vii. The answers are shown in the square brackets next to the questions.
A gas with an initial temperature of 940 °C undergoes the process shown in the figure. (Figure 1) Figure p (atm) 3 2 1- 0 0 100 200 2 300 V (cm³) Part A What type of process is this? Isochoric. Isobaric. Isothermic. Submit ✓ Correct Part B What is the final temperature in °C? Express your answer using two significant figures. T= 3400 °C Submit V= Previous Answers Part C ✓ Correct Previous Answers How many moles of gas are there? Express your answer to two significant figures and include the appropriate units. Submit HÅ A 29 10-4 mol Previous Answers Request Answer P Pearson ?
3 of 4 A stainless-steel-bottomed kettle, its bottom 25 cm in diameter and 1.6 mm thick, sits on a burner. The kettle holds boiling water, and energy flows into the water from the kettle bottom at 800 W. Review I Constants I Periodic Tabl Part A What is the temperature of the bottom surface of the kettle? Thermal conductivity of stainless steel is 14 W/(m K). Express your answer using four significant figures. VO AEO ? T = 102.65 °C Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Review your calculations and make sure you round to 4 significant figures in the last step. Ne Provide Feedback
A 150 kg quantity of a certain metal, initially at 120°C, is dropped into an insulated beaker containing 100 g of water at 20°C. The final temp of the metal and water in the beaker is measured at 35°C. Assume that the heat capacity of the beaker can be ignored. a. How much heat has been transferred from the metal to the water? b. Given the temp change and mass of the metal, what is the specific heat capacity of the metal? c. If the final temp of the water and this metal is 70°C instead of 35°C, what quantity of this metal was dropped into the insulated beaker?
The specific heat of liquid water is 4190 J/kg. K. ▼ Part A What is the molar specific heat of liquid water in J/mol. K? Give your answer as a multiple of R, rounded to the nearest half integer. Express your answer as a multiple of R to the nearest half integer. Cmol = 9 R Submit Correct Part B Previous Answers Equal moles of liquid water and helium gas are heated at constant pressure from the same initial temperature to the same final temperature. By what factor is the entropy increase of the water larger than the entropy increase of the helium? Express your answer to two significant figures. AS water ASHe Submit 17| ΑΣΦ Request Answer ?
In 1986, a gargantuan iceberg broke away from the Ross Ice Shelf in Antarctica. It was approximately a rectangle 160 km long, 40.0 km wide, and 250m thick. a. What is the mass of this iceberg, in kilograms, given that the density of ice is 917 kg/m3 b. How much heat, in joules, must be transferred to the iceberg to melt it? Assume the ice is at 0° C, and the latent heat of fusion for water is Lf=79.8 kcal/kg c. How long, in years, would it take sunlight alone to melt ice this thick, if the ice absorbs an average of 100 W/m2, 12.00 hours per day?
You are building a container out of polystyrene to hold a liquid at 80 °C.The surface area of this container is 1.2 m2.a. If energy is being added at a rate of 50 J/s (that is, 50 W), how thick mustthe container be to keep the outside temperature below 30 °C?b. What would be the required thickness if the container were instead madeout of nickel?
parts d & e only
When a 270-g piece of iron at 160 °C is placed in a 95-g aluminum calorimeter cup containing 250 g of liquid at 10° C, the final temperature is observed to be 35 °C. The value of specific heat for iron is 450 J/kg·C°, and for aluminum is 900 J/kg · C°. Part A Determine the specific heat of the liquid. Express your answer using two significant figures. VO AE ? J C = kg-C° Submit Request Answer
1. A cylinder containing an ideal gas is rapidly compressed as a piston is very quickly pushed down. There are 30 moles of gas. Initial values are: T₁ = 350 K, P₁ = 300 kPa. The final Temperature is Tr 400 K. a. What kind of process is this? b. How much heat is exchanged during this process? C. What is the change in thermal energy of the gas during this process? ف

SEE MORE QUESTIONS