A 1.20-g lead bullet at 28.0°C is fired at a speed of 200 m/s into a large block of ice at 0°C, in which it becomes embedded. What quantity of ice melts? 85.189*10**-4 X What are the sources of energy that can cause the ice to melt? g
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- 7A 0.8 kg ice cube at -50C is placed in a thermally insulated container with 5 kg of Aluminum at 46.20C. Determine the final temperature and phase of each substance in the container. If either substance ends in a mixed phase determine the amount of mass in each phase.19 A sample of an ideal gas is in a vertical cylinder fitted with a piston. As 5.79 kJ of energy is transferred to the gas by heat to raise its temperature, the weight on the piston is adjusted so that the state of the gas changes from point A to point B along the semicircle as shown in the figure. Find the change in internal energy (in J) of the gas. P(kPa) 500 B 300 JA V (L) 1.2 3.6 6.0 O 1.70 O 2.5 O 6.12 O 10.50 3.60
- 1. During the isobaric expansion from A to B represented below, -110 J of heat is removed from the gas. p (N/m²) 1.0 x 104. A B 0.15 0.30 V (m³) (a) Calculate the work done by the gas during expansion from A to B. WAB = ✓ J (b) What is the change in its internal energy? ΔΕint - VJ What Law of Thermodynamics did you use in part (b)? AA 51-g ice cube at 0°C is heated until 43.0 g has become water at 100°C and 8.0 g has become steam at 100°C. How much energy was added to accomplish the transformation? ?kJ1. 0.10 mol of argon gas is admitted to an evacuated 0.25 ma container at 206C. The gas then undergoes an isobaric heating to a temperature of 300-C. a) What is the final volume of the gas? b) Show the process on a pV diagram. Label both axes and include a proper scale. c) How much work is done on or by the gas in this process?
- Vrms for nitric oxide gas (NO) at 16°C. 8. 555.6 m/s B. 534.9 m/s C. 424.7 m/s 593.7 m/s 490.2 m/s 482.7 m/s 1--1 273 cm³ of an ideal gas has an initial temperature of 0°C. The gas is heated at a constant p It will now occupy 9. A. 263 cm³ D. 278 cm³ Find ن ہو نے A. 8 16.00 DEE D. E. F. 7 N 14.01An aluminum cup contains 225 g of water and a 40-g copper stirrer, all at 27°C. A 424-g sample of silver at an initial temperature of 90°C is placed in the water. The stirrer is used to stir the mixture gently until it reaches its final equilibrium temperature of 32°C. Calculate the mass of the aluminum cup. g4) A ground source heat pump heats a building by extracting heat from the ground and pumping it into the building. Define: Qc = heat extracted from the ground, Qn= heat pumped into the building, W = electric energy used by the heat pump, Tc= temperature of the ground, T = temperature of building (Qc, Qn, and W are positive by definition). Assume Tr > Tc. a) Draw a diagram showing energy flow in and out of the heat pump. b) Write a general expression for the change AS in the entropy of the "universe", that is the heat pump plus the cold and hot reservoirs, in terms of the quantities defined above. Now assume ideal (reversible) operation, and take Te= 10 °C and Tp= 20 °C. What is the coefficient of performance (ČOP) of the heat pump? By what factor would this change if we had Tc = 0 °C instead?
- An aluminum cup contains 225 g of water and a 40-g copper stirrer, all at 27°C. A 492-g sample of silver at an initial temperature of 86°C is placed in the water. The stirrer is used to stir the mixture gently until it reaches its final equilibrium temperature of 32°C. Calculate the mass of the aluminum cup. ?g-80J of work are done on the gas in the process shown in (Figure 1). Figure p (kPa) P₁- 0 0 100 200 300 1 of 1 V (cm³) Part A What is p₁ in kPa? Express your answer in kilopascals. P1 = Submit IVE ΑΣΦ Provide Feedback Previous Answers Request Answer ? kPa6