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- A demented scientist creates a new temperature scale, the "Z scale." He decides to call the boiling point of nitrogen 0°Z and the melting point of iron 1000° Z. Part A What is the boiling point of water on the Z scale? Express your answer in degrees of the Z scale. ► View Available Hint(s) —| ΑΣΦ Tz = Submit Part B Convert 400°Z to the Celsius scale. Express your answer in degrees Celsius. ► View Available Hint(s) To = Submit 3 IVE ΑΣΦ ? "Z °CI Review I Constants Part A An insulated beaker with negligible mass contains liquid water with a mass of 0.280 kg and a temperature of 77.8 °C. How much ice at a temperature of -13.5 °C must be dropped into the water so that the final temperature of the system will be 22.0 ° C ? Take the specific heat of liquid water to be 4190 J/kg · K, the specific heat of ice to be 2100 J/kg K, and the heat of fusion for water to be 3.34x105 J/kg. • View Available Hint(s)Example 14.5 A sphere that is a perfect blackbody radiator has a radius of 0.060 m and is at 200°C in a room where the temperature is 22°C. Calculate the (a) energy radiated by the sphere each second (b) net rate at which the sphere radiates energy (Stefan's constant 5.67x103 W m2 K4)
- Constants One way to improve insulation in windows is to fill a sealed space between two glass panes with a gas that has a lower thermal conductivity than that of air. The thermal conductivity k of a gas depends on its molar heat capacity Cy , molar mass M, and molecular radius r. The dependence on those quantities at a given temperature is approximated by k o Cv/r2 VM. The noble gases have properties that make them particularly good choices as insulating gases. Noble gases range from helium (molar mass 4.0 g/mol, molecular radius 0.13 nm) to xenon (molar mass 131 g/mol, molecular radius 0.22 nm). (The noble gas radon is heavier than xenon, but radon is radioactive and so is not suitable for this purpose.) Part A What is one reason the noble gases are preferable to air (which is mostly nitrogen and oxygen) as an insulating material? Noble gases are monatomic, so no rotational modes contribute to their molar heat capacity. noble gases are monatomic, so they have lower molecular masses…← → C WP Help Centre myMapúa: Welcome Question 27 of 30 View Policies education.wiley.com/was/ui/v2/assessment-player/index.html?launchid=544b29a3-e451-4a76-95da-d923ade34b8b#/question/26 O Number i + Save for Later 33°C Mostly sunny Microsoft Office Ho... Courses Microsoft Teams - L...Mail-ALLYSON VIV... ParentPortal | Mapu.... MathWorks - Make.... ps Turning Point - Parti.... Units ‒‒ = Current Attempt in Progress A 5.3 μC point charge is placed in an external uniform electric field that has a magnitude of 51000 N/C. At what distance from the charge is the net electric field zero? Q Search 12 Explore GitHub a ☆ * -75 ENG US = X D I Attempts: 0 of 3 used Submit Answ 5:06 pm 18/03/2023I Review I Constants An insulated beaker with negligible mass contains 0.235 kg of water at a temperature of 75.0°C. Part A How many kilograms of ice at a temperature of -20.0° C must be dropped in the water so that the final temperature of the system will be 30.0° C? Express your answer in kilograms. ? kg m = Submit Request Answer
- PHY 131 Fall 2020 Hi, kalsoom v Sign Out Physics Course Home MacBook ProIntegrated Concepts One 30.0C day the relative humidity is 75.0%, and that evening the temperature drops to 20.0C, well below the dew point. (a) How many grams of water condense from each cubic meter of air? (b) How much heat transfer occurs by this condensation? (c) What temperature increase could this cause in dry air?Some incandescent light bulbs are filled with argon gas. What is vrms for argon atoms near the filament, assuming their temperature is 2500 K?
- To help prevent from damage, 4.00 kg at 0C water is sprayed onto a fruit tree. (a) How much heat transfer occurs as the water freezes? (b) How much would the temperature at the 200kg tree decrease if this amount of heat transferred from the tree? Take the specific heat to be 3.35kJ/kgC, and assume that no phase change occurs.A high-end gas stove usually has at least one burner rated at 14 000 Btu/h. (a) If you place a 0.25-kg aluminum pot containing 2.0 liters of water at 20.C on this burner, how long will it take to bring the water to a boil, assuming all the heat from the burner goes into the pot? (b) Once boiling begins how much time is required to boil all the water out of the pot?Physics 120 Instructor: Dr. Gheith, M. Exercise No 11: A dish of lasagna is being heated in a microwave oven. The effective area of the lasagna that is exposed to the microwave is 1.6 x 10-2 m². The mass of the lasagna is 0.25 kg, and its specific heat capacity is 3400 J/(kg.Cº). The temperature rises by 80.0 C° in 7.0 minutes. What is the intensity of the microwaves in the oven?