9. In an experiment, a 0.290-kg piece of ceramic superconducting material at 19 °C is placed in liquid nitrogen at its poiling point (-195.8 °C) to cool. The nitrogen is in a perfectly insulated flask that allows the gaseous N2 to escape mmediately. How much mass of liquid nitrogen will be boiled away? (Take the specific heat of the ceramic material to be the same as that of glass.) grams 160 ss 160 ss sfoo

A thermometer, reading 5°C, is brought into a room whose temperature is 22°C. One minute later the thermometer reading is 12°C.1. Which function representing the thermometer reading, T, at any given time t (in minutes) is correct?a. dT/dt= k(T-22)b. dT/dt= -k(T-22)c. dt/dT= k(T-22)d. dt/dT= -k(T-22)

1.) Create a scatter chart with all the data

(1a). Figure shows a copper rod AB being heated at one end. Explain how the heat transfers from A to B. What is the name of this method? copper rod Bunsen burner (1b). The Earth can be considered to be a perfect black body radiator at a temperature of 134°F. Radius of Earth is 6390 km. Calculate the total power radiated from the Earth in Watts (W)

#5. RUSH

#19.13 FIND THE GIVEN, REQUIRED, SOLUTION AND EXPLAIN PER STEPS

Question 4: Statistical Mechanics

Not only is liquid nitrogen a cheaper coolant than liquid helium, its boiling point is higher (77 K vs. 4.2 K). How does higher temperature help lower the cost of cooling a material? Explain in terms of the rate of heat transfer being related to the temperature difference between the sample and its surroundings.

2034 The molecules of a certain gas consist of two different atoms, each with zero nuclear spin, bound together. Measurements of the specific heat of this material, over a wide range of temperatures, give the graph shown below. 3.5 2,5 1,5 72 T3 T(K) Fig. 2.10.

9. In an experiment, a 0.280-kg piece of ceramic superconducting material at 27 °C is placed in liquid nitrogen at its boiling point (-195.8 °C) to cool. The nitrogen is in a perfectly insulated flask that allows the gaseous N2 to escape immediately. How much mass of liquid nitrogen will be boiled away? (Take the specific heat of the ceramic material to be the same as that of glass.) grams