A thermometer is in a container half filled with tea at 30 degrees Celsius. A smaller amount of tea at 40 degrees Celsius is added. Which equilibrium temperature do you expect to have? O 30 degrees O between 35 and 40 degrees O 35 degrees between 30 and 35 degrees

A 85 g iron bar (specific heat =450J/kg C) at 100 °C is placed into 230 g of water at 15 "C. What will be the final temperature of the iron bar as it cools in the water? Your Answer: Answer

Estimate the amount of energy required to increase the temperature of an iron block of 0.250 g from 40°C to 500°C.

Three thermometers are in the same water bath. After thermal equilibrium is established, it is found that the Celsius thermometer reads 10 °C, the Fahrenheit thermometer reads 50 F, and the Kelvin thermometer reads 263 K.  Which one of the following statements is the most reasonable conclusion? All three thermometers are incorrect. The Celsius thermometer is incorrect. The Fahrenheit thermometer is incorrect. The three thermometers are at different temperatures. The Kelvin thermometer is incorrect.

Scientists experiment with a balloon near a Himalayan fresh water lake at an altitude of 5000 m where atmospheric pressure is half of that at sea level. The temperature of the lake is uniform with depth and identical to the air at the surface of the lake. To what depth should a balloon be taken under the lake to reduce its volume by a factor of 4?   answer: 20m

On a trip, you notice that a 3.15-kg bag of ice lasts an average of one day in your cooler. What is the average power in watts entering the ice if it starts at O°C and completely melts to 0°C water in exactly one day? P = W

A jet of steam at 100°C is applied to a 2.00 kg block of ice at 0°C. How many grams of steam would be required to completely melt the ice assuming a complete transfer of thermal energy? nA d bloow olle boutaig erd 15000 lo yolla an ai e W lobin bna 1900 lo yolla ns e losbinom 4

How hot is the air in the top (crown) of a hot air balloon? Information from Ballooning: The Complete Guide to Riding the Winds, by Wirth and Young (Random House), claims that the air in the crown should be an average of 100°C for a balloon to be in a state of equilibrium. However, the temperature does not need to be exactly 100°C. What is a reasonable and safe range of temperatures? This range may vary with the size and (decorative) shape of the balloon. All balloons have a temperature gauge in the crown. Suppose that 58 readings (for a balloon in equilibrium) gave a mean temperature of x = 97°C. For this balloon, ? ≈ 22°C. (a) Compute a 95% confidence interval for the average temperature at which this balloon will be in a steady-state equilibrium. (Round your answers to one decimal place.) lower limit     _______ °C upper limit     _______ °C