Homework Answers
Part A
Air passing over soup is relatively cooler, so convection should be less than zero,
It will be negative.
---------------------------------------------------
Part B
In same way, evaporating heating rate is also less than 0 because environment (surroundings) is at lower temperature.
Add Answer to:
To
cool hot soup, you blow across the top of a bowl of soup.
Part A...
Reset Help reduce When you blow over the top of a bowl of hot soup, you...
Reset Help reduce When you blow over the top of a bowl of hot soup, you increase evaporation and its cooling effect by removing the warm vapor that tends to condense and increase the net evaporation faster slower As you blow, you also increase the rate of convective cooling, replacing the hot air near the surface of the soup with cooler air increase To test the explanation involving evaporation, blow on your soup with air at different humidity levels drier...
Constants Part A You cool a 100.0 g slug of red-hot iron (temperature 745 ° C)...
Constants Part A You cool a 100.0 g slug of red-hot iron (temperature 745 ° C) by dropping it into arn insulated cup of negligible mass containing 85.0 g of water at 20.0 °C. Assume no heat exchange with the surroundings. What is the final temperature of the water? Express your answer using three significant figures. Tfinal o C Submit Request Answer ▼ Part B What is the final mass of the iron and the remaining water? Express your answer...
A Review | Constants You decide to take a nice hot bath but discover that your...
A Review | Constants You decide to take a nice hot bath but discover that your thoughtless roommate has used up most of the hot water. You fill the tub with 195 kg of 30.0°C water and attempt to warm it further by pouring in 5.00 kg of boiling water from the stove. Correct Part B Calculate the final temperature of the bath water. VO AXP TE "C Submit Request Answer Part Calculate the net change in entropy of the...
em 8 A uniform marble rolls down a symmetric bowl, starting from rest at the top...
em 8 A uniform marble rolls down a symmetric bowl, starting from rest at the top of the left side The top of each side is a distance h above the botom of the bowl. The left half of the bow Part A is rough enough to cause the marble to roll without slipping, but the right half has no friction because it is coated with oil. How far up the smooth side will the marble go, measured vertically from...
The pressure on top of Mount Everest (29,029 ft) averages about 235 mmHg Part A You...
The pressure on top of Mount Everest (29,029 ft) averages about 235 mmHg Part A You may want to reference (Pages 201 - 201) Section 5.2 while completing this problem. Convert this pressure to torr. 10 AO + O 2 ? P- torr Submit Request Answer Part B Convert this pressure to psi. VALORO? P = Submit Request Answer Part 6 Convert this pressure to in Hg. Exercise 5.26 - Enhanced - with Feedback The pressure on top of Mount...
Problem 17.60 - Enhanced - with Feedback A large punch bowl holds 3.50 kg of lemonade...
Problem 17.60 - Enhanced - with Feedback A large punch bowl holds 3.50 kg of lemonade (which is essentially water) at 22.0 °C.A 5.90x10-2kg ice cube at -12.0°C is placed in the lemonade. You may want to review (Pages 607 608) Part A What is the final temperature of the system? Ignore any heat exchange with the bowl or the surroundings. VE ΑΣφ h o ? T. "С Submit Request Answer Part B What is the amount of ice (if...
Please help (9%) Problem 8: A 0.26-kg aluminum bowl holding 0.65 kg of soup at 25.0°C...
Please help
(9%) Problem 8: A 0.26-kg aluminum bowl holding 0.65 kg of soup at 25.0°C is placed in a freezer. Specific heat (c) ubstance Solids Aluminum Concrete 900 840 387 840 2090 0.20 0.0924 0.20 Glass Ice (average Liquids Water 4186 1.000 Gases Steam (100C) 1520 (2020) 0.363(0.482) Ctheexpertta.com What is the final temperature, in degrees Celsius, if 377 kJ of energy is transferred from the bowl and soup, assuming the soup's thermal properties are the same as that...
Part A When the car is at the top of the ramp, it has its maximum...
Part A When the car is at the top of the ramp, it has its maximum potential energy O its minimum potential energy Submit Request Answer Part B As the car descends, O potential energy is converted into kinetic energy O kinetic energy does not change kinetic energy is converted into potential energy O potential energy does not change Submit Request Answer Part 6 Submit Request Answer Part At the bottom, all of car's energy is kinetic potential Submit Request...
I final = 100 u You cool a 100.0 g slug of red-hot iron (temperature 745°C)...
I final = 100 u You cool a 100.0 g slug of red-hot iron (temperature 745°C) by dropping it into an insulated cup of negligible mass containing 75.0 g of water at 20.0°C. Assume no heat exchange with the surroundings. Submit Previous Answers ✓ Correct Part B What is the final mass of the iron and the remaining water? Express your answer with the appropriate units. HÅR 2 ? Value Units | m= m = Submit Request Answer
Your 300 mL cup of coffee is too hot to drink when served at 93 Part...
Your 300 mL cup of coffee is too hot to drink when served at 93 Part A What is the mass of an ice cube taken from a -18°C freezer, that will cool your coffee to a pleasant 65°C Express your answer in grams. %0AEV O ? Submit Request Answer
Reset Help reduce When you blow over the top of a bowl of hot soup, you increase evaporation and its cooling effect by removing the warm vapor that tends to condense and increase the net evaporation faster slower As you blow, you also increase the rate of convective cooling, replacing the hot air near the surface of the soup with cooler air increase To test the explanation involving evaporation, blow on your soup with air at different humidity levels drier...
Constants Part A You cool a 100.0 g slug of red-hot iron (temperature 745 ° C) by dropping it into arn insulated cup of negligible mass containing 85.0 g of water at 20.0 °C. Assume no heat exchange with the surroundings. What is the final temperature of the water? Express your answer using three significant figures. Tfinal o C Submit Request Answer ▼ Part B What is the final mass of the iron and the remaining water? Express your answer...
A Review | Constants You decide to take a nice hot bath but discover that your thoughtless roommate has used up most of the hot water. You fill the tub with 195 kg of 30.0°C water and attempt to warm it further by pouring in 5.00 kg of boiling water from the stove. Correct Part B Calculate the final temperature of the bath water. VO AXP TE "C Submit Request Answer Part Calculate the net change in entropy of the...
em 8 A uniform marble rolls down a symmetric bowl, starting from rest at the top of the left side The top of each side is a distance h above the botom of the bowl. The left half of the bow Part A is rough enough to cause the marble to roll without slipping, but the right half has no friction because it is coated with oil. How far up the smooth side will the marble go, measured vertically from...
The pressure on top of Mount Everest (29,029 ft) averages about 235 mmHg Part A You may want to reference (Pages 201 - 201) Section 5.2 while completing this problem. Convert this pressure to torr. 10 AO + O 2 ? P- torr Submit Request Answer Part B Convert this pressure to psi. VALORO? P = Submit Request Answer Part 6 Convert this pressure to in Hg. Exercise 5.26 - Enhanced - with Feedback The pressure on top of Mount...
Problem 17.60 - Enhanced - with Feedback A large punch bowl holds 3.50 kg of lemonade (which is essentially water) at 22.0 °C.A 5.90x10-2kg ice cube at -12.0°C is placed in the lemonade. You may want to review (Pages 607 608) Part A What is the final temperature of the system? Ignore any heat exchange with the bowl or the surroundings. VE ΑΣφ h o ? T. "С Submit Request Answer Part B What is the amount of ice (if...
Please help
(9%) Problem 8: A 0.26-kg aluminum bowl holding 0.65 kg of soup at 25.0°C is placed in a freezer. Specific heat (c) ubstance Solids Aluminum Concrete 900 840 387 840 2090 0.20 0.0924 0.20 Glass Ice (average Liquids Water 4186 1.000 Gases Steam (100C) 1520 (2020) 0.363(0.482) Ctheexpertta.com What is the final temperature, in degrees Celsius, if 377 kJ of energy is transferred from the bowl and soup, assuming the soup's thermal properties are the same as that...
Part A When the car is at the top of the ramp, it has its maximum potential energy O its minimum potential energy Submit Request Answer Part B As the car descends, O potential energy is converted into kinetic energy O kinetic energy does not change kinetic energy is converted into potential energy O potential energy does not change Submit Request Answer Part 6 Submit Request Answer Part At the bottom, all of car's energy is kinetic potential Submit Request...
I final = 100 u You cool a 100.0 g slug of red-hot iron (temperature 745°C) by dropping it into an insulated cup of negligible mass containing 75.0 g of water at 20.0°C. Assume no heat exchange with the surroundings. Submit Previous Answers ✓ Correct Part B What is the final mass of the iron and the remaining water? Express your answer with the appropriate units. HÅR 2 ? Value Units | m= m = Submit Request Answer
Your 300 mL cup of coffee is too hot to drink when served at 93 Part A What is the mass of an ice cube taken from a -18°C freezer, that will cool your coffee to a pleasant 65°C Express your answer in grams. %0AEV O ? Submit Request Answer
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