Question
A small metal bar, whose initial temperature is 20 ℃, is dropped into a container containing...
A
small metal bar, whose initial temperature is 20 ℃, is dropped into
a container containing boiling water (at 100 ℃) and its temperature
increases 2 ℃ in 1 second. Determine the temperature of the metal
bar after 10 seconds. How much time should we spend for the sea
slug temperature of 60 ℃?
Homework Answers
Answer #1
Not the answer you're looking for?
Similar Questions
A small metal bar, whose initial temperature was 30° C, is dropped into a large container...
A small metal bar, whose initial temperature was 30° C, is
dropped into a large container of boiling water. How long will it
take the bar to reach 80° C if it is known that its temperature
increases 2° during the first second? (The boiling temperature for
water is 100° C. Round your answer to one decimal place.)
sec
How long will it take the bar to reach 95° C? (Round your answer
to one decimal place.)
sec
1. A small metal bar, whose initial temperature was 30° C, is dropped into a large...
1. A small metal bar, whose initial temperature was 30° C, is
dropped into a large container of boiling water. How long will it
take the bar to reach 70° C if it is known that its temperature
increases 2° during the first second?
1. A 100 kg metal block at 100°C went into an insulating container containing 1000 kg...
1. A 100 kg metal block at 100°C went into an insulating
container containing 1000 kg of water at 20°C. After enough time
had elapsed, water and metal temperatures became equal to each
other. Here the meanness of metal and water is and
respectively.
1) Find the final temperature.
2) Determine the entropy changes of water and copper during the
process.
What is the total entropy change?
please answer quickly TT
A 25 g gold nugget with an initial temperature of 60 °C is dropped into an...
A 25 g gold nugget with an initial temperature of 60 °C is
dropped into an insulated cup containing 100 ml of water initially
at a temperature of 5°C. What is the final temperature after
thermal equilibrium is established?
Table 3.4 Specific Heat Capacities of Some Common Substances
Substance Specific Heat Capacity (J/g °C) Lead 0.128 Gold 0.128
Silver 0.235 Copper 0.385 Iron 0.449 Aluminum 0.903 Ethanol 2.42
Water 4.184
Consider two 35-gram ice cubes, each initially at -5°C. One is dropped into a at container...
Consider two 35-gram ice cubes, each initially at -5°C. One is
dropped into a at container filled with 0.1 kg of liquid nitrogen
(initially the boiling point of nitrogen); the other cube is
dropped into a container filled with 1 kg of (liquid) water,
initially at 5°C. Assume that no heat is lost through either
container (or into the atmosphere)
a) Describe what happens to each ice cube (and why)
b) If (Lv)Nitrogen =48 kcal/kg, (LF)Nitrogen = 6.1 kcal/kg,
and...
Consider two 35-gram ice cubes, each initially at -5°C. One is dropped into a at container...
Consider two 35-gram ice cubes, each initially at -5°C. One is
dropped into a at container filled with 0.1 kg of liquid nitrogen
(initially the boiling point of nitrogen); the other cube is
dropped into a container filled with 1 kg of (liquid) water,
initially at 5°C. Assume that no heat is lost through either
container (or into the atmosphere)
a) Describe what happens to each ice cube (and why)
b) If (Lv)Nitrogen =48 kcal/kg, (LF)Nitrogen = 6.1 kcal/kg,
and...
You have a beaker containing 100 mL of water. The initial temperature of the water is...
You have a beaker containing 100 mL of water. The initial
temperature of the water is 200C. (Note: One mL = 1
cm3).
You place a piece of copper into the beaker containing. When
you do, the water level increases to 110.5 mL. What is the mass of
the copper in grams?
If the temperature of the water increases to 350C,
how much heat (in calories) did the copper add to the water?
You now add a piece of iron...
A student places a 72.0 gram sample of metal at an initial temperature of 100.˚C in...
A student places a 72.0 gram sample of metal at an initial
temperature of 100.˚C in a coffee cup calorimeter that contains
40.0 grams of water at an initial temperature of 25.0 ˚C. After
addition of the metal, the temperature of the water / metal mixture
was monitored using a temperature probe. The highest temperature of
the water / solid combination was found to be 35.0 ˚C. (The
specific heat of water = 4.18 J / g ˚C )
Do...
110 grams of boiling water (temperature 100°C, heat capacity 4.2 J/gram/K) are poured into an aluminum...
110 grams of boiling water (temperature 100°C, heat capacity 4.2
J/gram/K) are poured into an aluminum pan whose mass is 930 grams
and initial temperature 26°C (the heat capacity of aluminum is 0.9
J/gram/K).
(a) After a short time, what is the temperature of the water?
Entry field with correct answer °C
(c) Next you place the pan on a hot electric stove. While the
stove is heating the pan, you use a beater to stir the water, doing
19638...
150 grams of boiling water (temperature 100°C, heat capacity 4.2 J/gram/K) are poured into an aluminum...
150 grams of boiling water (temperature 100°C, heat capacity 4.2
J/gram/K) are poured into an aluminum pan whose mass is 970 grams
and initial temperature 25°C (the heat capacity of aluminum is 0.9
J/gram/K). (a) After a short time, what is the temperature of the
water?
(b) What simplifying assumptions did you have to make?
The thermal energy of the aluminum doesn't change.
Energy transfer between the system (water plus pan) and the
surroundings was negligible during this time.
The...
ADVERTISEMENT
Need Online Homework Help?
Get Answers For Free
Most questions answered within 1 hours.
ADVERTISEMENT
Active Questions
asked 1 minute ago
asked 3 minutes ago
asked 17 minutes ago
asked 32 minutes ago
asked 33 minutes ago
asked 35 minutes ago
asked 43 minutes ago
asked 47 minutes ago
asked 51 minutes ago
asked 51 minutes ago
asked 55 minutes ago
asked 1 hour ago