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- College physics ii
- Temperature, kinetic theory,
- Humidity, evaporation, and
(a) At what temperature does water boil at an altitude of 1500 m (about 5000 ft) on a day when atmospheric pressure is
(b) What about at an altitude of 3000 m (about 10,000 ft) when atmospheric pressure is
What is the atmospheric pressure on top of Mt. Everest on a day when water boils there at a temperature of
At a spot in the high Andes, water boils at
, greatly reducing the cooking speed of potatoes, for example. What is atmospheric pressure at this location?
What is the relative humidity on a
day when the air contains
of water vapor?
What is the density of water vapor in
on a hot dry day in the desert when the temperature is
and the relative humidity is 6.00%?
A deep-sea diver should breathe a gas mixture that has the same oxygen partial pressure as at sea level, where dry air contains 20.9% oxygen and has a total pressure of
. (a) What is the partial pressure of oxygen at sea level? (b) If the diver breathes a gas mixture at a pressure of
, what percent oxygen should it be to have the same oxygen partial pressure as at sea level?
(a)
(b)
The vapor pressure of water at
is
. Using the ideal gas law, calculate the density of water vapor in
that creates a partial pressure equal to this vapor pressure. The result should be the same as the saturation vapor density at that temperature
Air in human lungs has a temperature of
and a saturation vapor density of
. (a) If 2.00 L of air is exhaled and very dry air inhaled, what is the maximum loss of water vapor by the person? (b) Calculate the partial pressure of water vapor having this density, and compare it with the vapor pressure of
.
(a)
(b)
; the two values are nearly identical.
If the relative humidity is 90.0% on a muggy summer morning when the temperature is
, what will it be later in the day when the temperature is
, assuming the water vapor density remains constant?
Late on an autumn day, the relative humidity is 45.0% and the temperature is
. What will the relative humidity be that evening when the temperature has dropped to
, assuming constant water vapor density?
Atmospheric pressure atop Mt. Everest is
. (a) What is the partial pressure of oxygen there if it is 20.9% of the air? (b) What percent oxygen should a mountain climber breathe so that its partial pressure is the same as at sea level, where atmospheric pressure is
(c) One of the most severe problems for those climbing very high mountains is the extreme drying of breathing passages. Why does this drying occur?
What is the dew point (the temperature at which 100% relative humidity would occur) on a day when relative humidity is 39.0% at a temperature of
?
On a certain day, the temperature is
and the relative humidity is 90.0%. How many grams of water must condense out of each cubic meter of air if the temperature falls to
? Such a drop in temperature can, thus, produce heavy dew or fog.
Integrated Concepts
The boiling point of water increases with depth because pressure increases with depth. At what depth will fresh water have a boiling point of
, if the surface of the water is at sea level?
Integrated Concepts
(a) At what depth in fresh water is the critical pressure of water reached, given that the surface is at sea level? (b) At what temperature will this water boil? (c) Is a significantly higher temperature needed to boil water at a greater depth?
Integrated Concepts
To get an idea of the small effect that temperature has on Archimedes’ principle, calculate the fraction of a copper block’s weight that is supported by the buoyant force in
water and compare this fraction with the fraction supported in
water.
. The buoyant force supports nearly the exact same amount of force on the copper block in both circumstances.
Integrated Concepts
If you want to cook in water at
, you need a pressure cooker that can withstand the necessary pressure. (a) What pressure is required for the boiling point of water to be this high? (b) If the lid of the pressure cooker is a disk 25.0 cm in diameter, what force must it be able to withstand at this pressure?
Unreasonable Results
(a) How many moles per cubic meter of an ideal gas are there at a pressure of
and at
? (b) What is unreasonable about this result? (c) Which premise or assumption is responsible?
(a)
(b) It’s unreasonably large.
(c) At high pressures such as these, the ideal gas law can no longer be applied. As a result, unreasonable answers come up when it is used.
Unreasonable Results
(a) An automobile mechanic claims that an aluminum rod fits loosely into its hole on an aluminum engine block because the engine is hot and the rod is cold. If the hole is 10.0% bigger in diameter than the
rod, at what temperature will the rod be the same size as the hole? (b) What is unreasonable about this temperature? (c) Which premise is responsible?
Unreasonable Results
The temperature inside a supernova explosion is said to be
. (a) What would the average velocity
of hydrogen atoms be? (b) What is unreasonable about this velocity? (c) Which premise or assumption is responsible?
(a)
(b) The velocity is too high—it’s greater than the speed of light.
(c) The assumption that hydrogen inside a supernova behaves as an idea gas is responsible, because of the great temperature and density in the core of a star. Furthermore, when a velocity greater than the speed of light is obtained, classical physics must be replaced by relativity, a subject not yet covered.
Unreasonable Results
Suppose the relative humidity is 80% on a day when the temperature is
. (a) What will the relative humidity be if the air cools to
and the vapor density remains constant? (b) What is unreasonable about this result? (c) Which premise is responsible?
Questions & Answers
I'm interested in biological psychology and cognitive psychology
what does preconceived mean
How can I develope my cognitive domain
why is communication effective
Communication is effective because it allows individuals to share ideas, thoughts, and information with others.
effective communication can lead to improved outcomes in various settings, including personal relationships, business environments, and educational settings. By communicating effectively, individuals can negotiate effectively, solve problems collaboratively, and work towards common goals.
it starts up serve and return practice/assessments.it helps find voice talking therapy also assessments through relaxed conversation.
miss
Every time someone flushes a toilet in the apartment building, the person begins to jumb back automatically after hearing the flush, before the water temperature changes. Identify the types of learning, if it is classical conditioning identify the NS, UCS, CS and CR. If it is operant conditioning, identify the type of consequence positive reinforcement, negative reinforcement or punishment
please i need answer
Wekolamo
because it helps many people around the world to understand how to interact with other people and understand them well, for example at work (job).
Agreed 👍 There are many parts of our brains and behaviors, we really need to get to know. Blessings for everyone and happy Sunday!
ARC
A child is a member of community not society elucidate ?
Isn't practices worldwide, be it psychology, be it science. isn't much just a false belief of control over something the mind cannot truly comprehend?
compare and contrast skinner's perspective on personality development on freud
Skinner skipped the whole unconscious phenomenon and rather emphasized on classical conditioning
war
explain how nature and nurture affect the development and later the productivity of an individual.
nature is an hereditary factor while nurture is an environmental factor which constitute an individual personality. so if an individual's parent has a deviant behavior and was also brought up in an deviant environment, observation of the behavior and the inborn trait we make the individual deviant.
Samuel
I am taking this course because I am hoping that I could somehow learn more about my chosen field of interest and due to the fact that being a PsyD really ignites my passion as an individual the more I hope to learn about developing and literally explore the complexity of my critical thinking skills
and having a good philosophy of the world is like a sandwich and a peanut butter 👍
Jonathan
generally amnesi how long yrs memory loss
interpersonal relationships
What would be the best educational aid(s) for gifted kids/savants?
treat them normal, if they want help then give them.
that will make everyone happy
Saurabh
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Source:
OpenStax, College physics ii. OpenStax CNX. Nov 29, 2012 Download for free at http://legacy.cnx.org/content/col11458/1.2
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